gandcrab | e564e87958b3e76bc9bfeb5bed773b7a17f3a82f84872acdbb609aa43a9cd776

General

Target

e564e87958b3e76bc9bfeb5bed773b7a17f3a82f84872acdbb609aa43a9cd776.dll
Size

130KB
MD5

c397591f6b7678fa7c260cad23f97fbc
SHA1

b65fcaf06f0d5f09a731d8106df46a7bd30f9787
SHA256

e564e87958b3e76bc9bfeb5bed773b7a17f3a82f84872acdbb609aa43a9cd776
SHA512

e3d07bc186c1d6ee301ea307fa76e83bea24b60b6d63efc09c6a295424a945668cf0bf61463bb465fbe46f11180249137527eb8cb0af9d45e4af351746f6d07c

Score

10^/10

gandcrab backdoor ransomware

Malware Config

Extracted

Path

C:\VRTESKJRZB-DECRYPT.txt

Ransom Note

---= GANDCRAB V5.0.4 =--- ***********************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: .VRTESKJRZB 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/6401397625c34536 | 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/6401397625c34536

Signatures

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab

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:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\S:	rundll32.exe
File opened (read-only)	\??\V:	rundll32.exe
File opened (read-only)	\??\B:	rundll32.exe
File opened (read-only)	\??\E:	rundll32.exe
File opened (read-only)	\??\G:	rundll32.exe
File opened (read-only)	\??\K:	rundll32.exe
File opened (read-only)	\??\N:	rundll32.exe
File opened (read-only)	\??\R:	rundll32.exe
File opened (read-only)	\??\X:	rundll32.exe
File opened (read-only)	\??\Z:	rundll32.exe
File opened (read-only)	\??\H:	rundll32.exe
File opened (read-only)	\??\L:	rundll32.exe
File opened (read-only)	\??\O:	rundll32.exe
File opened (read-only)	\??\T:	rundll32.exe
File opened (read-only)	\??\Y:	rundll32.exe
File opened (read-only)	\??\F:	rundll32.exe
File opened (read-only)	\??\J:	rundll32.exe
File opened (read-only)	\??\P:	rundll32.exe
File opened (read-only)	\??\Q:	rundll32.exe
File opened (read-only)	\??\A:	rundll32.exe
File opened (read-only)	\??\I:	rundll32.exe
File opened (read-only)	\??\M:	rundll32.exe
File opened (read-only)	\??\U:	rundll32.exe
File opened (read-only)	\??\W:	rundll32.exe

Drops file in Program Files directory 8 IoCs

Processes:

rundll32.exe

description	ioc	process
File opened for modification	C:\Program Files\DisconnectExit.scf	rundll32.exe
File opened for modification	C:\Program Files\DisconnectRequest.xla	rundll32.exe
File opened for modification	C:\Program Files\DismountStop.xlsx	rundll32.exe
File created	C:\Program Files\VRTESKJRZB-DECRYPT.txt	rundll32.exe
File created	C:\Program Files\25c342d525c34531617.lock	rundll32.exe
File opened for modification	C:\Program Files\BackupEnter.mpg	rundll32.exe
File opened for modification	C:\Program Files\CheckpointNew.fon	rundll32.exe
File opened for modification	C:\Program Files\ConvertToDismount.dxf	rundll32.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1980 2852 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1980	2852	WerFault.exe	rundll32.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:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

rundll32.exeWerFault.exe

pid	process
2852	rundll32.exe
2852	rundll32.exe
2852	rundll32.exe
2852	rundll32.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe
1980	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 1980 WerFault.exe
Token: SeBackupPrivilege 1980 WerFault.exe
Token: SeDebugPrivilege 1980 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	1980	WerFault.exe
Token: SeBackupPrivilege	1980	WerFault.exe
Token: SeDebugPrivilege	1980	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 2796 wrote to memory of 2852	2796	rundll32.exe	rundll32.exe
PID 2796 wrote to memory of 2852	2796	rundll32.exe	rundll32.exe
PID 2796 wrote to memory of 2852	2796	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e564e87958b3e76bc9bfeb5bed773b7a17f3a82f84872acdbb609aa43a9cd776.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2796

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e564e87958b3e76bc9bfeb5bed773b7a17f3a82f84872acdbb609aa43a9cd776.dll,#1
2⤵
- Enumerates connected drives
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2852 -s 680
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1980

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads