gandcrab | 104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800

General

Target

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
Size

229KB
MD5

eec0cfe5a8f4cf730b8a67631aa1ac36
SHA1

631ee9945ef3e0e87d48e3b42899499f7bc1853b
SHA256

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800
SHA512

fec77cda78f257c36839409fc9d353ec18647a29deee631d939667ad3db0e2cb5fbdd24b76e5dfcd41292a08f5694fecece286e04a8d338582a77853e1b0b01f

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3876-115-0x0000000000AA0000-0x0000000000AB7000-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

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\knmqummoame = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\pxpwnx.exe\""	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

Enumerates connected drives 3 TTPs 24 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

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

description	ioc	process
File opened (read-only)	\??\G:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\I:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\O:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\P:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\E:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\F:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\R:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\S:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\A:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Q:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\T:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\U:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\W:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Z:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\H:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\K:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\L:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\M:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\N:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\V:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\X:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Y:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\B:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\J:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2712 3876 WerFault.exe 104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

pid	pid_target	process	target process
2712	3876	WerFault.exe	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.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

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exeWerFault.exe

pid	process
3876	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
3876	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
3876	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
3876	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe
2712	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2712 WerFault.exe
Token: SeBackupPrivilege 2712 WerFault.exe
Token: SeDebugPrivilege 2712 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2712	WerFault.exe
Token: SeBackupPrivilege	2712	WerFault.exe
Token: SeDebugPrivilege	2712	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
"C:\Users\Admin\AppData\Local\Temp\104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3876 -s 1252
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2712

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/3876-114-0x0000000000400000-0x0000000000A4C000-memory.dmp

Filesize
6.3MB

Download
memory/3876-115-0x0000000000AA0000-0x0000000000AB7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads