gandcrab | 6475fe94cd3449e37620e0e78fe5d5ccd2855defb71626b1f349b4a96a5c4254

General

Target

1.exe
Size

98KB
MD5

e84174bf344419280a719cb7e9c033b5
SHA1

00ec359d33dddad510e47e0cf708aa4702c15977
SHA256

b1a150630cf575d31d0e788e6ca0eca33875aac5b8a9eb873e79731b1956e42b
SHA512

9345c89c1c043209e09423e9921e0276bf1a99cde19e5690d5929b139356b016389b10a34bb286e5dc3771c82bc0386ff23d064a42f219d882420273492bf719

Score

10^/10

gandcrab backdoor ransomware spyware stealer

Malware Config

Extracted

Path

C:\WXWQR-DECRYPT.txt

Family

gandcrab

Ransom Note

---= GANDCRAB V5.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .WXWQR The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/b4ab1dfbf0a34cd4 | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- lAQAABQLojC/9une0v+Vy3CQFikBJEJBplElPJm/H8YGwsQ1YxMjB6YgY5AvDomlByj/3UJCHe+CPqghQ/KWTMIhKtHsq/r3Gp8LiHUjIey9zm7tngWnd6nd/p5PvpHE3eMn7wSs35gVAKrQwT/FKuzOuSi/30j+6VL/t1F3QTODkG14+2EfB4v4fIoYv0MFBzTYArJM/6Lzrg1OB8deeUKsJuhtByycRZxuDt5wZX1viE+h74751SxaTxunmnwXYuy/v+7LjWzqMgn0F/4mGIj7NQMup/sYe5SIy2E9R6CHQHFJ2Rrtl+JQvEcxkp3aVhPY51FsFS9UIUawlvnFZa8/K18SJMVhIFhrVbNPtu9EqBX2sTYefD64KIXs/JuuE+AEj28YubGWMGd9njiET7q4jfqAmFkynwiS3a/yOiS+JUIqYL3otcFmlrw8hfhb6i+SejhxNF2AA9XUGi57mj8XyRajDJkjLqcpwd0dDUN8N6qsKofwmOALHyljdEI/4CAtIK/es/Fm71xIhgB0ToYGI+qqnLHq7bqidejUj4fwAB2e+tzJn1z6DbfFj603IEHS5/+3NZroYF1wv+U6IZ8dmH6xU2WwmIQ+g/ALqLu39cPvgxoYSro06YfC3kMA8tvX7onDc1WvFqLZJ+0nFX2K/XCPpySiGPxzrA3QOH5uyOY8da0w4j46Xnch9OqFQD4+nl86XQhAfbHo+KoWvn3CvpP6FMfsXUpzaMH8d0YovQcTerNIcVuNrkafke/P6dsDisPfJZMOfT7tCD45EIy5Ln9D08MhV7SM+7CRoZ8zmvmvluGcflZIp0L5nnEmeUactCRN2tpcsEKqFlkHDPiJc4wjMEZKyAFetwgmlFViSKkUh3NjnnmV7jfZWZU3xFkJgVGx9AOwVVos80hXsw7Clm3TH04ol02IHx4DlkrdLhLwF3Wmb+9oubs1ScZSwYLgc7Wz/8JNryt+q+1Q5RC8iCl7Ja/2YPNxBoXGUoquqG8OrgFGJTvxoxl55tDBLTDZjSncLs9BApc9IWAlpRBAPgw7GoQWEDMGigsyviiyk587n5R1lHdnuy/Wj/EexjLSnJlNvPsm1CV5xnrK+/c+jRfaH87/ak9Rt/D8SMiLDVIqHWMKp98cmN4mHI9+ec5fVevsz9gQY3jqs59qkHHmejQ8/DNzgwNyo0XnuiYYUKPWDqzg2yZJD+mKUlA0gJcwZOZEDXbyJNOwLEXMf25voJKdf0UfLIJVIX+0aidJiNSBWK62xDzVHziLAcq5W0XhRVjtMkFgLpCv6FYK9/PtSLJ4OfQAGsHFPRlKOQfFR3sXCuaaIfnLCeu0p8bBSY/XMwGH6s3ANh3Vw2ZruzteterLy5TM8Wm4FhyT9Y142f405evg/UkAncEmT5CG5OU3/UlpGycq8hkIopeUISDuI8h+3ppHlfv0Q/QFX2gmxWvILVrWgQMf7xF3gJAmEXf20yT2CiKI+cgOpbIpK/sc2LjMxQxjMK1mhAk2sn1VXGo1RWGgB01JQUzqELEBKLx80aFcYAg10Ml4NOTjinO4vIlHXHCeZXpm7sKYyFNip58PTzCch2T8Qfhc/uOVv69v2PROXtMaLCrXlecGWQsiSqULYAG4afIl+LtKc0jaVhVufE91cDEFEEVXT0wv6EKTZsunOcPfoxja7aJhONKxausKEpcSjOv2NelMerBXtLWNlI/e5vjqVcI2hMF+ciQzZP2ehbNfTLxN+3gPRghOD/N4PKEjzq9rhvE8ErlG1OTWwq8RD/AAr/DWsWrkfpE+fKoQtH1mlhV71PxIivOEmk/uRa1j5LOWt1c4CxvdZvUXgWySW13cQUoXoOGuSGsjR0nERiCW+PUEU/yw/DiInOAkhx25KM8BFEbyMRVrWGM9l443GvY0h1xh+xDOoaTf52g/k2cU7atvJhF+A/nBMSs5qYm8M82isXvdJkGGQZAeKsnDDgAcXP2eoHPSHzw2zXAhBr5+729Dq8GMcKZTff6w5JRgwUdRekT7U9N2iJbHvABKSijV5TVpOKLgxyFvfhlzMx3OilHDO8jfnpptfWhVJx9f1GbCNUwK7++0fw1dm85wdJXTyKeWa9S5jeqxALhS+YVE1fzBkwVsMptaGzRzZJoG0LG4YplFQTssaSZ5WrhJ395viirze1sP7da9vvHq/QnD5lV364d1OrPaOxQRZvmB7p9v3OpAuSRRCTLa5IetvHztqG6CR3GxPuzrI2yGDdk= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---

URLs

http://gandcrabmfe6mnef.onion/b4ab1dfbf0a34cd4

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

1.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\RemoveWrite.tiff => C:\Users\Admin\Pictures\RemoveWrite.tiff.wxwqr	1.exe
File opened for modification	C:\Users\Admin\Pictures\SearchWatch.tiff	1.exe
File renamed	C:\Users\Admin\Pictures\RegisterSkip.png => C:\Users\Admin\Pictures\RegisterSkip.png.wxwqr	1.exe
File renamed	C:\Users\Admin\Pictures\MountRemove.crw => C:\Users\Admin\Pictures\MountRemove.crw.wxwqr	1.exe
File opened for modification	C:\Users\Admin\Pictures\RemoveWrite.tiff	1.exe
File renamed	C:\Users\Admin\Pictures\SearchTrace.raw => C:\Users\Admin\Pictures\SearchTrace.raw.wxwqr	1.exe
File renamed	C:\Users\Admin\Pictures\SearchWatch.tiff => C:\Users\Admin\Pictures\SearchWatch.tiff.wxwqr	1.exe
File renamed	C:\Users\Admin\Pictures\SendConvertTo.tif => C:\Users\Admin\Pictures\SendConvertTo.tif.wxwqr	1.exe
File renamed	C:\Users\Admin\Pictures\MeasureLock.crw => C:\Users\Admin\Pictures\MeasureLock.crw.wxwqr	1.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

1.exe

description	ioc	process
File opened (read-only)	\??\E:	1.exe
File opened (read-only)	\??\I:	1.exe
File opened (read-only)	\??\M:	1.exe
File opened (read-only)	\??\Q:	1.exe
File opened (read-only)	\??\S:	1.exe
File opened (read-only)	\??\Y:	1.exe
File opened (read-only)	\??\A:	1.exe
File opened (read-only)	\??\G:	1.exe
File opened (read-only)	\??\N:	1.exe
File opened (read-only)	\??\T:	1.exe
File opened (read-only)	\??\U:	1.exe
File opened (read-only)	\??\X:	1.exe
File opened (read-only)	\??\B:	1.exe
File opened (read-only)	\??\F:	1.exe
File opened (read-only)	\??\O:	1.exe
File opened (read-only)	\??\V:	1.exe
File opened (read-only)	\??\W:	1.exe
File opened (read-only)	\??\R:	1.exe
File opened (read-only)	\??\Z:	1.exe
File opened (read-only)	\??\H:	1.exe
File opened (read-only)	\??\J:	1.exe
File opened (read-only)	\??\K:	1.exe
File opened (read-only)	\??\L:	1.exe
File opened (read-only)	\??\P:	1.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\bxmeoengtf.bmp"	1.exe

Drops file in Program Files directory 46 IoCs

Processes:

1.exe

description	ioc	process
File opened for modification	C:\Program Files\NewUse.xht	1.exe
File opened for modification	C:\Program Files\ResolveWatch.html	1.exe
File opened for modification	C:\Program Files\EnableRegister.mp4	1.exe
File opened for modification	C:\Program Files\FormatPush.emf	1.exe
File opened for modification	C:\Program Files\ImportMove.html	1.exe
File opened for modification	C:\Program Files\PingClear.xlsm	1.exe
File opened for modification	C:\Program Files\PopSuspend.MTS	1.exe
File opened for modification	C:\Program Files\RequestCopy.scf	1.exe
File opened for modification	C:\Program Files\UpdateRename.dotx	1.exe
File created	C:\Program Files (x86)\f0a34b37f0a34cd520.lock	1.exe
File opened for modification	C:\Program Files\CheckpointPush.avi	1.exe
File opened for modification	C:\Program Files\DisableConnect.txt	1.exe
File opened for modification	C:\Program Files\OpenTrace.i64	1.exe
File opened for modification	C:\Program Files\StepReceive.ps1	1.exe
File opened for modification	C:\Program Files\HideCheckpoint.vssm	1.exe
File opened for modification	C:\Program Files\NewBackup.TTS	1.exe
File opened for modification	C:\Program Files\ReceivePush.tif	1.exe
File opened for modification	C:\Program Files\LimitRedo.aiff	1.exe
File opened for modification	C:\Program Files\SaveMerge.hta	1.exe
File opened for modification	C:\Program Files\UnregisterExport.bmp	1.exe
File created	C:\Program Files (x86)\WXWQR-DECRYPT.txt	1.exe
File opened for modification	C:\Program Files\ClearStart.MTS	1.exe
File opened for modification	C:\Program Files\CompleteStep.mp3	1.exe
File opened for modification	C:\Program Files\DismountHide.potm	1.exe
File opened for modification	C:\Program Files\PopComplete.wpl	1.exe
File opened for modification	C:\Program Files\SwitchLimit.ttc	1.exe
File opened for modification	C:\Program Files\UninstallUse.wps	1.exe
File opened for modification	C:\Program Files\UnprotectSend.vsx	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\f0a34b37f0a34cd520.lock	1.exe
File opened for modification	C:\Program Files\ConvertWait.xls	1.exe
File opened for modification	C:\Program Files\CopyShow.css	1.exe
File opened for modification	C:\Program Files\EditUpdate.au	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\f0a34b37f0a34cd520.lock	1.exe
File opened for modification	C:\Program Files\CompressDisable.potx	1.exe
File opened for modification	C:\Program Files\RemoveConvert.ps1	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\WXWQR-DECRYPT.txt	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\WXWQR-DECRYPT.txt	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\f0a34b37f0a34cd520.lock	1.exe
File created	C:\Program Files\f0a34b37f0a34cd520.lock	1.exe
File opened for modification	C:\Program Files\MountBackup.xlsb	1.exe
File opened for modification	C:\Program Files\UnregisterDebug.dotx	1.exe
File opened for modification	C:\Program Files\ResolveResume.mpeg2	1.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\WXWQR-DECRYPT.txt	1.exe
File created	C:\Program Files\WXWQR-DECRYPT.txt	1.exe
File opened for modification	C:\Program Files\InitializeShow.jpeg	1.exe
File opened for modification	C:\Program Files\ReadEdit.pps	1.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

1.exe

pid process

1672 1.exe
1672 1.exe

pid	process
1672	1.exe
1672	1.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

Processes:

wmic.exevssvc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	944	wmic.exe
Token: SeSecurityPrivilege	944	wmic.exe
Token: SeTakeOwnershipPrivilege	944	wmic.exe
Token: SeLoadDriverPrivilege	944	wmic.exe
Token: SeSystemProfilePrivilege	944	wmic.exe
Token: SeSystemtimePrivilege	944	wmic.exe
Token: SeProfSingleProcessPrivilege	944	wmic.exe
Token: SeIncBasePriorityPrivilege	944	wmic.exe
Token: SeCreatePagefilePrivilege	944	wmic.exe
Token: SeBackupPrivilege	944	wmic.exe
Token: SeRestorePrivilege	944	wmic.exe
Token: SeShutdownPrivilege	944	wmic.exe
Token: SeDebugPrivilege	944	wmic.exe
Token: SeSystemEnvironmentPrivilege	944	wmic.exe
Token: SeRemoteShutdownPrivilege	944	wmic.exe
Token: SeUndockPrivilege	944	wmic.exe
Token: SeManageVolumePrivilege	944	wmic.exe
Token: 33	944	wmic.exe
Token: 34	944	wmic.exe
Token: 35	944	wmic.exe
Token: SeIncreaseQuotaPrivilege	944	wmic.exe
Token: SeSecurityPrivilege	944	wmic.exe
Token: SeTakeOwnershipPrivilege	944	wmic.exe
Token: SeLoadDriverPrivilege	944	wmic.exe
Token: SeSystemProfilePrivilege	944	wmic.exe
Token: SeSystemtimePrivilege	944	wmic.exe
Token: SeProfSingleProcessPrivilege	944	wmic.exe
Token: SeIncBasePriorityPrivilege	944	wmic.exe
Token: SeCreatePagefilePrivilege	944	wmic.exe
Token: SeBackupPrivilege	944	wmic.exe
Token: SeRestorePrivilege	944	wmic.exe
Token: SeShutdownPrivilege	944	wmic.exe
Token: SeDebugPrivilege	944	wmic.exe
Token: SeSystemEnvironmentPrivilege	944	wmic.exe
Token: SeRemoteShutdownPrivilege	944	wmic.exe
Token: SeUndockPrivilege	944	wmic.exe
Token: SeManageVolumePrivilege	944	wmic.exe
Token: 33	944	wmic.exe
Token: 34	944	wmic.exe
Token: 35	944	wmic.exe
Token: SeBackupPrivilege	1760	vssvc.exe
Token: SeRestorePrivilege	1760	vssvc.exe
Token: SeAuditPrivilege	1760	vssvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

1.exe

description	pid	process	target process
PID 1672 wrote to memory of 944	1672	1.exe	wmic.exe
PID 1672 wrote to memory of 944	1672	1.exe	wmic.exe
PID 1672 wrote to memory of 944	1672	1.exe	wmic.exe
PID 1672 wrote to memory of 944	1672	1.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1672