gandcrab | 521fd2f9f6dab605a921cb5c20a37fc0a02af858f6730a6141dc415ce3321013

General

Target

2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
Size

145KB
MD5

69579d93758d00aa23570dbdc472e964
SHA1

b849ea8dd3dacc9536e9b1d9bdd2e14c5f5a010a
SHA256

521fd2f9f6dab605a921cb5c20a37fc0a02af858f6730a6141dc415ce3321013
SHA512

fb48ce46ad0c8883c9364f2c3a7860340489c2effc03245c7ac42b70f1b674c5b7186aabc600968d7ecf14ae594d43ab446491f654b34e5a9e04a42792812b04
SSDEEP

3072:TYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:TyOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/3968-0-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral2/memory/3968-4-0x0000000000400000-0x0000000000428000-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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\uqkfwbnxfgc = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024010669579d93758d00aa23570dbdc472e964gandcrab.exe"	2024010669579d93758d00aa23570dbdc472e964gandcrab.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)	\??\Y:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\Z:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\G:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\L:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\Q:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\W:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\A:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\J:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\T:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\V:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\X:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\H:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\M:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\I:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\K:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\N:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\O:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\P:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\R:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\B:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\E:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\S:	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
File opened (read-only)	\??\U:	2024010669579d93758d00aa23570dbdc472e964gandcrab.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	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 60	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	93
PID 3968 wrote to memory of 60	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	93
PID 3968 wrote to memory of 60	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	93
PID 3968 wrote to memory of 1916	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	102
PID 3968 wrote to memory of 1916	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	102
PID 3968 wrote to memory of 1916	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	102
PID 3968 wrote to memory of 1284	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	107
PID 3968 wrote to memory of 1284	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	107
PID 3968 wrote to memory of 1284	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	107
PID 3968 wrote to memory of 4948	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	110
PID 3968 wrote to memory of 4948	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	110
PID 3968 wrote to memory of 4948	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	110
PID 3968 wrote to memory of 2212	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	113
PID 3968 wrote to memory of 2212	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	113
PID 3968 wrote to memory of 2212	3968	2024010669579d93758d00aa23570dbdc472e964gandcrab.exe	113

C:\Users\Admin\AppData\Local\Temp\2024010669579d93758d00aa23570dbdc472e964gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024010669579d93758d00aa23570dbdc472e964gandcrab.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:60
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1916
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1284
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4948
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2212
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:3732
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:4000
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:4980
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:4628
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:3948
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:208

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

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Downloads

memory/3968-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/3968-4-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads