gandcrab | 551e21ea7d93932c6bb34708eb48e1b522e8821f68a82c39e4a0bfe5138e262a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-11-2024 05:53

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General

Target

2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
Size

240KB
MD5

e4c308b6c38e04bbdb790e9b38f3ec04
SHA1

14ca875fe11cd848d7c93226bf58fb135f733295
SHA256

551e21ea7d93932c6bb34708eb48e1b522e8821f68a82c39e4a0bfe5138e262a
SHA512

f091b8022a23ef21e251386dab4dbaab681eb567f9dd862460419b58dfd935146173ee2c934aa8cf77d6be5837349912d1516e070bf5f4df3c6d27f3ac7ee712
SSDEEP

3072:AYHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHk:AycqqDL6oREzZpE

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/364-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral2/memory/364-4-0x0000000000400000-0x000000000043C000-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\fkkorloaasz = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe"	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_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:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\K:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\L:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\P:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\M:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\O:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\A:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\B:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\J:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\T:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\V:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\W:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\Y:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\E:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\H:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\R:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\Q:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\S:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\U:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\Z:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\G:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\I:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
File opened (read-only)	\??\N:	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/364-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral2/memory/364-4-0x0000000000400000-0x000000000043C000-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	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_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

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	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 4968	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	87
PID 364 wrote to memory of 4968	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	87
PID 364 wrote to memory of 4968	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	87
PID 364 wrote to memory of 3532	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	102
PID 364 wrote to memory of 3532	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	102
PID 364 wrote to memory of 3532	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	102
PID 364 wrote to memory of 5092	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	106
PID 364 wrote to memory of 5092	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	106
PID 364 wrote to memory of 5092	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	106
PID 364 wrote to memory of 1784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	112
PID 364 wrote to memory of 1784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	112
PID 364 wrote to memory of 1784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	112
PID 364 wrote to memory of 1492	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	117
PID 364 wrote to memory of 1492	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	117
PID 364 wrote to memory of 1492	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	117
PID 364 wrote to memory of 4204	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	120
PID 364 wrote to memory of 4204	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	120
PID 364 wrote to memory of 4204	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	120
PID 364 wrote to memory of 2716	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	125
PID 364 wrote to memory of 2716	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	125
PID 364 wrote to memory of 2716	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	125
PID 364 wrote to memory of 4988	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	129
PID 364 wrote to memory of 4988	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	129
PID 364 wrote to memory of 4988	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	129
PID 364 wrote to memory of 2784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	132
PID 364 wrote to memory of 2784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	132
PID 364 wrote to memory of 2784	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	132
PID 364 wrote to memory of 2596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	136
PID 364 wrote to memory of 2596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	136
PID 364 wrote to memory of 2596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	136
PID 364 wrote to memory of 4956	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	140
PID 364 wrote to memory of 4956	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	140
PID 364 wrote to memory of 4956	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	140
PID 364 wrote to memory of 2356	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	144
PID 364 wrote to memory of 2356	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	144
PID 364 wrote to memory of 2356	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	144
PID 364 wrote to memory of 5116	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	148
PID 364 wrote to memory of 5116	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	148
PID 364 wrote to memory of 5116	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	148
PID 364 wrote to memory of 1596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	151
PID 364 wrote to memory of 1596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	151
PID 364 wrote to memory of 1596	364	2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe	151

C:\Users\Admin\AppData\Local\Temp\2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-18_e4c308b6c38e04bbdb790e9b38f3ec04_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:364
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1784
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1492
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4204
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4988
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4956
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5116
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1596

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/364-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/364-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download