gandcrab | 752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1

General

Target

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
Size

266KB
MD5

09b26c0da2362e0e5524f8c5d0672f91
SHA1

1f514b6a5b2af15e7cd884eabe3283c719481713
SHA256

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1
SHA512

33d1b2f5689dbd59fbe0971d4bc6459e8a3db60dbdef0214bebb9c17ccbb1240f609c7451c2e74213bd7e16eacb7a126817d4386e1e3728a441c34673a404557

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1748-61-0x00000000002E0000-0x00000000002F7000-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:

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\aqnfreouoyy = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\tovgdz.exe\""	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.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:

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

description	ioc	process
File opened (read-only)	\??\R:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\X:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\A:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\B:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\G:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\N:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\P:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\Q:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\F:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\I:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\M:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\O:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\S:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\J:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\K:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\U:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\Z:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\Y:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\E:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\H:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\L:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\T:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\V:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
File opened (read-only)	\??\W:	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

432 1748 WerFault.exe 752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

pid	pid_target	process	target process
432	1748	WerFault.exe	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.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:

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exeWerFault.exe

pid	process
1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
432	WerFault.exe
432	WerFault.exe
432	WerFault.exe
432	WerFault.exe
432	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

432 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 432 WerFault.exe

pid	process
432	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	432	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe

description	pid	process	target process
PID 1748 wrote to memory of 432	1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe	WerFault.exe
PID 1748 wrote to memory of 432	1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe	WerFault.exe
PID 1748 wrote to memory of 432	1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe	WerFault.exe
PID 1748 wrote to memory of 432	1748	752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe
"C:\Users\Admin\AppData\Local\Temp\752e5de93daa2bf8af4166146cb2357b65777173639ae691b7c561fbd5bed2b1.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 760
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:432

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/432-62-0x0000000000000000-mapping.dmp

Download
memory/432-63-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

Filesize
4KB

Download
memory/1748-59-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1748-60-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/1748-61-0x00000000002E0000-0x00000000002F7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads