gcleaner | 3d7006311346e0a54f609b1ce3a6c3af8ba7499ca3ef8e7495544e4e8726b611

Analysis

max time kernel
162s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2023, 11:26

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General

Target

b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe
Size

332KB
MD5

be8060c6a8398acadab32498f98f5556
SHA1

e759f4222f13d900ba19a2c7fc911a9dcd8a0909
SHA256

b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522
SHA512

3f649fb726039bb4ff4ed3186de7141c1b3ad0911f6ea7fefef0fef3f08abefafa70faa870a6b9eafbd5f3ab58dfb45be165ed52f87ede1155fefbab4ae4d6ad
SSDEEP

6144:QVXnCBimgu6LoCECJQv/zox+ePEczZ+mWdZe5+wOC0K:QxCBim4dECy/Ex+enQZXw5n

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
3844	1952	WerFault.exe	84
4812	1952	WerFault.exe	84
3804	1952	WerFault.exe	84
4944	1952	WerFault.exe	84
508	1952	WerFault.exe	84
2852	1952	WerFault.exe	84
4672	1952	WerFault.exe	84
1392	1952	WerFault.exe	84

Kills process with taskkill 1 IoCs

evasion

pid	Process
1784	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 4256	1952	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	104
PID 1952 wrote to memory of 4256	1952	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	104
PID 1952 wrote to memory of 4256	1952	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	104
PID 4256 wrote to memory of 1784	4256	cmd.exe	108
PID 4256 wrote to memory of 1784	4256	cmd.exe	108
PID 4256 wrote to memory of 1784	4256	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe
"C:\Users\Admin\AppData\Local\Temp\b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 748
  2⤵
  - Program crash
  PID:3844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 788
  2⤵
  - Program crash
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 928
  2⤵
  - Program crash
  PID:3804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 936
  2⤵
  - Program crash
  PID:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 784
  2⤵
  - Program crash
  PID:508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 792
  2⤵
  - Program crash
  PID:2852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 972
  2⤵
  - Program crash
  PID:4672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1952 -s 940
  2⤵
  - Program crash
  PID:1392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1952 -ip 1952
1⤵
PID:3960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 1952 -ip 1952
1⤵
PID:2316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1952 -ip 1952
1⤵
PID:3700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1952 -ip 1952
1⤵
PID:3036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1952 -ip 1952
1⤵
PID:924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1952 -ip 1952
1⤵
PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1952 -ip 1952
1⤵
PID:1056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1952 -ip 1952
1⤵
PID:2256

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1952-134-0x0000000000730000-0x0000000000770000-memory.dmp

Filesize
256KB

Download
memory/1952-135-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1952-137-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download