gandcrab | f49bbdeba68eaa8e6447e7f1c408c73f33c3efd9be9aad2460e9c68e904ddb6c

General

Target

new.exe
Size

953KB
MD5

f26e070282cf6bd0030589da36752124
SHA1

561a9d9d5e3cb1fa60c0486d4c3f5003ab1556eb
SHA256

f49bbdeba68eaa8e6447e7f1c408c73f33c3efd9be9aad2460e9c68e904ddb6c
SHA512

a5f80e3677f398c217666025296c553b031efcdacd9be07d1d74ee86bb72bd570ad64814f2e1f349dfa8b9ff5fff0d71ef56831abb73655e15cff1cc67880d40

Score

10^/10

gandcrab backdoor ransomware suricata

Malware Config

Extracted

Path

C:\UWARZ-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: .UWARZ 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/ca91fd126d654644 | 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/ca91fd126d654644

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1944-132-0x0000000000400000-0x0000000000428000-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 7 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

wermgr.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\StartUnblock.crw => C:\Users\Admin\Pictures\StartUnblock.crw.uwarz	wermgr.exe
File opened for modification	C:\Users\Admin\Pictures\SuspendDisable.tiff	wermgr.exe
File renamed	C:\Users\Admin\Pictures\SuspendDisable.tiff => C:\Users\Admin\Pictures\SuspendDisable.tiff.uwarz	wermgr.exe
File renamed	C:\Users\Admin\Pictures\EditReceive.tif => C:\Users\Admin\Pictures\EditReceive.tif.uwarz	wermgr.exe
File renamed	C:\Users\Admin\Pictures\HideReceive.crw => C:\Users\Admin\Pictures\HideReceive.crw.uwarz	wermgr.exe
File renamed	C:\Users\Admin\Pictures\NewSearch.png => C:\Users\Admin\Pictures\NewSearch.png.uwarz	wermgr.exe
File renamed	C:\Users\Admin\Pictures\ReceiveGet.crw => C:\Users\Admin\Pictures\ReceiveGet.crw.uwarz	wermgr.exe

Drops startup file 2 IoCs

Processes:

wermgr.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\UWARZ-DECRYPT.txt	wermgr.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6d6541a76d654644514.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)	\??\A:	wermgr.exe
File opened (read-only)	\??\B:	wermgr.exe
File opened (read-only)	\??\H:	wermgr.exe
File opened (read-only)	\??\K:	wermgr.exe
File opened (read-only)	\??\M:	wermgr.exe
File opened (read-only)	\??\F:	wermgr.exe
File opened (read-only)	\??\V:	wermgr.exe
File opened (read-only)	\??\W:	wermgr.exe
File opened (read-only)	\??\T:	wermgr.exe
File opened (read-only)	\??\E:	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)	\??\P:	wermgr.exe
File opened (read-only)	\??\R:	wermgr.exe
File opened (read-only)	\??\S:	wermgr.exe
File opened (read-only)	\??\Y:	wermgr.exe
File opened (read-only)	\??\Z:	wermgr.exe
File opened (read-only)	\??\G:	wermgr.exe
File opened (read-only)	\??\J:	wermgr.exe
File opened (read-only)	\??\O:	wermgr.exe
File opened (read-only)	\??\Q:	wermgr.exe
File opened (read-only)	\??\U:	wermgr.exe
File opened (read-only)	\??\X:	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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\\\pidor.bmp"	wermgr.exe

Drops file in Program Files directory 31 IoCs

Processes:

wermgr.exe

description	ioc	process
File opened for modification	C:\Program Files\SyncSubmit.zip	wermgr.exe
File opened for modification	C:\Program Files\TraceSet.pps	wermgr.exe
File opened for modification	C:\Program Files\EnableConvertFrom.dotm	wermgr.exe
File opened for modification	C:\Program Files\EnableRegister.asx	wermgr.exe
File opened for modification	C:\Program Files\OptimizeRestart.pot	wermgr.exe
File opened for modification	C:\Program Files\RemoveGet.3gp2	wermgr.exe
File created	C:\Program Files\UWARZ-DECRYPT.txt	wermgr.exe
File opened for modification	C:\Program Files\UnblockUnprotect.docm	wermgr.exe
File opened for modification	C:\Program Files\LockConvertTo.vstm	wermgr.exe
File opened for modification	C:\Program Files\AssertCompare.jpg	wermgr.exe
File opened for modification	C:\Program Files\ConnectNew.pcx	wermgr.exe
File opened for modification	C:\Program Files\ExitTrace.docm	wermgr.exe
File opened for modification	C:\Program Files\UnregisterLimit.xla	wermgr.exe
File created	C:\Program Files\6d6541a76d654644514.lock	wermgr.exe
File opened for modification	C:\Program Files\ConnectPing.iso	wermgr.exe
File opened for modification	C:\Program Files\GetConvert.vsx	wermgr.exe
File created	C:\Program Files (x86)\6d6541a76d654644514.lock	wermgr.exe
File opened for modification	C:\Program Files\CompleteRegister.m4v	wermgr.exe
File opened for modification	C:\Program Files\OutMove.wps	wermgr.exe
File opened for modification	C:\Program Files\SearchOpen.js	wermgr.exe
File opened for modification	C:\Program Files\UnlockJoin.xps	wermgr.exe
File opened for modification	C:\Program Files\UnregisterRestart.txt	wermgr.exe
File created	C:\Program Files (x86)\UWARZ-DECRYPT.txt	wermgr.exe
File opened for modification	C:\Program Files\InitializeBackup.ps1	wermgr.exe
File opened for modification	C:\Program Files\EditInitialize.ram	wermgr.exe
File opened for modification	C:\Program Files\ImportApprove.gif	wermgr.exe
File opened for modification	C:\Program Files\ImportReset.raw	wermgr.exe
File opened for modification	C:\Program Files\OptimizeRemove.odt	wermgr.exe
File opened for modification	C:\Program Files\RedoRepair.wmf	wermgr.exe
File opened for modification	C:\Program Files\SyncSend.avi	wermgr.exe
File opened for modification	C:\Program Files\CompareCompress.tif	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

1944 wermgr.exe
1944 wermgr.exe
1944 wermgr.exe
1944 wermgr.exe

pid	process
1944	wermgr.exe
1944	wermgr.exe
1944	wermgr.exe
1944	wermgr.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

Processes:

wmic.exevssvc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1836	wmic.exe
Token: SeSecurityPrivilege	1836	wmic.exe
Token: SeTakeOwnershipPrivilege	1836	wmic.exe
Token: SeLoadDriverPrivilege	1836	wmic.exe
Token: SeSystemProfilePrivilege	1836	wmic.exe
Token: SeSystemtimePrivilege	1836	wmic.exe
Token: SeProfSingleProcessPrivilege	1836	wmic.exe
Token: SeIncBasePriorityPrivilege	1836	wmic.exe
Token: SeCreatePagefilePrivilege	1836	wmic.exe
Token: SeBackupPrivilege	1836	wmic.exe
Token: SeRestorePrivilege	1836	wmic.exe
Token: SeShutdownPrivilege	1836	wmic.exe
Token: SeDebugPrivilege	1836	wmic.exe
Token: SeSystemEnvironmentPrivilege	1836	wmic.exe
Token: SeRemoteShutdownPrivilege	1836	wmic.exe
Token: SeUndockPrivilege	1836	wmic.exe
Token: SeManageVolumePrivilege	1836	wmic.exe
Token: 33	1836	wmic.exe
Token: 34	1836	wmic.exe
Token: 35	1836	wmic.exe
Token: 36	1836	wmic.exe
Token: SeIncreaseQuotaPrivilege	1836	wmic.exe
Token: SeSecurityPrivilege	1836	wmic.exe
Token: SeTakeOwnershipPrivilege	1836	wmic.exe
Token: SeLoadDriverPrivilege	1836	wmic.exe
Token: SeSystemProfilePrivilege	1836	wmic.exe
Token: SeSystemtimePrivilege	1836	wmic.exe
Token: SeProfSingleProcessPrivilege	1836	wmic.exe
Token: SeIncBasePriorityPrivilege	1836	wmic.exe
Token: SeCreatePagefilePrivilege	1836	wmic.exe
Token: SeBackupPrivilege	1836	wmic.exe
Token: SeRestorePrivilege	1836	wmic.exe
Token: SeShutdownPrivilege	1836	wmic.exe
Token: SeDebugPrivilege	1836	wmic.exe
Token: SeSystemEnvironmentPrivilege	1836	wmic.exe
Token: SeRemoteShutdownPrivilege	1836	wmic.exe
Token: SeUndockPrivilege	1836	wmic.exe
Token: SeManageVolumePrivilege	1836	wmic.exe
Token: 33	1836	wmic.exe
Token: 34	1836	wmic.exe
Token: 35	1836	wmic.exe
Token: 36	1836	wmic.exe
Token: SeBackupPrivilege	1332	vssvc.exe
Token: SeRestorePrivilege	1332	vssvc.exe
Token: SeAuditPrivilege	1332	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

new.exewermgr.exe

description	pid	process	target process
PID 4896 wrote to memory of 1944	4896	new.exe	wermgr.exe
PID 4896 wrote to memory of 1944	4896	new.exe	wermgr.exe
PID 4896 wrote to memory of 1944	4896	new.exe	wermgr.exe
PID 4896 wrote to memory of 1944	4896	new.exe	wermgr.exe
PID 4896 wrote to memory of 1944	4896	new.exe	wermgr.exe
PID 1944 wrote to memory of 1836	1944	wermgr.exe	wmic.exe
PID 1944 wrote to memory of 1836	1944	wermgr.exe	wmic.exe
PID 1944 wrote to memory of 1836	1944	wermgr.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\new.exe
"C:\Users\Admin\AppData\Local\Temp\new.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4896

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:1944

C:\Windows\SysWOW64\wbem\wmic.exe
"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1836

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1332

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/1836-134-0x0000000000000000-mapping.dmp

Download
memory/1944-131-0x0000000000000000-mapping.dmp

Download
memory/1944-132-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/4896-130-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads