gandcrab | 710b80fc6caba56628f2c4cb6b54a30c57501856853c9531fddc74bc8ff358e9

Analysis

max time kernel
140s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-11-2024 04:12

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General

Target

2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
Size

240KB
MD5

de84fc231d1eaba7459c02795411470b
SHA1

20283f3392fc1f0652132692dd7065410c75ef8a
SHA256

710b80fc6caba56628f2c4cb6b54a30c57501856853c9531fddc74bc8ff358e9
SHA512

86672464a0be44d02a1a3999763220f6c1e34160d8f3d9e48183fceb3795aaefc75ed189d5a71e9124b416c2197ef1bfd9f989b693a824821ac51fa6c114c382
SSDEEP

3072:6YHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHk:6ycqqDL6oREzZpE

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/1916-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral1/memory/1916-4-0x0000000000400000-0x000000000043C000-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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\unikjpcvvqj = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe"	2024-11-05_de84fc231d1eaba7459c02795411470b_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)	\??\X:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\A:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\B:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\G:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\J:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\K:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\N:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\W:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\H:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\L:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\M:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\R:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\V:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\Z:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\E:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\P:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\I:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\O:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\Q:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\S:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\T:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\U:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
File opened (read-only)	\??\Y:	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1916-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral1/memory/1916-4-0x0000000000400000-0x000000000043C000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 15 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	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.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	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	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe

Suspicious use of WriteProcessMemory 56 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2488	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	31
PID 1916 wrote to memory of 2488	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	31
PID 1916 wrote to memory of 2488	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	31
PID 1916 wrote to memory of 2488	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	31
PID 1916 wrote to memory of 2672	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	34
PID 1916 wrote to memory of 2672	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	34
PID 1916 wrote to memory of 2672	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	34
PID 1916 wrote to memory of 2672	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	34
PID 1916 wrote to memory of 2248	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	36
PID 1916 wrote to memory of 2248	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	36
PID 1916 wrote to memory of 2248	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	36
PID 1916 wrote to memory of 2248	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	36
PID 1916 wrote to memory of 2688	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	38
PID 1916 wrote to memory of 2688	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	38
PID 1916 wrote to memory of 2688	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	38
PID 1916 wrote to memory of 2688	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	38
PID 1916 wrote to memory of 2580	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	40
PID 1916 wrote to memory of 2580	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	40
PID 1916 wrote to memory of 2580	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	40
PID 1916 wrote to memory of 2580	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	40
PID 1916 wrote to memory of 2068	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	42
PID 1916 wrote to memory of 2068	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	42
PID 1916 wrote to memory of 2068	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	42
PID 1916 wrote to memory of 2068	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	42
PID 1916 wrote to memory of 1604	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	44
PID 1916 wrote to memory of 1604	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	44
PID 1916 wrote to memory of 1604	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	44
PID 1916 wrote to memory of 1604	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	44
PID 1916 wrote to memory of 1904	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	46
PID 1916 wrote to memory of 1904	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	46
PID 1916 wrote to memory of 1904	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	46
PID 1916 wrote to memory of 1904	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	46
PID 1916 wrote to memory of 1252	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	48
PID 1916 wrote to memory of 1252	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	48
PID 1916 wrote to memory of 1252	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	48
PID 1916 wrote to memory of 1252	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	48
PID 1916 wrote to memory of 1984	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	50
PID 1916 wrote to memory of 1984	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	50
PID 1916 wrote to memory of 1984	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	50
PID 1916 wrote to memory of 1984	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	50
PID 1916 wrote to memory of 2836	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	52
PID 1916 wrote to memory of 2836	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	52
PID 1916 wrote to memory of 2836	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	52
PID 1916 wrote to memory of 2836	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	52
PID 1916 wrote to memory of 3040	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	54
PID 1916 wrote to memory of 3040	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	54
PID 1916 wrote to memory of 3040	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	54
PID 1916 wrote to memory of 3040	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	54
PID 1916 wrote to memory of 2956	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	56
PID 1916 wrote to memory of 2956	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	56
PID 1916 wrote to memory of 2956	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	56
PID 1916 wrote to memory of 2956	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	56
PID 1916 wrote to memory of 892	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	58
PID 1916 wrote to memory of 892	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	58
PID 1916 wrote to memory of 892	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	58
PID 1916 wrote to memory of 892	1916	2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe	58

C:\Users\Admin\AppData\Local\Temp\2024-11-05_de84fc231d1eaba7459c02795411470b_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-05_de84fc231d1eaba7459c02795411470b_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:1916
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2068
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1604
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1904
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1252
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1984
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:892

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/1916-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1916-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download