gandcrab | 343137b587844a02d11e5ba3557e71604889aefba8182db1942ff05bacd5d317

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
16/07/2023, 08:38

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General

Target

5beaee3f0c4fa6_JC.exe
Size

145KB
MD5

5beaee3f0c4fa66759c7f3b97037024e
SHA1

609970dfb54f623a88dc085e68d6b51c68bd613a
SHA256

343137b587844a02d11e5ba3557e71604889aefba8182db1942ff05bacd5d317
SHA512

72044abce5632d12e1d6de9481111e4ecab400c936e3cf39e1bb89297cc133d2f702c90f8a4e3fcc5f3521226a19b6acafd8596cb9ace04a17fd680e4491c29f
SSDEEP

3072:rYHVHd2NCMqqDL2/mr3IdE8we0Avu5r++ygLIaagvdCjRv9OtN:ryOqqDL64vdGREz

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 2 IoCs

resource	yara_rule
behavioral1/memory/1964-54-0x0000000000400000-0x0000000000428000-memory.dmp	family_gandcrab
behavioral1/memory/1964-58-0x0000000000400000-0x0000000000428000-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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ffzyldngdvg = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5beaee3f0c4fa6_JC.exe"	5beaee3f0c4fa6_JC.exe
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	5beaee3f0c4fa6_JC.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)	\??\O:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\Q:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\U:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\W:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\Y:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\A:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\B:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\G:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\J:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\L:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\P:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\I:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\K:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\R:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\S:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\V:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\X:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\E:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\H:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\M:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\N:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\T:	5beaee3f0c4fa6_JC.exe
File opened (read-only)	\??\Z:	5beaee3f0c4fa6_JC.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\Identifier	5beaee3f0c4fa6_JC.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	5beaee3f0c4fa6_JC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	5beaee3f0c4fa6_JC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1964	5beaee3f0c4fa6_JC.exe
1964	5beaee3f0c4fa6_JC.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 1700	1964	5beaee3f0c4fa6_JC.exe	2
PID 1964 wrote to memory of 1700	1964	5beaee3f0c4fa6_JC.exe	2
PID 1964 wrote to memory of 1700	1964	5beaee3f0c4fa6_JC.exe	2
PID 1964 wrote to memory of 1700	1964	5beaee3f0c4fa6_JC.exe	2
PID 1964 wrote to memory of 540	1964	5beaee3f0c4fa6_JC.exe	31
PID 1964 wrote to memory of 540	1964	5beaee3f0c4fa6_JC.exe	31
PID 1964 wrote to memory of 540	1964	5beaee3f0c4fa6_JC.exe	31
PID 1964 wrote to memory of 540	1964	5beaee3f0c4fa6_JC.exe	31
PID 1964 wrote to memory of 2876	1964	5beaee3f0c4fa6_JC.exe	33
PID 1964 wrote to memory of 2876	1964	5beaee3f0c4fa6_JC.exe	33
PID 1964 wrote to memory of 2876	1964	5beaee3f0c4fa6_JC.exe	33
PID 1964 wrote to memory of 2876	1964	5beaee3f0c4fa6_JC.exe	33
PID 1964 wrote to memory of 2916	1964	5beaee3f0c4fa6_JC.exe	37
PID 1964 wrote to memory of 2916	1964	5beaee3f0c4fa6_JC.exe	37
PID 1964 wrote to memory of 2916	1964	5beaee3f0c4fa6_JC.exe	37
PID 1964 wrote to memory of 2916	1964	5beaee3f0c4fa6_JC.exe	37
PID 1964 wrote to memory of 1920	1964	5beaee3f0c4fa6_JC.exe	39
PID 1964 wrote to memory of 1920	1964	5beaee3f0c4fa6_JC.exe	39
PID 1964 wrote to memory of 1920	1964	5beaee3f0c4fa6_JC.exe	39
PID 1964 wrote to memory of 1920	1964	5beaee3f0c4fa6_JC.exe	39
PID 1964 wrote to memory of 2980	1964	5beaee3f0c4fa6_JC.exe	41
PID 1964 wrote to memory of 2980	1964	5beaee3f0c4fa6_JC.exe	41
PID 1964 wrote to memory of 2980	1964	5beaee3f0c4fa6_JC.exe	41
PID 1964 wrote to memory of 2980	1964	5beaee3f0c4fa6_JC.exe	41
PID 1964 wrote to memory of 564	1964	5beaee3f0c4fa6_JC.exe	43
PID 1964 wrote to memory of 564	1964	5beaee3f0c4fa6_JC.exe	43
PID 1964 wrote to memory of 564	1964	5beaee3f0c4fa6_JC.exe	43
PID 1964 wrote to memory of 564	1964	5beaee3f0c4fa6_JC.exe	43
PID 1964 wrote to memory of 2732	1964	5beaee3f0c4fa6_JC.exe	45
PID 1964 wrote to memory of 2732	1964	5beaee3f0c4fa6_JC.exe	45
PID 1964 wrote to memory of 2732	1964	5beaee3f0c4fa6_JC.exe	45
PID 1964 wrote to memory of 2732	1964	5beaee3f0c4fa6_JC.exe	45
PID 1964 wrote to memory of 2792	1964	5beaee3f0c4fa6_JC.exe	47
PID 1964 wrote to memory of 2792	1964	5beaee3f0c4fa6_JC.exe	47
PID 1964 wrote to memory of 2792	1964	5beaee3f0c4fa6_JC.exe	47
PID 1964 wrote to memory of 2792	1964	5beaee3f0c4fa6_JC.exe	47
PID 1964 wrote to memory of 2496	1964	5beaee3f0c4fa6_JC.exe	49
PID 1964 wrote to memory of 2496	1964	5beaee3f0c4fa6_JC.exe	49
PID 1964 wrote to memory of 2496	1964	5beaee3f0c4fa6_JC.exe	49
PID 1964 wrote to memory of 2496	1964	5beaee3f0c4fa6_JC.exe	49
PID 1964 wrote to memory of 2088	1964	5beaee3f0c4fa6_JC.exe	51
PID 1964 wrote to memory of 2088	1964	5beaee3f0c4fa6_JC.exe	51
PID 1964 wrote to memory of 2088	1964	5beaee3f0c4fa6_JC.exe	51
PID 1964 wrote to memory of 2088	1964	5beaee3f0c4fa6_JC.exe	51
PID 1964 wrote to memory of 2212	1964	5beaee3f0c4fa6_JC.exe	53
PID 1964 wrote to memory of 2212	1964	5beaee3f0c4fa6_JC.exe	53
PID 1964 wrote to memory of 2212	1964	5beaee3f0c4fa6_JC.exe	53
PID 1964 wrote to memory of 2212	1964	5beaee3f0c4fa6_JC.exe	53
PID 1964 wrote to memory of 344	1964	5beaee3f0c4fa6_JC.exe	55
PID 1964 wrote to memory of 344	1964	5beaee3f0c4fa6_JC.exe	55
PID 1964 wrote to memory of 344	1964	5beaee3f0c4fa6_JC.exe	55
PID 1964 wrote to memory of 344	1964	5beaee3f0c4fa6_JC.exe	55
PID 1964 wrote to memory of 1192	1964	5beaee3f0c4fa6_JC.exe	57
PID 1964 wrote to memory of 1192	1964	5beaee3f0c4fa6_JC.exe	57
PID 1964 wrote to memory of 1192	1964	5beaee3f0c4fa6_JC.exe	57
PID 1964 wrote to memory of 1192	1964	5beaee3f0c4fa6_JC.exe	57
PID 1964 wrote to memory of 2284	1964	5beaee3f0c4fa6_JC.exe	59
PID 1964 wrote to memory of 2284	1964	5beaee3f0c4fa6_JC.exe	59
PID 1964 wrote to memory of 2284	1964	5beaee3f0c4fa6_JC.exe	59
PID 1964 wrote to memory of 2284	1964	5beaee3f0c4fa6_JC.exe	59

C:\Windows\SysWOW64\nslookup.exe
nslookup nomoreransom.bit dns1.soprodns.ru
1⤵
PID:1700

C:\Users\Admin\AppData\Local\Temp\5beaee3f0c4fa6_JC.exe
"C:\Users\Admin\AppData\Local\Temp\5beaee3f0c4fa6_JC.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:540
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2876
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2916
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1920
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2980
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:564
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2732
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2792
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:2496
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:2088
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2212
- C:\Windows\SysWOW64\nslookup.exe
  nslookup nomoreransom.bit dns1.soprodns.ru
  2⤵
  PID:344
- C:\Windows\SysWOW64\nslookup.exe
  nslookup emsisoft.bit dns1.soprodns.ru
  2⤵
  PID:1192
- C:\Windows\SysWOW64\nslookup.exe
  nslookup gandcrab.bit dns1.soprodns.ru
  2⤵
  PID:2284

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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/1964-54-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1964-58-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download