gandcrab | 78ffd0b0f808c4cec3095a27b6daa133177639d64ec3afd784e10cf89b043d86

Analysis

max time kernel
147s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/02/2024, 02:02

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General

Target

a050d4dd7f6187cb8dab61e0f01aa783.exe
Size

308KB
MD5

a050d4dd7f6187cb8dab61e0f01aa783
SHA1

82fc5c41a36b71c167b837144873ce33874b85ef
SHA256

78ffd0b0f808c4cec3095a27b6daa133177639d64ec3afd784e10cf89b043d86
SHA512

251ac169d2c636407dd1fd45ab8afb8fd9e5f7f7cbe90667349530a151a1004daf78baa8666cc0aeb8a78add1259be22292c21927d96e46986803d1585706bde
SSDEEP

6144:FzL7ShWDLVzVNam6GxI29dqG3KdYAYqTuPZp:7DHNam62ZdKmZmuPH

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

resource	yara_rule
behavioral1/memory/2044-2-0x0000000000400000-0x0000000001400000-memory.dmp	family_gandcrab
behavioral1/memory/2044-4-0x0000000000220000-0x0000000000237000-memory.dmp	family_gandcrab
behavioral1/memory/2044-11-0x0000000000400000-0x0000000001400000-memory.dmp	family_gandcrab
behavioral1/memory/2044-14-0x0000000000220000-0x0000000000237000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor 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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\nskegxxhfqw = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\uyspxv.exe\""	a050d4dd7f6187cb8dab61e0f01aa783.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:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\Z:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\A:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\H:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\J:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\Q:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\U:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\I:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\L:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\O:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\P:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\R:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\T:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\E:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\K:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\N:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\S:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\V:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\W:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\Y:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\B:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\G:	a050d4dd7f6187cb8dab61e0f01aa783.exe
File opened (read-only)	\??\M:	a050d4dd7f6187cb8dab61e0f01aa783.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	a050d4dd7f6187cb8dab61e0f01aa783.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a050d4dd7f6187cb8dab61e0f01aa783.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a050d4dd7f6187cb8dab61e0f01aa783.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2044	a050d4dd7f6187cb8dab61e0f01aa783.exe
2044	a050d4dd7f6187cb8dab61e0f01aa783.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2656	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	28
PID 2044 wrote to memory of 2656	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	28
PID 2044 wrote to memory of 2656	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	28
PID 2044 wrote to memory of 2656	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	28
PID 2044 wrote to memory of 2068	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	30
PID 2044 wrote to memory of 2068	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	30
PID 2044 wrote to memory of 2068	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	30
PID 2044 wrote to memory of 2068	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	30
PID 2044 wrote to memory of 2984	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	32
PID 2044 wrote to memory of 2984	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	32
PID 2044 wrote to memory of 2984	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	32
PID 2044 wrote to memory of 2984	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	32
PID 2044 wrote to memory of 2544	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	34
PID 2044 wrote to memory of 2544	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	34
PID 2044 wrote to memory of 2544	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	34
PID 2044 wrote to memory of 2544	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	34
PID 2044 wrote to memory of 1268	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	36
PID 2044 wrote to memory of 1268	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	36
PID 2044 wrote to memory of 1268	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	36
PID 2044 wrote to memory of 1268	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	36
PID 2044 wrote to memory of 2412	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	38
PID 2044 wrote to memory of 2412	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	38
PID 2044 wrote to memory of 2412	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	38
PID 2044 wrote to memory of 2412	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	38
PID 2044 wrote to memory of 2816	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	42
PID 2044 wrote to memory of 2816	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	42
PID 2044 wrote to memory of 2816	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	42
PID 2044 wrote to memory of 2816	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	42
PID 2044 wrote to memory of 2348	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	44
PID 2044 wrote to memory of 2348	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	44
PID 2044 wrote to memory of 2348	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	44
PID 2044 wrote to memory of 2348	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	44
PID 2044 wrote to memory of 1824	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	46
PID 2044 wrote to memory of 1824	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	46
PID 2044 wrote to memory of 1824	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	46
PID 2044 wrote to memory of 1824	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	46
PID 2044 wrote to memory of 1684	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	48
PID 2044 wrote to memory of 1684	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	48
PID 2044 wrote to memory of 1684	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	48
PID 2044 wrote to memory of 1684	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	48
PID 2044 wrote to memory of 2492	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	50
PID 2044 wrote to memory of 2492	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	50
PID 2044 wrote to memory of 2492	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	50
PID 2044 wrote to memory of 2492	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	50
PID 2044 wrote to memory of 1488	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	52
PID 2044 wrote to memory of 1488	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	52
PID 2044 wrote to memory of 1488	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	52
PID 2044 wrote to memory of 1488	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	52
PID 2044 wrote to memory of 1528	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	54
PID 2044 wrote to memory of 1528	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	54
PID 2044 wrote to memory of 1528	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	54
PID 2044 wrote to memory of 1528	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	54
PID 2044 wrote to memory of 1304	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	56
PID 2044 wrote to memory of 1304	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	56
PID 2044 wrote to memory of 1304	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	56
PID 2044 wrote to memory of 1304	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	56
PID 2044 wrote to memory of 1736	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	58
PID 2044 wrote to memory of 1736	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	58
PID 2044 wrote to memory of 1736	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	58
PID 2044 wrote to memory of 1736	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	58
PID 2044 wrote to memory of 2616	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	60
PID 2044 wrote to memory of 2616	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	60
PID 2044 wrote to memory of 2616	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	60
PID 2044 wrote to memory of 2616	2044	a050d4dd7f6187cb8dab61e0f01aa783.exe	60

C:\Users\Admin\AppData\Local\Temp\a050d4dd7f6187cb8dab61e0f01aa783.exe
"C:\Users\Admin\AppData\Local\Temp\a050d4dd7f6187cb8dab61e0f01aa783.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:2656
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2068
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:2984
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:2544
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:1268
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2412
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:2816
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:2348
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:1824
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1684
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:2492
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:1488
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:1528
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1304
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:1736
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:2616
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:1944
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1788
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:1724
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:1932
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:948
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1028
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:1480
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:2236

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2044-1-0x000000000AA90000-0x000000000AB90000-memory.dmp

Filesize
1024KB

Download
memory/2044-2-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/2044-4-0x0000000000220000-0x0000000000237000-memory.dmp

Filesize
92KB

Download
memory/2044-11-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/2044-13-0x000000000AA90000-0x000000000AB90000-memory.dmp

Filesize
1024KB

Download
memory/2044-14-0x0000000000220000-0x0000000000237000-memory.dmp

Filesize
92KB

Download