Power Worm Ransomware Removal - How to, Technology and PC Security Forum | SensorsTechForum.com
THREAT REMOVAL

Power Worm Ransomware Removal

Power Worm is a Ransomware written in Windows PowerShell. It uses PowerShell for its payload. It encrypts a user’s files on a compromised computer and demands a ransom for decrypting them. Unfortunately, a newer variant of the Ransomware has a bug in its code that cannot produce a valid key for decryption. Since there is only one key used for every victim, that deems all encrypted files unusable.

NamePower Worm Ransomware
TypeRansomware
Short DescriptionThe Ransomware encrypts files with certain extensions and demands payment for their decryption.
SymptomsFiles become inaccessible after encryption; a ransom note is being created for each folder with encrypted files.
Distribution MethodSpam emails, malicious email attachments, compromised websites hosting exploit kits, probably social networks and file sharing services as well.(targeted attacks)
Detection ToolDownload Malware Removal Tool, to See If Your System Has Been Affected by Power Worm Ransomware
User ExperienceJoin our forum to follow the discussion about Power Worm Ransomware.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Power-worm-ransomware-ransom-note-cryptowall-copy-decrypt-instruction-html

Power Worm Ransomware – Distribution

There are a number of ways you could get infected with the Power Worm Ransomware.
The most common distribution method is known to be through malicious email attachments and spam emails. There are even cases, where an email itself also contains malicious code and upon opening the email, the user infects its computer with it, even if he doesn’t open the attachment inside.
Around social networks and file sharing services there could be similar attachments and files containing the Ransomware, disguised as something else.
Another common way of getting infected with the Ransomware is through exploit kits run from legitimate websites. For exploit kits to run, these websites must have been compromise, to have some sort of a security breach.

Power Worm Ransomware – In Detail

The Power Worm Ransomware is classified as a Ransomware. It was first discovered back in 2014 by TrendMicro Researchers. The Ransomware is written in Windows PowerShell and it uses it when executing payloads. It encrypts files on a compromised computer containing an immensely wider array of extensions than previous variants and demands a ransom for decrypting them, afterwards. The known file extensions which the newer variant of the Power Worm Ransomware searches for are:

*.pdf,*.xls,*.docx,*.xlsx,*.mp3,*.waw,*.jpg,*.jpeg,*.txt,*.rtf,*.doc,*.rar,*.zip,*.psd,*.tif,*.wma,*.gif,*.bmp,*.ppt,*.pptx,*.docm,*.xlsm,*.pps,*.ppsx,*.ppd,*.eps,*.png,*.ace,*.djvu,*.tar,*.cdr,*.max,*.wmv,*.avi,*.wav,*.mp4,*.pdd,*.php,*.aac,*.ac3,*.amf,*.amr,*.dwg,*.dxf,*.accdb,*.mod,*.tax2013,*.tax2014,*.oga,*.ogg,*.pbf,*.ra,*.raw,*.saf,*.val,*.wave,*.wow,*.wpk,*.3g2,*.3gp,*.3gp2,*.3mm,*.amx,*.avs,*.bik,*.dir,*.divx,*.dvx,*.evo,*.flv,*.qtq,*.tch,*.rts,*.rum,*.rv,*.scn,*.srt,*.stx,*.svi,*.swf,*.trp,*.vdo,*.wm,*.wmd,*.wmmp,*.wmx,*.wvx,*.xvid,*.3d,*.3d4,*.3df8,*.pbs,*.adi,*.ais,*.amu,*.arr,*.bmc,*.bmf,*.cag,*.cam,*.dng,*.ink,*.jif,*.jiff,*.jpc,*.jpf,*.jpw,*.mag,*.mic,*.mip,*.msp,*.nav,*.ncd,*.odc,*.odi,*.opf,*.qif,*.xwd,*.abw,*.act,*.adt,*.aim,*.ans,*.asc,*.ase,*.bdp,*.bdr,*.bib,*.boc,*.crd,*.diz,*.dot,*.dotm,*.dotx,*.dvi,*.dxe,*.mlx,*.err,*.euc,*.faq,*.fdr,*.fds,*.gthr,*.idx,*.kwd,*.lp2,*.ltr,*.man,*.mbox,*.msg,*.nfo,*.now,*.odm,*.oft,*.pwi,*.rng,*.rtx,*.run,*.ssa,*.text,*.unx,*.wbk,*.wsh,*.7z,*.arc,*.ari,*.arj,*.car,*.cbr,*.cbz,*.gz,*.gzig,*.jgz,*.pak,*.pcv,*.puz,*.r00,*.r01,*.r02,*.r03,*.rev,*.sdn,*.sen,*.sfs,*.sfx,*.sh,*.shar,*.shr,*.sqx,*.tbz2,*.tg,*.tlz,*.vsi,*.wad,*.war,*.xpi,*.z02,*.z04,*.zap,*.zipx,*.zoo,*.ipa,*.isu,*.jar,*.js,*.udf,*.adr,*.ap,*.aro,*.asa,*.ascx,*.ashx,*.asmx,*.asp,*.indd,*.asr,*.qbb,*.bml,*.cer,*.cms,*.crt,*.dap,*.htm,*.moz,*.svr,*.url,*.wdgt,*.abk,*.bic,*.big,*.blp,*.bsp,*.cgf,*.chk,*.col,*.cty,*.dem,*.elf,*.ff,*.gam,*.grf,*.h3m,*.h4r,*.iwd,*.ldb,*.lgp,*.lvl,*.map,*.md3,*.mdl,*.mm6,*.mm7,*.mm8,*.nds,*.pbp,*.ppf,*.pwf,*.pxp,*.sad,*.sav,*.scm,*.scx,*.sdt,*.spr,*.sud,*.uax,*.umx,*.unr,*.uop,*.usa,*.usx,*.ut2,*.ut3,*.utc,*.utx,*.uvx,*.uxx,*.vmf,*.vtf,*.w3g,*.w3x,*.wtd,*.wtf,*.ccd,*.cd,*.cso,*.disk,*.dmg,*.dvd,*.fcd,*.flp,*.img,*.iso,*.isz,*.md0,*.md1,*.md2,*.mdf,*.mds,*.nrg,*.nri,*.vcd,*.vhd,*.snp,*.bkf,*.ade,*.adpb,*.dic,*.cch,*.ctt,*.dal,*.ddc,*.ddcx,*.dex,*.dif,*.dii,*.itdb,*.itl,*.kmz,*.lcd,*.lcf,*.mbx,*.mdn,*.odf,*.odp,*.ods,*.pab,*.pkb,*.pkh,*.pot,*.potx,*.pptm,*.psa,*.qdf,*.qel,*.rgn,*.rrt,*.rsw,*.rte,*.sdb,*.sdc,*.sds,*.sql,*.stt,*.t01,*.t03,*.t05,*.tcx,*.thmx,*.txd,*.txf,*.upoi,*.vmt,*.wks,*.wmdb,*.xl,*.xlc,*.xlr,*.xlsb,*.xltx,*.ltm,*.xlwx,*.mcd,*.cap,*.cc,*.cod,*.cp,*.cpp,*.cs,*.csi,*.dcp,*.dcu,*.dev,*.dob,*.dox,*.dpk,*.dpl,*.dpr,*.dsk,*.dsp,*.eql,*.ex,*.f90,*.fla,*.for,*.fpp,*.jav,*.java,*.lbi,*.owl,*.pl,*.plc,*.pli,*.pm,*.res,*.rsrc,*.so,*.swd,*.tpu,*.tpx,*.tu,*.tur,*.vc,*.yab,*.8ba,*.8bc,*.8be,*.8bf,*.8bi8,*.bi8,*.8bl,*.8bs,*.8bx,*.8by,*.8li,*.aip,*.amxx,*.ape,*.api,*.mxp,*.oxt,*.qpx,*.qtr,*.xla,*.xlam,*.xll,*.xlv,*.xpt,*.cfg,*.cwf,*.dbb,*.slt,*.bp2,*.bp3,*.bpl,*.clr,*.dbx,*.jc,*.potm,*.ppsm,*.prc,*.prt,*.shw,*.std,*.ver,*.wpl,*.xlm,*.yps,*.md3,*.1cd

After files with any of the above extensions are found and encrypted, the Ransomware creates a DESCRYPTION_INSTRUCTION.html file for each folder with files. That ransom note instruction file is a copy of the Cryptowall one with a slight addition in the end, stating that the more time goes by, the bigger the ransom will get. The problem is that the AES algorithm encryption key used for locking the files has a programming error, which makes the files unrecoverable.
The user ID for every victim is always “qDgx5Bs8H”, which means that this variant of the Power Worm Ransomware was implemented to use only one, single static AES key under PowerShell. The biggest problem arises from the fact that this AES key is improperly padded (generating a NULL or empty value where it shouldn’t), which generates random keys instead of a static one. The author had not put into the malware’s code for random keys to be stored, thus the Ransomware is throwing away the decryption key, after encryption.
It gets even worse. The Ransomware initiates a PowerShell 54 line script that has the aim to delete your shadow volume copies so that you are unable to use them to restore your files that way.
The payment sites used in the ransom note are the following: lgemfolpt5ntjaot.onion.nu or lgemfolpt5ntjaot.onion. Ignore paying the ransom, as it will only get you a broken key in return for your money.
Power-worm-ransomware-payment-site
This proves that the Power Worm Ransomware is very dangerous and will deem your files utterly unusable after encryption – you should remove it immediately!

Remove Power Worm Ransomware Completely

To completely get rid of the Power Worm Ransomware from your computer, carefully follow the step-by-step removal instructions provided down below! There are no known ways to recover your encrypted files other than having backups on an external device or cloud somewhere.

1. Boot Your PC In Safe Mode to isolate and remove Power Worm Ransomware

1. Boot Your PC Into Safe Mode

1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

donload_now_140

For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

donload_now_140

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

donload_now_140

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Step 1: Open the Start Menu

donload_now_140

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

donload_now_140

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

donload_now_140

Step 5: After the Advanced Options menu appears, click on Startup Settings.

donload_now_140

Step 6: Click on Restart.
donload_now_140

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

2. Remove Power Worm Ransomware with SpyHunter Anti-Malware Tool

2. Remove Power Worm Ransomware with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove Power Worm Ransomware.2. Scan with SpyHunter to Detect and Remove Power Worm Ransomware.
Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

donload_now_140
It is highly recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter.

Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to automatically update.

pets-by-myway-ads-virus

Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.
pets-by-myway-ads-virus
Step2: After SpyHunter has finished scanning your PC for any Power Worm Ransomware files, click on the ‘Fix Threats’ button to remove them automatically and permanently.
pets-by-myway-ads-virus
Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

3. Remove Power Worm Ransomware with Malwarebytes Anti-Malware.

3. Remove Power Worm Ransomware with Malwarebytes Anti-Malware

1. Install Malwarebytes Anti-Malware to scan for and remove Power Worm Ransomware. 2. Scan your PC with MalwareBytes to remove all Power Worm Ransomware associated files automatically.
Step 1: Download Malwarebytes by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.
pets-by-myway-ads-virus
pets-by-myway-ads-virus
Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.
pets-by-myway-ads-virus
Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.
pets-by-myway-ads-virus
Step 6: Review and click on ‘Next’ on the following 4 steps that will appear afterwards and after that click on the ‘Install’ button.
pets-by-myway-ads-virus
Step 7: After the installation process has completed click on the ‘Finish’ button and check the ‘Launch MalwareBytes AntiMalware’ check box.
Step 1: Launch MalwareBytes if you havent launched it after install.
Step 2: Wait for the software to update and then click on the blue ‘Scan Now’ button. If it doesnt start updating automatically, click on the blue ‘Update Now’ highlighted text.
pets-by-myway-ads-virus

Step 3: At this point, after clicking the ‘Scan Now’ button, the system should start scanning your PC. It may take a while but be patient – it is worth it.
pets-by-myway-ads-virus
Step 4: After the scan has been complete and all of the threats have been identified, click on the ‘Remove Selected’ button to detelete them permanently.
pets-by-myway-ads-virus
Step 5: Once the scan has completed, MalwareBytes will prompt you to restart your computer. It is recommended to save all your data you are working on before restarting.

4. Remove Power Worm Ransomware with STOPZilla AntiMalware

4. Remove Power Worm Ransomware with STOPZilla AntiMalware

1. Install STOPZilla Anti Malware to scan for and remove Power Worm Ransomware. 2. Scan your PC with STOPZilla Anti Malware to remove all Power Worm Ransomware associated files completely.
Step 1: Download STOPZilla by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.
pets-by-myway-ads-virus
Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.
pets-by-myway-ads-virus
Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.
pets-by-myway-ads-virus
Step 6: Review and click on the ‘Install’ button.
pets-by-myway-ads-virus
Step 7: After the installation process has completed click on the ‘Finish’ button.
Step 1: Launch STOPZilla if you havent launched it after install.
Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.
pets-by-myway-ads-virus
Step 3: After the removal of all threats and associated objects, you should Restart your PC.

5. Back up your data to secure it against infections and file encryptions by Power Worm Ransomware in the future

5. Back up your data to secure it against attacks in the future

Security engineers recommend that you back up your files immediately, preferably on an external memory carrier in order to be able to restore them. In order to protect yourself from Power Worm Ransomware (For Windows Users) please follow these simple steps:

1. For Windows 7 and earlier 1. For Windows 8, 8.1 and 10 1. Enabling the Windows Defense Feature (Previous Versions)

1-Click on Windows Start Menu
backup-1
2-Type Backup And Restore
3-Open it and click on Set Up Backup
w7-backup3
4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.
backup-3
5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.
backup-4
6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by Power Worm Ransomware.
backup-5

1-Press Windows button + R
filehistory-1
2-In the window type ‘filehistory’ and press Enter
filehistory-2
3-A File History window will appear. Click on ‘Configure file history settings’
filehistory-3
4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.
filehistory-4
5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from Power Worm Ransomware.

1- Press Windows button + R keys.
sysdm
2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.
windows-defense2
3- A System Properties windows should appear. In it choose System Protection.
windows-defense3
5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
6- Click on Ok and you should see an indication in Protection settings that the protection from Power Worm Ransomware is on.
windows-defense1
Restoring a file via Windows Defense feature:
1-Right-click on the encrypted file, then choose Properties.
file-restore1
2-Click on the Previous Versions tab and then mark the last version of the file.
file-restore2
3-Click on Apply and Ok and the file encrypted by Power Worm Ransomware should be restored.

NOTE! Substantial notification about the Power Worm Ransomware threat: Manual removal of Power Worm Ransomware requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.
Avatar

Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

More Posts

Leave a Comment

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload CAPTCHA.

Share on Facebook Share
Loading...
Share on Twitter Tweet
Loading...
Share on Google Plus Share
Loading...
Share on Linkedin Share
Loading...
Share on Digg Share
Share on Reddit Share
Loading...
Share on Stumbleupon Share
Loading...