gandcrab | d889f1d81aa532c50ffd59364ab071c87828d177261c244dfd27e8dc5387bbeb

Analysis

max time kernel
191s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/01/2024, 06:00

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General

Target

2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
Size

145KB
MD5

6725fdfde60deb8f808f4529d93cfd15
SHA1

630e892b5595182bae426941e1ae5cd2de794bf4
SHA256

d889f1d81aa532c50ffd59364ab071c87828d177261c244dfd27e8dc5387bbeb
SHA512

2da256f6afcf64f1472793eb296efe68a9ad51f651b0ddfa3076541d09a3993b2c22eeecb4e8a72494d93b08d376cb8f43424e9dfc01376bd1bfc52ec1de33db
SSDEEP

3072:xYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:xyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/3000-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/3000-4-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\kegfbonfvpq = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe"	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe

Enumerates connected drives 3 TTPs 23 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

description	ioc	Process
File opened (read-only)	\??\A:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\B:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\H:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\I:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\N:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\O:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\T:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\Y:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\G:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\Q:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\R:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\S:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\V:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\E:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\K:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\P:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\W:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\J:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\L:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\M:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\U:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\X:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
File opened (read-only)	\??\Z:	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 4304	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	94
PID 3000 wrote to memory of 4304	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	94
PID 3000 wrote to memory of 4304	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	94
PID 3000 wrote to memory of 2924	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	100
PID 3000 wrote to memory of 2924	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	100
PID 3000 wrote to memory of 2924	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	100
PID 3000 wrote to memory of 892	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	106
PID 3000 wrote to memory of 892	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	106
PID 3000 wrote to memory of 892	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	106
PID 3000 wrote to memory of 1636	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	110
PID 3000 wrote to memory of 1636	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	110
PID 3000 wrote to memory of 1636	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	110
PID 3000 wrote to memory of 1836	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	113
PID 3000 wrote to memory of 1836	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	113
PID 3000 wrote to memory of 1836	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	113
PID 3000 wrote to memory of 2644	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	115
PID 3000 wrote to memory of 2644	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	115
PID 3000 wrote to memory of 2644	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	115
PID 3000 wrote to memory of 1468	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	118
PID 3000 wrote to memory of 1468	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	118
PID 3000 wrote to memory of 1468	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	118
PID 3000 wrote to memory of 4792	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	123
PID 3000 wrote to memory of 4792	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	123
PID 3000 wrote to memory of 4792	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	123
PID 3000 wrote to memory of 3240	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	125
PID 3000 wrote to memory of 3240	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	125
PID 3000 wrote to memory of 3240	3000	2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe	125

C:\Users\Admin\AppData\Local\Temp\2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-11_6725fdfde60deb8f808f4529d93cfd15_gandcrab.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4304
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2924
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:892
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1636
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1836
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2644
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1468
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4792
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3000-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3000-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download