gcleaner | 3d7006311346e0a54f609b1ce3a6c3af8ba7499ca3ef8e7495544e4e8726b611

Analysis

max time kernel
29s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-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
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2000 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1804 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1804 taskkill.exe

pid	process
2000	cmd.exe

pid	process
1804	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1804	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.execmd.exe

description	pid	process	target process
PID 1064 wrote to memory of 2000	1064	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	cmd.exe
PID 1064 wrote to memory of 2000	1064	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	cmd.exe
PID 1064 wrote to memory of 2000	1064	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	cmd.exe
PID 1064 wrote to memory of 2000	1064	b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe	cmd.exe
PID 2000 wrote to memory of 1804	2000	cmd.exe	taskkill.exe
PID 2000 wrote to memory of 1804	2000	cmd.exe	taskkill.exe
PID 2000 wrote to memory of 1804	2000	cmd.exe	taskkill.exe
PID 2000 wrote to memory of 1804	2000	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe
"C:\Users\Admin\AppData\Local\Temp\b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1064
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2000
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b4a0890b7b896b28d86af7c066ce54f9a9f51e17fc7e78349a1ceee92114f522.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1064-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1064-56-0x00000000003B0000-0x00000000003F0000-memory.dmp

Filesize
256KB

Download