gandcrab | 33696c9ae9e42910f5c8cc5ad818c36592ac19fc7d9b1c724b72f8fedff4460f

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 04:34

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General

Target

efb100b1174ae52287b3119bb43a6e50.exe
Size

308KB
MD5

efb100b1174ae52287b3119bb43a6e50
SHA1

ddd88c1fccd2ce77cef76d0b4f95d88bb9862036
SHA256

33696c9ae9e42910f5c8cc5ad818c36592ac19fc7d9b1c724b72f8fedff4460f
SHA512

c92ee49f334570f2ff501f5c60573a9b64a29207bf7d6e1d1297378f2ac00aa39ed22552fcb3464fc8cb0d8164ed4e01d2ade98320c4b6dcb550145f36eafc16
SSDEEP

6144:hzL7ShWDLVzVNam6GxI29dqG3KdYAYqTuPZp:vDHNam62ZdKmZmuPH

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

resource	yara_rule
behavioral1/memory/2848-2-0x0000000000400000-0x0000000001400000-memory.dmp	family_gandcrab
behavioral1/memory/2848-3-0x0000000000260000-0x0000000000277000-memory.dmp	family_gandcrab
behavioral1/memory/2848-10-0x0000000000400000-0x0000000001400000-memory.dmp	family_gandcrab
behavioral1/memory/2848-13-0x0000000000260000-0x0000000000277000-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\ilidvokqqwi = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\fazkzf.exe\""	efb100b1174ae52287b3119bb43a6e50.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)	\??\J:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\P:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\T:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\U:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\Z:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\S:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\X:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\B:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\I:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\K:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\L:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\M:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\O:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\Y:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\G:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\H:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\R:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\W:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\A:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\E:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\N:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\Q:	efb100b1174ae52287b3119bb43a6e50.exe
File opened (read-only)	\??\V:	efb100b1174ae52287b3119bb43a6e50.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	efb100b1174ae52287b3119bb43a6e50.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	efb100b1174ae52287b3119bb43a6e50.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	efb100b1174ae52287b3119bb43a6e50.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2848	efb100b1174ae52287b3119bb43a6e50.exe
2848	efb100b1174ae52287b3119bb43a6e50.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2952	2848	efb100b1174ae52287b3119bb43a6e50.exe	28
PID 2848 wrote to memory of 2952	2848	efb100b1174ae52287b3119bb43a6e50.exe	28
PID 2848 wrote to memory of 2952	2848	efb100b1174ae52287b3119bb43a6e50.exe	28
PID 2848 wrote to memory of 2952	2848	efb100b1174ae52287b3119bb43a6e50.exe	28
PID 2848 wrote to memory of 2548	2848	efb100b1174ae52287b3119bb43a6e50.exe	30
PID 2848 wrote to memory of 2548	2848	efb100b1174ae52287b3119bb43a6e50.exe	30
PID 2848 wrote to memory of 2548	2848	efb100b1174ae52287b3119bb43a6e50.exe	30
PID 2848 wrote to memory of 2548	2848	efb100b1174ae52287b3119bb43a6e50.exe	30
PID 2848 wrote to memory of 2552	2848	efb100b1174ae52287b3119bb43a6e50.exe	32
PID 2848 wrote to memory of 2552	2848	efb100b1174ae52287b3119bb43a6e50.exe	32
PID 2848 wrote to memory of 2552	2848	efb100b1174ae52287b3119bb43a6e50.exe	32
PID 2848 wrote to memory of 2552	2848	efb100b1174ae52287b3119bb43a6e50.exe	32
PID 2848 wrote to memory of 2648	2848	efb100b1174ae52287b3119bb43a6e50.exe	34
PID 2848 wrote to memory of 2648	2848	efb100b1174ae52287b3119bb43a6e50.exe	34
PID 2848 wrote to memory of 2648	2848	efb100b1174ae52287b3119bb43a6e50.exe	34
PID 2848 wrote to memory of 2648	2848	efb100b1174ae52287b3119bb43a6e50.exe	34
PID 2848 wrote to memory of 2664	2848	efb100b1174ae52287b3119bb43a6e50.exe	36
PID 2848 wrote to memory of 2664	2848	efb100b1174ae52287b3119bb43a6e50.exe	36
PID 2848 wrote to memory of 2664	2848	efb100b1174ae52287b3119bb43a6e50.exe	36
PID 2848 wrote to memory of 2664	2848	efb100b1174ae52287b3119bb43a6e50.exe	36
PID 2848 wrote to memory of 2924	2848	efb100b1174ae52287b3119bb43a6e50.exe	40
PID 2848 wrote to memory of 2924	2848	efb100b1174ae52287b3119bb43a6e50.exe	40
PID 2848 wrote to memory of 2924	2848	efb100b1174ae52287b3119bb43a6e50.exe	40
PID 2848 wrote to memory of 2924	2848	efb100b1174ae52287b3119bb43a6e50.exe	40
PID 2848 wrote to memory of 528	2848	efb100b1174ae52287b3119bb43a6e50.exe	42
PID 2848 wrote to memory of 528	2848	efb100b1174ae52287b3119bb43a6e50.exe	42
PID 2848 wrote to memory of 528	2848	efb100b1174ae52287b3119bb43a6e50.exe	42
PID 2848 wrote to memory of 528	2848	efb100b1174ae52287b3119bb43a6e50.exe	42
PID 2848 wrote to memory of 1740	2848	efb100b1174ae52287b3119bb43a6e50.exe	44
PID 2848 wrote to memory of 1740	2848	efb100b1174ae52287b3119bb43a6e50.exe	44
PID 2848 wrote to memory of 1740	2848	efb100b1174ae52287b3119bb43a6e50.exe	44
PID 2848 wrote to memory of 1740	2848	efb100b1174ae52287b3119bb43a6e50.exe	44
PID 2848 wrote to memory of 880	2848	efb100b1174ae52287b3119bb43a6e50.exe	46
PID 2848 wrote to memory of 880	2848	efb100b1174ae52287b3119bb43a6e50.exe	46
PID 2848 wrote to memory of 880	2848	efb100b1174ae52287b3119bb43a6e50.exe	46
PID 2848 wrote to memory of 880	2848	efb100b1174ae52287b3119bb43a6e50.exe	46
PID 2848 wrote to memory of 380	2848	efb100b1174ae52287b3119bb43a6e50.exe	48
PID 2848 wrote to memory of 380	2848	efb100b1174ae52287b3119bb43a6e50.exe	48
PID 2848 wrote to memory of 380	2848	efb100b1174ae52287b3119bb43a6e50.exe	48
PID 2848 wrote to memory of 380	2848	efb100b1174ae52287b3119bb43a6e50.exe	48
PID 2848 wrote to memory of 2748	2848	efb100b1174ae52287b3119bb43a6e50.exe	50
PID 2848 wrote to memory of 2748	2848	efb100b1174ae52287b3119bb43a6e50.exe	50
PID 2848 wrote to memory of 2748	2848	efb100b1174ae52287b3119bb43a6e50.exe	50
PID 2848 wrote to memory of 2748	2848	efb100b1174ae52287b3119bb43a6e50.exe	50
PID 2848 wrote to memory of 860	2848	efb100b1174ae52287b3119bb43a6e50.exe	52
PID 2848 wrote to memory of 860	2848	efb100b1174ae52287b3119bb43a6e50.exe	52
PID 2848 wrote to memory of 860	2848	efb100b1174ae52287b3119bb43a6e50.exe	52
PID 2848 wrote to memory of 860	2848	efb100b1174ae52287b3119bb43a6e50.exe	52
PID 2848 wrote to memory of 940	2848	efb100b1174ae52287b3119bb43a6e50.exe	54
PID 2848 wrote to memory of 940	2848	efb100b1174ae52287b3119bb43a6e50.exe	54
PID 2848 wrote to memory of 940	2848	efb100b1174ae52287b3119bb43a6e50.exe	54
PID 2848 wrote to memory of 940	2848	efb100b1174ae52287b3119bb43a6e50.exe	54
PID 2848 wrote to memory of 2916	2848	efb100b1174ae52287b3119bb43a6e50.exe	56
PID 2848 wrote to memory of 2916	2848	efb100b1174ae52287b3119bb43a6e50.exe	56
PID 2848 wrote to memory of 2916	2848	efb100b1174ae52287b3119bb43a6e50.exe	56
PID 2848 wrote to memory of 2916	2848	efb100b1174ae52287b3119bb43a6e50.exe	56
PID 2848 wrote to memory of 1720	2848	efb100b1174ae52287b3119bb43a6e50.exe	58
PID 2848 wrote to memory of 1720	2848	efb100b1174ae52287b3119bb43a6e50.exe	58
PID 2848 wrote to memory of 1720	2848	efb100b1174ae52287b3119bb43a6e50.exe	58
PID 2848 wrote to memory of 1720	2848	efb100b1174ae52287b3119bb43a6e50.exe	58
PID 2848 wrote to memory of 1464	2848	efb100b1174ae52287b3119bb43a6e50.exe	60
PID 2848 wrote to memory of 1464	2848	efb100b1174ae52287b3119bb43a6e50.exe	60
PID 2848 wrote to memory of 1464	2848	efb100b1174ae52287b3119bb43a6e50.exe	60
PID 2848 wrote to memory of 1464	2848	efb100b1174ae52287b3119bb43a6e50.exe	60

C:\Users\Admin\AppData\Local\Temp\efb100b1174ae52287b3119bb43a6e50.exe
"C:\Users\Admin\AppData\Local\Temp\efb100b1174ae52287b3119bb43a6e50.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:2952
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2548
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:2552
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:2648
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:2664
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2924
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:528
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:1740
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:880
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:380
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:2748
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:860
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:940
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:2916
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:1720
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:1464
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:764
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1924
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns2.wowservers.ru
  2⤵
  PID:1812
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns1.wowservers.ru
  2⤵
  PID:1144
- C:\Windows\SysWOW64\nslookup.exe
  nslookup carder.bit ns1.wowservers.ru
  2⤵
  PID:1964
- C:\Windows\SysWOW64\nslookup.exe
  nslookup ransomware.bit ns2.wowservers.ru
  2⤵
  PID:1120

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/2848-1-0x000000000AB20000-0x000000000AC20000-memory.dmp

Filesize
1024KB

Download
memory/2848-2-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/2848-3-0x0000000000260000-0x0000000000277000-memory.dmp

Filesize
92KB

Download
memory/2848-10-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/2848-12-0x000000000AB20000-0x000000000AC20000-memory.dmp

Filesize
1024KB

Download
memory/2848-13-0x0000000000260000-0x0000000000277000-memory.dmp

Filesize
92KB

Download