gcleaner | 1ef8dd1b6c059bbf50984bc00eeb54c8b2a05db6dd52b560605292da412bd6f9

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
11/02/2023, 09:09

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General

Target
c7321ee88deeede4d5ad70f74feac847.exe
Size 276KB
Sample230211-k4glkada92
SHA256 1ef8dd1b6c059bbf50984bc00eeb54c8b2a05db6dd52b560605292da412bd6f9
MD5 c7321ee88deeede4d5ad70f74feac847
SHA1 e847f216a666d69a4784c23672fc36ecbe003dd3
SHA512 77b92d400f1020e2a30eda2d366ab2568f2ca79f87c6150b0d6c08e14335384db6d2d3bc4941a5308d1c2e8f598781e38357426d4383a1795e3d69553e425a0f
SSDEEP 3072:ohiO4hRL+iGL24qWYh5cK5hBLkUyuDLBLy1dV1RhYVO10Ya4ZGb94v9kAJ59kRYC:ohiDRGLJqf7LtDLEkV4Zw94VkATmYW
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	c7321ee88deeede4d5ad70f74feac847.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 7 IoCs

pid	pid_target	Process	procid_target
4104	4896	WerFault.exe	80
3572	4896	WerFault.exe	80
5020	4896	WerFault.exe	80
4528	4896	WerFault.exe	80
5036	4896	WerFault.exe	80
2128	4896	WerFault.exe	80
3712	4896	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3376	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 1488	4896	c7321ee88deeede4d5ad70f74feac847.exe	93
PID 4896 wrote to memory of 1488	4896	c7321ee88deeede4d5ad70f74feac847.exe	93
PID 4896 wrote to memory of 1488	4896	c7321ee88deeede4d5ad70f74feac847.exe	93
PID 1488 wrote to memory of 3376	1488	cmd.exe	96
PID 1488 wrote to memory of 3376	1488	cmd.exe	96
PID 1488 wrote to memory of 3376	1488	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\c7321ee88deeede4d5ad70f74feac847.exe
"C:\Users\Admin\AppData\Local\Temp\c7321ee88deeede4d5ad70f74feac847.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 728
  2⤵
  - Program crash
  PID:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 780
  2⤵
  - Program crash
  PID:3572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 752
  2⤵
  - Program crash
  PID:5020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 752
  2⤵
  - Program crash
  PID:4528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 752
  2⤵
  - Program crash
  PID:5036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 968
  2⤵
  - Program crash
  PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "c7321ee88deeede4d5ad70f74feac847.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\c7321ee88deeede4d5ad70f74feac847.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1488
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "c7321ee88deeede4d5ad70f74feac847.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 748
  2⤵
  - Program crash
  PID:3712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4896 -ip 4896
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4896 -ip 4896
1⤵
PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4896 -ip 4896
1⤵
PID:2420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4896 -ip 4896
1⤵
PID:8

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 4896 -ip 4896
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4896 -ip 4896
1⤵
PID:32

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 4896 -ip 4896
1⤵
PID:4652

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

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Downloads

memory/4896-133-0x0000000000710000-0x0000000000750000-memory.dmp

Download

memory/4896-132-0x000000000077E000-0x00000000007A5000-memory.dmp

Download

memory/4896-134-0x0000000000400000-0x0000000000576000-memory.dmp

Download

memory/4896-137-0x000000000077E000-0x00000000007A5000-memory.dmp

Download

memory/4896-138-0x0000000000400000-0x0000000000576000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads