gandcrab | 4242fe993b770a41554b65ff59ab3faed19a0199a6e62be204e4d1acf7cbb73f

General

Target

23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
Size

265KB
MD5

23b96778e7c06b8f1687ccfc80426ad7
SHA1

79672332771bef28f8ffe1bd429c63ddde581b6d
SHA256

4242fe993b770a41554b65ff59ab3faed19a0199a6e62be204e4d1acf7cbb73f
SHA512

fd26643c834b8286ef5217626435095c0e67c4fc90af6209bb1052381a291a382c929ea1cee4aedbd2518ec3263dd9b5342ae621276c0aedd0b576f504c1e8ea
SSDEEP

3072:uv5tt9cXgoEJk/N77w1ixVJgLzhUkNp2fAhz1WLNoXE1e3GcCFK/ksMRRpwzvjD2:uvSgnk/NgSJqzhUU2fa1WKXIOTzjELE4

Score

10^/10

gandcrab backdoor persistence ransomware

Malware Config

Signatures

GandCrab payload 4 IoCs

resource	yara_rule
behavioral1/memory/3020-55-0x0000000000400000-0x000000000055A000-memory.dmp	family_gandcrab
behavioral1/memory/3020-58-0x0000000000220000-0x0000000000237000-memory.dmp	family_gandcrab
behavioral1/memory/3020-66-0x0000000000400000-0x000000000055A000-memory.dmp	family_gandcrab
behavioral1/memory/3020-68-0x0000000000220000-0x0000000000237000-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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4159544280-4273523227-683900707-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\vxbkbxgeueg = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\smqghj.exe\""	23b96778e7c06b8f1687ccfc80426ad7_mafia_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)	\??\L:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\S:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\T:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\V:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\W:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\X:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\H:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\K:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\M:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\N:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\R:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\U:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\Y:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\B:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\E:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\G:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\I:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\O:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\P:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\A:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\J:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\Q:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
File opened (read-only)	\??\Z:	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2844	3020	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2844	3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe	28
PID 3020 wrote to memory of 2844	3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe	28
PID 3020 wrote to memory of 2844	3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe	28
PID 3020 wrote to memory of 2844	3020	23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe
"C:\Users\Admin\AppData\Local\Temp\23b96778e7c06b8f1687ccfc80426ad7_mafia_JC.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 740
  2⤵
  - Program crash
  PID:2844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3020-56-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3020-55-0x0000000000400000-0x000000000055A000-memory.dmp

Filesize
1.4MB

Download
memory/3020-58-0x0000000000220000-0x0000000000237000-memory.dmp

Filesize
92KB

Download
memory/3020-65-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3020-66-0x0000000000400000-0x000000000055A000-memory.dmp

Filesize
1.4MB

Download
memory/3020-68-0x0000000000220000-0x0000000000237000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads