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
behavioral1/memory/336-61-0x0000000000220000-0x0000000000237000-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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ledrltesmbj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\jhxjqa.exe\""	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)	\??\M:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\X:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Z:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\W:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Y:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\G:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\H:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\P:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\T:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\U:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\L:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\N:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\O:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\A:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\B:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\E:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\J:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\K:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\R:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\V:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\F:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\I:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\Q:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
File opened (read-only)	\??\S:	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1192 336 WerFault.exe 104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

pid	pid_target	process	target process
1192	336	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 7 IoCs

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exeWerFault.exe

pid	process
336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe
1192	WerFault.exe
1192	WerFault.exe
1192	WerFault.exe
1192	WerFault.exe
1192	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1192 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1192 WerFault.exe

pid	process
1192	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1192	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe

description	pid	process	target process
PID 336 wrote to memory of 1192	336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe	WerFault.exe
PID 336 wrote to memory of 1192	336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe	WerFault.exe
PID 336 wrote to memory of 1192	336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe	WerFault.exe
PID 336 wrote to memory of 1192	336	104c7975344f4baa614301e3527513a835fee34620f5eaeaee2ee904f8879800.exe	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
- Suspicious use of WriteProcessMemory
PID:336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 336 -s 748
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1192

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/336-59-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

Download
memory/336-60-0x0000000000400000-0x0000000000A4C000-memory.dmp

Filesize
6.3MB

Download
memory/336-61-0x0000000000220000-0x0000000000237000-memory.dmp

Filesize
92KB

Download
memory/1192-62-0x0000000000000000-mapping.dmp

Download
memory/1192-63-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads