gandcrab | b71c9f061f5392da0200c52fe6e377e9a4b9204a639b8caf046ac934b54428aa

Analysis

max time kernel
141s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 03:23

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General

Target

2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
Size

120KB
MD5

82dde6a596a956e116baf01b76b3e5a0
SHA1

7d44e994600e6ac15d5dc9cfbd449680369e9b5c
SHA256

b71c9f061f5392da0200c52fe6e377e9a4b9204a639b8caf046ac934b54428aa
SHA512

5aecc55c956f2bf28d27e2f63dbc6d24df8e642270135a29000f458ab62ee56c428811b2b3d2009c094ffc8fc036e1a86d072af92b86298f9f975dc4af4df7d6
SSDEEP

3072:KMSjOnrmBiMqqDL2/mr3IdE8we0Avu5r++ygLIaagvd5oJpbAyBYnOnHkhkPmrpp:KXjOnr6hqqDL64vdDyCOH+Qmrpp

Score

10^/10

gandcrab backdoor discovery persistence ransomware

Malware Config

Extracted

Family

gandcrab

http://gdcbghvjyqy7jclk.onion.top/

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/708-0-0x00000000007D0000-0x00000000007EC000-memory.dmp	family_gandcrab
behavioral2/memory/708-4-0x00000000007D0000-0x00000000007EC000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\bzoyhnnxtwm = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe"	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_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)	\??\J:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\O:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\W:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\Y:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\B:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\I:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\M:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\Q:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\N:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\V:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\X:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\Z:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\A:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\E:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\H:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\L:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\S:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\T:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\U:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\G:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\K:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\P:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
File opened (read-only)	\??\R:	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe

System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.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	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 708 wrote to memory of 2208	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	85
PID 708 wrote to memory of 2208	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	85
PID 708 wrote to memory of 2208	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	85
PID 708 wrote to memory of 4856	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	89
PID 708 wrote to memory of 4856	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	89
PID 708 wrote to memory of 4856	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	89
PID 708 wrote to memory of 2596	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	101
PID 708 wrote to memory of 2596	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	101
PID 708 wrote to memory of 2596	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	101
PID 708 wrote to memory of 2464	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	112
PID 708 wrote to memory of 2464	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	112
PID 708 wrote to memory of 2464	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	112
PID 708 wrote to memory of 1072	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	115
PID 708 wrote to memory of 1072	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	115
PID 708 wrote to memory of 1072	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	115
PID 708 wrote to memory of 4336	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	119
PID 708 wrote to memory of 4336	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	119
PID 708 wrote to memory of 4336	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	119
PID 708 wrote to memory of 5068	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	124
PID 708 wrote to memory of 5068	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	124
PID 708 wrote to memory of 5068	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	124
PID 708 wrote to memory of 3404	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	128
PID 708 wrote to memory of 3404	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	128
PID 708 wrote to memory of 3404	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	128
PID 708 wrote to memory of 5004	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	132
PID 708 wrote to memory of 5004	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	132
PID 708 wrote to memory of 5004	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	132
PID 708 wrote to memory of 2920	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	136
PID 708 wrote to memory of 2920	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	136
PID 708 wrote to memory of 2920	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	136
PID 708 wrote to memory of 4940	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	140
PID 708 wrote to memory of 4940	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	140
PID 708 wrote to memory of 4940	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	140
PID 708 wrote to memory of 4468	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	144
PID 708 wrote to memory of 4468	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	144
PID 708 wrote to memory of 4468	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	144
PID 708 wrote to memory of 436	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	148
PID 708 wrote to memory of 436	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	148
PID 708 wrote to memory of 436	708	2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe	148

C:\Users\Admin\AppData\Local\Temp\2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-04_82dde6a596a956e116baf01b76b3e5a0_gandcrab.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:708
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4336
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5068
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3404
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5004
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4940
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4468
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:436

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/708-0-0x00000000007D0000-0x00000000007EC000-memory.dmp

Filesize
112KB

Download
memory/708-4-0x00000000007D0000-0x00000000007EC000-memory.dmp

Filesize
112KB

Download