gandcrab | 85bfc7d6c7964ed0d472b7850575eea10ae4a7cad0efa371e30dc59b7f1c987e

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2024 05:35

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General

Target

2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
Size

240KB
MD5

dcb9420454150e510f79232323deccc5
SHA1

ccdb5547f871a904c7a960266f37c32dd315be0f
SHA256

85bfc7d6c7964ed0d472b7850575eea10ae4a7cad0efa371e30dc59b7f1c987e
SHA512

833e4cd1698ba93af1ae64695a1e333ce0915328ec9cdad17acf5bd2e8429174c900762dfb948b2d4ed6ac6dba4fb125260812fd0d3e840380a4d44111999143
SSDEEP

3072:XYHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHkc:XycqqDL6oREzZpEc

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/532-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral2/memory/532-4-0x0000000000400000-0x000000000043C000-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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\fknlwnqmjpp = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe"	2024-11-25_dcb9420454150e510f79232323deccc5_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)	\??\P:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\Q:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\R:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\A:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\G:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\I:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\L:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\M:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\Z:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\E:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\H:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\K:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\U:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\W:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\Y:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\J:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\S:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\T:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\V:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\X:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\B:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\N:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
File opened (read-only)	\??\O:	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/532-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral2/memory/532-4-0x0000000000400000-0x000000000043C000-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	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	2024-11-25_dcb9420454150e510f79232323deccc5_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

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	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 1864	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	83
PID 532 wrote to memory of 1864	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	83
PID 532 wrote to memory of 1864	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	83
PID 532 wrote to memory of 4336	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	98
PID 532 wrote to memory of 4336	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	98
PID 532 wrote to memory of 4336	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	98
PID 532 wrote to memory of 1768	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	102
PID 532 wrote to memory of 1768	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	102
PID 532 wrote to memory of 1768	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	102
PID 532 wrote to memory of 1720	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	108
PID 532 wrote to memory of 1720	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	108
PID 532 wrote to memory of 1720	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	108
PID 532 wrote to memory of 1704	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	113
PID 532 wrote to memory of 1704	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	113
PID 532 wrote to memory of 1704	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	113
PID 532 wrote to memory of 2656	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	117
PID 532 wrote to memory of 2656	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	117
PID 532 wrote to memory of 2656	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	117
PID 532 wrote to memory of 3532	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	121
PID 532 wrote to memory of 3532	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	121
PID 532 wrote to memory of 3532	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	121
PID 532 wrote to memory of 1920	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	125
PID 532 wrote to memory of 1920	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	125
PID 532 wrote to memory of 1920	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	125
PID 532 wrote to memory of 4608	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	128
PID 532 wrote to memory of 4608	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	128
PID 532 wrote to memory of 4608	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	128
PID 532 wrote to memory of 3832	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	132
PID 532 wrote to memory of 3832	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	132
PID 532 wrote to memory of 3832	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	132
PID 532 wrote to memory of 3644	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	136
PID 532 wrote to memory of 3644	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	136
PID 532 wrote to memory of 3644	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	136
PID 532 wrote to memory of 460	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	140
PID 532 wrote to memory of 460	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	140
PID 532 wrote to memory of 460	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	140
PID 532 wrote to memory of 972	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	144
PID 532 wrote to memory of 972	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	144
PID 532 wrote to memory of 972	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	144
PID 532 wrote to memory of 4936	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	148
PID 532 wrote to memory of 4936	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	148
PID 532 wrote to memory of 4936	532	2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe	148

C:\Users\Admin\AppData\Local\Temp\2024-11-25_dcb9420454150e510f79232323deccc5_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-25_dcb9420454150e510f79232323deccc5_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:532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1864
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4336
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1768
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1720
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1704
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3832
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3644
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:460
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:972
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4936

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/532-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/532-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download