gandcrab | 35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1

Analysis

max time kernel
132s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
26-06-2022 23:23

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General

Target

35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe
Size

294KB
MD5

84714b6adb4f45377a6a8dcd6e678a20
SHA1

d9057c0cdfd576f2ee9e1eb73bc7a121de213687
SHA256

35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1
SHA512

9062aba5fe381e458dc21bbe8437c52b7a05d0cd1f14ccefb41196d23250d52331a9d24a3eb2fade6f49a8cd99fc88ab3c935c7e56d148e943392716c8a1919a

Score

10^/10

gandcrab backdoor ransomware

Malware Config

Signatures

GandCrab Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3116-132-0x0000000000400000-0x0000000005AA4000-memory.dmp	family_gandcrab
behavioral2/memory/3116-135-0x0000000005C00000-0x0000000005C17000-memory.dmp	family_gandcrab
behavioral2/memory/3116-136-0x0000000000400000-0x0000000005AA4000-memory.dmp	family_gandcrab

Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
ransomware backdoor gandcrab
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3292 3116 WerFault.exe 35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe

pid	pid_target	process	target process
3292	3116	WerFault.exe	35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe

description	pid	process	target process
PID 3116 wrote to memory of 5028	3116	35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe	splwow64.exe
PID 3116 wrote to memory of 5028	3116	35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe	splwow64.exe

C:\Users\Admin\AppData\Local\Temp\35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe
"C:\Users\Admin\AppData\Local\Temp\35b0298974f6d451c37a398a000585dab8d7412495af32a1f8b4b16eb30859c1.exe"
1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3116

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:5028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 420
2⤵
- Program crash
PID:3292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3116 -ip 3116
1⤵
PID:5040

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3116-130-0x0000000005C3D000-0x0000000005C56000-memory.dmp

Filesize
100KB

Download
memory/3116-133-0x0000000005C3D000-0x0000000005C56000-memory.dmp

Filesize
100KB

Download
memory/3116-132-0x0000000000400000-0x0000000005AA4000-memory.dmp

Filesize
86.6MB

Download
memory/3116-135-0x0000000005C00000-0x0000000005C17000-memory.dmp

Filesize
92KB

Download
memory/3116-136-0x0000000000400000-0x0000000005AA4000-memory.dmp

Filesize
86.6MB

Download
memory/5028-131-0x0000000000000000-mapping.dmp

Download