gandcrab | 21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17/01/2025, 16:14

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General

Target

21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706.exe
Size

240KB
MD5

fb1caeec84e0c4438963ce0fb133278d
SHA1

2884cf44f8241a427a61ab7c54842e78a8b5b609
SHA256

21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706
SHA512

c55e0b640d3601f2b4d897599619796153e7007bdbd64a8455fd035ad787870bf2b8bde68a15dec40a4a24c0be8fc97790d125f9ab56b05ee3001679982ef997
SSDEEP

6144:0haKwdeU7LyrC6pnv445VEXs5kzlu/e7QCsXqB:0hydeUvEpbQsx/eMvqB

Score

10^/10

gandcrab backdoor discovery ransomware

Malware Config

Signatures

GandCrab payload 3 IoCs

resource	yara_rule
behavioral2/memory/4244-258-0x0000000000400000-0x000000000044D000-memory.dmp	family_gandcrab
behavioral2/memory/4244-259-0x00000000021F0000-0x0000000002207000-memory.dmp	family_gandcrab
behavioral2/memory/4244-264-0x0000000000400000-0x000000000042C000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Gandcrab family
gandcrab

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\win.ini	21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2728	4244	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706.exe

C:\Users\Admin\AppData\Local\Temp\21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706.exe
"C:\Users\Admin\AppData\Local\Temp\21bc5877d08935468c28c7361a7c38c40f98ed1782af6ba49e1a916046ae5706.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:4244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4244 -s 460
  2⤵
  - Program crash
  PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4244 -ip 4244
1⤵
PID:1324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\win.ini

Filesize
11KB

MD5
96ddff88ff05b4479c8b56ab3b8e9ba2

SHA1
ec9c9b2f219b6dbdf4049f186cb3aead49ede9c4

SHA256
1868f3df26a07bd7efe335a86ef3cc47c775577f4d1df269b9992a4c8c290f02

SHA512
e9ca074d6103c449489f916885562b8c379edf3c303ba01bf63df730b3cafe45a96e948ee5a4405a6f2d23a579d9c4ef6566cc17996c41560fe166586b29b92a

Download Submit
memory/4244-256-0x00000000001C0000-0x00000000001DB000-memory.dmp

Filesize
108KB

Download
memory/4244-257-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4244-258-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4244-259-0x00000000021F0000-0x0000000002207000-memory.dmp

Filesize
92KB

Download
memory/4244-264-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4244-263-0x00000000001C0000-0x00000000001DB000-memory.dmp

Filesize
108KB

Download