gandcrab | f3ce2b35bf57346579d2fa20ca817c7b397c54be214b82289509355f1a6f5095

General

Target

010.exe
Size

425KB
MD5

da1008dbb0ec85a20058b6da3688ed6c
SHA1

c496375ba828aa3bf2c3f7aa4c20ae61d45f23f6
SHA256

f3ce2b35bf57346579d2fa20ca817c7b397c54be214b82289509355f1a6f5095
SHA512

6aefa8305cc67522fe1ab931653458755a8c5cf1feb13ccd17df3dea691b0763b8e5f039219ef810260fa02e1c7dd8fc89759cd1865a655ab6a65613b815a561

Score

10^/10

gandcrab backdoor ransomware suricata

Malware Config

Extracted

Path

C:\GQNQSOXP-DECRYPT.txt

Ransom Note

---= GANDCRAB V5.0.3 =--- ***********************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 WILL BE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .GQNQSOXP 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/2c6e48dc913b332c | 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--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---

URLs

http://gandcrabmfe6mnef.onion/2c6e48dc913b332c

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1780-132-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity
suricata
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 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

wermgr.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\MountAssert.raw => C:\Users\Admin\Pictures\MountAssert.raw.gqnqsoxp	wermgr.exe
File renamed	C:\Users\Admin\Pictures\OpenPop.png => C:\Users\Admin\Pictures\OpenPop.png.gqnqsoxp	wermgr.exe
File opened for modification	C:\Users\Admin\Pictures\CloseEnable.tiff	wermgr.exe
File renamed	C:\Users\Admin\Pictures\CloseEnable.tiff => C:\Users\Admin\Pictures\CloseEnable.tiff.gqnqsoxp	wermgr.exe

Drops startup file 2 IoCs

Processes:

wermgr.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\GQNQSOXP-DECRYPT.txt	wermgr.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\913b34cf913b332d6c.lock	wermgr.exe

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:

wermgr.exe

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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

wermgr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\pidor.bmp"	wermgr.exe

Drops file in Program Files directory 40 IoCs

Processes:

wermgr.exe

description	ioc	process
File opened for modification	C:\Program Files\ConvertRead.doc	wermgr.exe
File opened for modification	C:\Program Files\CopyCompress.ps1	wermgr.exe
File opened for modification	C:\Program Files\EnableClear.ogg	wermgr.exe
File opened for modification	C:\Program Files\RestartPing.emf	wermgr.exe
File created	C:\Program Files (x86)\913b34cf913b332d6c.lock	wermgr.exe
File opened for modification	C:\Program Files\RemoveEnter.odt	wermgr.exe
File opened for modification	C:\Program Files\RestoreUninstall.jpeg	wermgr.exe
File opened for modification	C:\Program Files\SuspendPing.jpg	wermgr.exe
File opened for modification	C:\Program Files\UnregisterMerge.xlsb	wermgr.exe
File opened for modification	C:\Program Files\ExpandUnprotect.rle	wermgr.exe
File opened for modification	C:\Program Files\PopSuspend.sql	wermgr.exe
File opened for modification	C:\Program Files\UnprotectSuspend.tif	wermgr.exe
File opened for modification	C:\Program Files\CompleteFormat.wax	wermgr.exe
File opened for modification	C:\Program Files\InitializeImport.xlsb	wermgr.exe
File opened for modification	C:\Program Files\InvokeImport.WTV	wermgr.exe
File opened for modification	C:\Program Files\JoinCheckpoint.bmp	wermgr.exe
File opened for modification	C:\Program Files\OptimizeConvertTo.AAC	wermgr.exe
File opened for modification	C:\Program Files\RenameGroup.mpg	wermgr.exe
File opened for modification	C:\Program Files\SearchConfirm.xhtml	wermgr.exe
File opened for modification	C:\Program Files\SendReceive.m3u	wermgr.exe
File opened for modification	C:\Program Files\UnprotectResize.edrwx	wermgr.exe
File opened for modification	C:\Program Files\ConvertExport.TTS	wermgr.exe
File opened for modification	C:\Program Files\GrantSelect.kix	wermgr.exe
File opened for modification	C:\Program Files\CheckpointAssert.midi	wermgr.exe
File opened for modification	C:\Program Files\CheckpointSync.vstx	wermgr.exe
File opened for modification	C:\Program Files\CompleteConvertFrom.au	wermgr.exe
File opened for modification	C:\Program Files\RequestLock.ps1xml	wermgr.exe
File opened for modification	C:\Program Files\SendSearch.ttf	wermgr.exe
File opened for modification	C:\Program Files\SplitMerge.mp4	wermgr.exe
File opened for modification	C:\Program Files\NewTest.snd	wermgr.exe
File opened for modification	C:\Program Files\StopResume.vsw	wermgr.exe
File opened for modification	C:\Program Files\WriteStart.rmi	wermgr.exe
File created	C:\Program Files\GQNQSOXP-DECRYPT.txt	wermgr.exe
File created	C:\Program Files\913b34cf913b332d6c.lock	wermgr.exe
File opened for modification	C:\Program Files\CompressUnlock.mp3	wermgr.exe
File opened for modification	C:\Program Files\EnableOptimize.au	wermgr.exe
File opened for modification	C:\Program Files\RedoEdit.shtml	wermgr.exe
File opened for modification	C:\Program Files\RepairInitialize.htm	wermgr.exe
File opened for modification	C:\Program Files\SkipReset.htm	wermgr.exe
File created	C:\Program Files (x86)\GQNQSOXP-DECRYPT.txt	wermgr.exe

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:

wermgr.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

wermgr.exe

pid process

1780 wermgr.exe
1780 wermgr.exe
1780 wermgr.exe
1780 wermgr.exe

pid	process
1780	wermgr.exe
1780	wermgr.exe
1780	wermgr.exe
1780	wermgr.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

Processes:

wmic.exevssvc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1556	wmic.exe
Token: SeSecurityPrivilege	1556	wmic.exe
Token: SeTakeOwnershipPrivilege	1556	wmic.exe
Token: SeLoadDriverPrivilege	1556	wmic.exe
Token: SeSystemProfilePrivilege	1556	wmic.exe
Token: SeSystemtimePrivilege	1556	wmic.exe
Token: SeProfSingleProcessPrivilege	1556	wmic.exe
Token: SeIncBasePriorityPrivilege	1556	wmic.exe
Token: SeCreatePagefilePrivilege	1556	wmic.exe
Token: SeBackupPrivilege	1556	wmic.exe
Token: SeRestorePrivilege	1556	wmic.exe
Token: SeShutdownPrivilege	1556	wmic.exe
Token: SeDebugPrivilege	1556	wmic.exe
Token: SeSystemEnvironmentPrivilege	1556	wmic.exe
Token: SeRemoteShutdownPrivilege	1556	wmic.exe
Token: SeUndockPrivilege	1556	wmic.exe
Token: SeManageVolumePrivilege	1556	wmic.exe
Token: 33	1556	wmic.exe
Token: 34	1556	wmic.exe
Token: 35	1556	wmic.exe
Token: 36	1556	wmic.exe
Token: SeIncreaseQuotaPrivilege	1556	wmic.exe
Token: SeSecurityPrivilege	1556	wmic.exe
Token: SeTakeOwnershipPrivilege	1556	wmic.exe
Token: SeLoadDriverPrivilege	1556	wmic.exe
Token: SeSystemProfilePrivilege	1556	wmic.exe
Token: SeSystemtimePrivilege	1556	wmic.exe
Token: SeProfSingleProcessPrivilege	1556	wmic.exe
Token: SeIncBasePriorityPrivilege	1556	wmic.exe
Token: SeCreatePagefilePrivilege	1556	wmic.exe
Token: SeBackupPrivilege	1556	wmic.exe
Token: SeRestorePrivilege	1556	wmic.exe
Token: SeShutdownPrivilege	1556	wmic.exe
Token: SeDebugPrivilege	1556	wmic.exe
Token: SeSystemEnvironmentPrivilege	1556	wmic.exe
Token: SeRemoteShutdownPrivilege	1556	wmic.exe
Token: SeUndockPrivilege	1556	wmic.exe
Token: SeManageVolumePrivilege	1556	wmic.exe
Token: 33	1556	wmic.exe
Token: 34	1556	wmic.exe
Token: 35	1556	wmic.exe
Token: 36	1556	wmic.exe
Token: SeBackupPrivilege	3140	vssvc.exe
Token: SeRestorePrivilege	3140	vssvc.exe
Token: SeAuditPrivilege	3140	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

010.exewermgr.exe

description	pid	process	target process
PID 4068 wrote to memory of 1780	4068	010.exe	wermgr.exe
PID 4068 wrote to memory of 1780	4068	010.exe	wermgr.exe
PID 4068 wrote to memory of 1780	4068	010.exe	wermgr.exe
PID 4068 wrote to memory of 1780	4068	010.exe	wermgr.exe
PID 4068 wrote to memory of 1780	4068	010.exe	wermgr.exe
PID 1780 wrote to memory of 1556	1780	wermgr.exe	wmic.exe
PID 1780 wrote to memory of 1556	1780	wermgr.exe	wmic.exe
PID 1780 wrote to memory of 1556	1780	wermgr.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\010.exe
"C:\Users\Admin\AppData\Local\Temp\010.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4068

C:\Windows\SysWOW64\wermgr.exe
"C:\Windows\System32\wermgr.exe"
2⤵
- Modifies extensions of user files
- Drops startup file
- 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:1780

C:\Windows\SysWOW64\wbem\wmic.exe
"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1556

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3140

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

1

T1107

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

1

T1490

Defacement

1

T1491

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Downloads

memory/1556-134-0x0000000000000000-mapping.dmp

Download
memory/1780-131-0x0000000000000000-mapping.dmp

Download
memory/1780-132-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4068-130-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads