gandcrab | 99fd5b2f73b2267e950c62a267ba70bd7234779481f5c20af0eb7ec1a2538e8e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 05:01

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General

Target

2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
Size

145KB
MD5

f5bac72d3156ba785bda3f1055cef28c
SHA1

21fcd82e436725f6f5569d86f5d6f461650a3e14
SHA256

99fd5b2f73b2267e950c62a267ba70bd7234779481f5c20af0eb7ec1a2538e8e
SHA512

7bee8413d9b1467384a64289aa97cb6a2f00bcbf6e1454350d2120809fb5af572622d38fa5bd85e56df455c32038a6688fdaf546f8a3a49c5f72c6b69f4708ba
SSDEEP

3072:0YHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:0yOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/532-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/532-4-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab

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

Detects ransomware indicator 2 IoCs

resource	yara_rule
behavioral2/memory/532-0-0x0000000000400000-0x0000000000428000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20
behavioral2/memory/532-4-0x0000000000400000-0x0000000000428000-memory.dmp	SUSP_RANSOMWARE_Indicator_Jul20

Gandcrab Payload 2 IoCs

resource	yara_rule
behavioral2/memory/532-0-0x0000000000400000-0x0000000000428000-memory.dmp	Gandcrab
behavioral2/memory/532-4-0x0000000000400000-0x0000000000428000-memory.dmp	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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ufhbrjywfca = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe"	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_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)	\??\E:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\J:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\O:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\Q:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\T:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\X:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\Z:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\A:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\S:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\V:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\Y:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\G:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\N:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\P:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\R:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\W:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\H:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\I:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\K:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\L:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\M:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\U:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
File opened (read-only)	\??\B:	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_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	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 2688	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	89
PID 532 wrote to memory of 2688	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	89
PID 532 wrote to memory of 2688	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	89
PID 532 wrote to memory of 640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	98
PID 532 wrote to memory of 640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	98
PID 532 wrote to memory of 640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	98
PID 532 wrote to memory of 1636	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	100
PID 532 wrote to memory of 1636	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	100
PID 532 wrote to memory of 1636	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	100
PID 532 wrote to memory of 3448	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	103
PID 532 wrote to memory of 3448	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	103
PID 532 wrote to memory of 3448	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	103
PID 532 wrote to memory of 3944	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	105
PID 532 wrote to memory of 3944	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	105
PID 532 wrote to memory of 3944	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	105
PID 532 wrote to memory of 2932	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	107
PID 532 wrote to memory of 2932	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	107
PID 532 wrote to memory of 2932	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	107
PID 532 wrote to memory of 3504	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	109
PID 532 wrote to memory of 3504	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	109
PID 532 wrote to memory of 3504	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	109
PID 532 wrote to memory of 560	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	111
PID 532 wrote to memory of 560	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	111
PID 532 wrote to memory of 560	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	111
PID 532 wrote to memory of 3900	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	113
PID 532 wrote to memory of 3900	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	113
PID 532 wrote to memory of 3900	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	113
PID 532 wrote to memory of 3892	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	115
PID 532 wrote to memory of 3892	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	115
PID 532 wrote to memory of 3892	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	115
PID 532 wrote to memory of 4868	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	117
PID 532 wrote to memory of 4868	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	117
PID 532 wrote to memory of 4868	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	117
PID 532 wrote to memory of 2640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	119
PID 532 wrote to memory of 2640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	119
PID 532 wrote to memory of 2640	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	119
PID 532 wrote to memory of 4736	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	121
PID 532 wrote to memory of 4736	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	121
PID 532 wrote to memory of 4736	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	121
PID 532 wrote to memory of 1556	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	123
PID 532 wrote to memory of 1556	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	123
PID 532 wrote to memory of 1556	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	123
PID 532 wrote to memory of 4284	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	125
PID 532 wrote to memory of 4284	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	125
PID 532 wrote to memory of 4284	532	2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe	125

C:\Users\Admin\AppData\Local\Temp\2024-03-28_f5bac72d3156ba785bda3f1055cef28c_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_f5bac72d3156ba785bda3f1055cef28c_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:532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2688
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:640
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1636
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3448
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:3944
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2932
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3504
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:560
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3900
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3892
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4868
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2640
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4736
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1556
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:4284

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/532-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/532-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download