gandcrab | f2a762d7894026d08ea8e013ce76a8f7596e0f439cb62589eb182c2df403dd7c

Analysis

max time kernel
149s
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
24-11-2024 01:30

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General

Target

2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
Size

240KB
MD5

509c7a0d9196a91be3607661573897e2
SHA1

7ebe526e781b772b20c33ff2dc88aa057ef4bd19
SHA256

f2a762d7894026d08ea8e013ce76a8f7596e0f439cb62589eb182c2df403dd7c
SHA512

5ba022c821cbacc7bd3782ca71554d8cc922e5502669461e5986bb44cb31d01778d5673bf19d2b5028b5cd3674bbc9ebdfd2a9a89146e63911452a32885b83c5
SSDEEP

3072:lYHVHd2NwMqqDL2/mr3IdE8we0Avu5r++ygLIaa4jRv9OtNZpHk:lycqqDL6oREzZpE

Score

10^/10

gandcrab backdoor discovery persistence ransomware upx

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000400000-0x000000000043C000-memory.dmp	family_gandcrab
behavioral2/memory/5056-4-0x0000000000400000-0x000000000043C000-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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\leqpayyftxj = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe"	2024-11-24_509c7a0d9196a91be3607661573897e2_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:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\A:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\H:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\N:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\O:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\M:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\S:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\V:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\Z:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\B:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\E:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\J:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\K:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\T:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\I:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\L:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\P:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\Q:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\Y:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\G:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\U:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\W:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
File opened (read-only)	\??\X:	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5056-0-0x0000000000400000-0x000000000043C000-memory.dmp	upx
behavioral2/memory/5056-4-0x0000000000400000-0x000000000043C000-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	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nslookup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-24_509c7a0d9196a91be3607661573897e2_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

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	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 2136	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	83
PID 5056 wrote to memory of 2136	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	83
PID 5056 wrote to memory of 2136	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	83
PID 5056 wrote to memory of 4496	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	98
PID 5056 wrote to memory of 4496	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	98
PID 5056 wrote to memory of 4496	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	98
PID 5056 wrote to memory of 1748	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	102
PID 5056 wrote to memory of 1748	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	102
PID 5056 wrote to memory of 1748	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	102
PID 5056 wrote to memory of 4060	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	109
PID 5056 wrote to memory of 4060	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	109
PID 5056 wrote to memory of 4060	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	109
PID 5056 wrote to memory of 3524	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	113
PID 5056 wrote to memory of 3524	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	113
PID 5056 wrote to memory of 3524	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	113
PID 5056 wrote to memory of 428	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	116
PID 5056 wrote to memory of 428	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	116
PID 5056 wrote to memory of 428	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	116
PID 5056 wrote to memory of 5092	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	120
PID 5056 wrote to memory of 5092	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	120
PID 5056 wrote to memory of 5092	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	120
PID 5056 wrote to memory of 364	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	123
PID 5056 wrote to memory of 364	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	123
PID 5056 wrote to memory of 364	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	123
PID 5056 wrote to memory of 1532	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	127
PID 5056 wrote to memory of 1532	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	127
PID 5056 wrote to memory of 1532	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	127
PID 5056 wrote to memory of 3388	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	130
PID 5056 wrote to memory of 3388	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	130
PID 5056 wrote to memory of 3388	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	130
PID 5056 wrote to memory of 1584	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	133
PID 5056 wrote to memory of 1584	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	133
PID 5056 wrote to memory of 1584	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	133
PID 5056 wrote to memory of 5080	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	137
PID 5056 wrote to memory of 5080	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	137
PID 5056 wrote to memory of 5080	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	137
PID 5056 wrote to memory of 5108	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	141
PID 5056 wrote to memory of 5108	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	141
PID 5056 wrote to memory of 5108	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	141
PID 5056 wrote to memory of 648	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	145
PID 5056 wrote to memory of 648	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	145
PID 5056 wrote to memory of 648	5056	2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe	145

C:\Users\Admin\AppData\Local\Temp\2024-11-24_509c7a0d9196a91be3607661573897e2_gandcrab.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-24_509c7a0d9196a91be3607661573897e2_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:5056
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4496
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1748
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3524
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:428
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:364
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1532
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1584
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5080
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5108
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  - System Location Discovery: System Language Discovery
  PID:648

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/5056-0-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/5056-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download