gandcrab | 668cefdb6ae9253a06e176493df130c17385635f49ac2d763830cb6f47cea308

General

Target

2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
Size

145KB
MD5

3f209c2d6f834f0aeab2e79eb7d7e134
SHA1

7b6d4ba05a70e6b93c912019c41cae57a3c27ed6
SHA256

668cefdb6ae9253a06e176493df130c17385635f49ac2d763830cb6f47cea308
SHA512

f3dd5d63809b18ad9923a902b3edab0b6ed2ed40f89f6534ef94dff402b22faa54ae117ed9572f2f04b2941fe8180973f3f1812fbb3e0d5c195a9b2cbb953484
SSDEEP

3072:JYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:JyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/2060-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral1/memory/2060-4-0x0000000000400000-0x0000000000428000-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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\hwucmuoassm = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe"	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_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)	\??\W:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\Z:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\E:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\H:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\J:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\L:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\S:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\V:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\Q:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\R:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\Y:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\A:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\B:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\M:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\O:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\P:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\X:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\G:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\I:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\K:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\N:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\T:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
File opened (read-only)	\??\U:	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2668	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	28
PID 2060 wrote to memory of 2668	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	28
PID 2060 wrote to memory of 2668	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	28
PID 2060 wrote to memory of 2668	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	28
PID 2060 wrote to memory of 2856	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	32
PID 2060 wrote to memory of 2856	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	32
PID 2060 wrote to memory of 2856	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	32
PID 2060 wrote to memory of 2856	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	32
PID 2060 wrote to memory of 2844	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	34
PID 2060 wrote to memory of 2844	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	34
PID 2060 wrote to memory of 2844	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	34
PID 2060 wrote to memory of 2844	2060	2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe	34

C:\Users\Admin\AppData\Local\Temp\2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_3f209c2d6f834f0aeab2e79eb7d7e134_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:2060
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2668
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2856
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2844
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3040
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2916
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1012
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1244
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2448
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2244
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:1824
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:324
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2060-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2060-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads