gandcrab | fa44f130443be60691ddb175a201807e70e640008b56616c48ac7ed844a03077

Analysis

max time kernel
165s
max time network
181s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2024, 05:47

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General

Target

2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
Size

145KB
MD5

a203921d83440a481e10de3df0320ba3
SHA1

36f9ee743d11548fa028d33653a2cae92201cd2e
SHA256

fa44f130443be60691ddb175a201807e70e640008b56616c48ac7ed844a03077
SHA512

3bb3cbd5034ead757ed24815f820ee402e06aa07aab9305698fde3d88eecf84602d3aac5a29b658ab5f083e2f3720b83dedcf9d1327fc99f16df5a8387f772b5
SSDEEP

3072:VYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:VyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/1048-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/1048-4-0x0000000000400000-0x0000000000428000-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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\fupelssjrim = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe"	2024-01-01_a203921d83440a481e10de3df0320ba3_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)	\??\V:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\X:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\A:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\J:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\M:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\T:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\R:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\Z:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\G:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\O:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\P:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\Q:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\S:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\U:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\W:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\Y:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\E:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\I:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\K:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\L:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\B:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\H:	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
File opened (read-only)	\??\N:	2024-01-01_a203921d83440a481e10de3df0320ba3_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\ProcessorNameString	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 2912	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	92
PID 1048 wrote to memory of 2912	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	92
PID 1048 wrote to memory of 2912	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	92
PID 1048 wrote to memory of 4440	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	97
PID 1048 wrote to memory of 4440	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	97
PID 1048 wrote to memory of 4440	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	97
PID 1048 wrote to memory of 5044	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	99
PID 1048 wrote to memory of 5044	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	99
PID 1048 wrote to memory of 5044	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	99
PID 1048 wrote to memory of 2228	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	105
PID 1048 wrote to memory of 2228	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	105
PID 1048 wrote to memory of 2228	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	105
PID 1048 wrote to memory of 216	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	110
PID 1048 wrote to memory of 216	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	110
PID 1048 wrote to memory of 216	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	110
PID 1048 wrote to memory of 3564	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	112
PID 1048 wrote to memory of 3564	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	112
PID 1048 wrote to memory of 3564	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	112
PID 1048 wrote to memory of 3068	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	117
PID 1048 wrote to memory of 3068	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	117
PID 1048 wrote to memory of 3068	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	117
PID 1048 wrote to memory of 780	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	119
PID 1048 wrote to memory of 780	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	119
PID 1048 wrote to memory of 780	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	119
PID 1048 wrote to memory of 3724	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	127
PID 1048 wrote to memory of 3724	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	127
PID 1048 wrote to memory of 3724	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	127
PID 1048 wrote to memory of 460	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	130
PID 1048 wrote to memory of 460	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	130
PID 1048 wrote to memory of 460	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	130
PID 1048 wrote to memory of 5080	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	132
PID 1048 wrote to memory of 5080	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	132
PID 1048 wrote to memory of 5080	1048	2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe	132

C:\Users\Admin\AppData\Local\Temp\2024-01-01_a203921d83440a481e10de3df0320ba3_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_a203921d83440a481e10de3df0320ba3_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:1048
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2912
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4440
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:5044
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2228
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:216
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3564
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3068
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:780
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3724
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:460
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:5080

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/1048-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1048-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download