gandcrab | 76cb6f2c09992d5e11899dcc7e93c5a05c291a5d96a7eae0c1245cdd0c89475f

Analysis

max time kernel
4s
max time network
141s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 05:38

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General

Target

2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
Size

147KB
MD5

1bf3c6fc319daefc2cbd17af4d8288af
SHA1

9590917e021ef1a254a80b1013c9db3cadabbc6d
SHA256

76cb6f2c09992d5e11899dcc7e93c5a05c291a5d96a7eae0c1245cdd0c89475f
SHA512

6a3f6e3121262e4d58264bec362575e8aa4b39c364f920373ee697144f049bb51bffecae46bc103636d980f6ce2f895f0159b7a4310d7e6008ad2aed8a679841
SSDEEP

3072:GBounVyFHFMqqDL2/LgHkc2U6FiPZ8aewZ2ql5f2J9lj:GqxHmqqDL6EHl2U6CbeOl5f2Fj

Score

10^/10

gandcrab backdoor persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/2348-0-0x000000000FC60000-0x000000000FC88000-memory.dmp	family_gandcrab
behavioral1/memory/2348-4-0x000000000FC60000-0x000000000FC88000-memory.dmp	family_gandcrab

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

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2348-0-0x000000000FC60000-0x000000000FC88000-memory.dmp	upx
behavioral1/memory/2348-4-0x000000000FC60000-0x000000000FC88000-memory.dmp	upx

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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\gqucbkqgmnv = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe"	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_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)	\??\R:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\T:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\J:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\K:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\P:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\Q:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\W:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\E:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\G:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\M:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\O:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\V:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\Y:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\H:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\I:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\L:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\U:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\X:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\Z:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\A:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\B:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\N:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
File opened (read-only)	\??\S:	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_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	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1976	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	29
PID 2348 wrote to memory of 1976	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	29
PID 2348 wrote to memory of 1976	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	29
PID 2348 wrote to memory of 1976	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	29
PID 2348 wrote to memory of 2112	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	31
PID 2348 wrote to memory of 2112	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	31
PID 2348 wrote to memory of 2112	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	31
PID 2348 wrote to memory of 2112	2348	2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-01_1bf3c6fc319daefc2cbd17af4d8288af_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:2348
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:1976
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2112
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:2736
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:2752
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:2640
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2644
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:2484
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2836
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:2128
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:320
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:2948
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:1316
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:1552
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2468
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:1172
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:2984
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:2268
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2032
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:2312
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:700
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:288
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:560
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:940
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2288
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:2116
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2044
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:1164
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:764
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:956
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2184
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns1.soprodns.ru
  2⤵
  PID:1744
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2120
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns2.soprodns.ru
  2⤵
  PID:1140
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.coin dns2.soprodns.ru
  2⤵
  PID:1612
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns2.soprodns.ru
  2⤵
  PID:2412
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2720

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/2348-0-0x000000000FC60000-0x000000000FC88000-memory.dmp

Filesize
160KB

Download
memory/2348-4-0x000000000FC60000-0x000000000FC88000-memory.dmp

Filesize
160KB

Download