gcleaner | 42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
14-03-2023 18:30

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General

Target

ae3afa452244676d55392d13204a9f67.exe
Size

312KB
MD5

ae3afa452244676d55392d13204a9f67
SHA1

cbfb355b8cb2aad2ddeded588358491083bb2306
SHA256

42e18100bc58d37f07f0c678a2a425dc4c1988f6a86cff80c456301789d58282
SHA512

c6b2b5f5587fa78dba3f500e31e353f2fb28056ce4e031f377f4c4af7d6a9e8a1b548025954ed0c1b181f326003090e459b8c298416c136a3b8ebf3ec1cbc97d
SSDEEP

6144:q6xqXIQqjW59PnLC4NjserDQjwHgb8D7mpjY0GU:1oXIQqjsNnLC4NjXUqm8

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

1184 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

1416 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1416 taskkill.exe

pid	process
1184	cmd.exe

pid	process
1416	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1416	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ae3afa452244676d55392d13204a9f67.execmd.exe

description	pid	process	target process
PID 836 wrote to memory of 1184	836	ae3afa452244676d55392d13204a9f67.exe	cmd.exe
PID 836 wrote to memory of 1184	836	ae3afa452244676d55392d13204a9f67.exe	cmd.exe
PID 836 wrote to memory of 1184	836	ae3afa452244676d55392d13204a9f67.exe	cmd.exe
PID 836 wrote to memory of 1184	836	ae3afa452244676d55392d13204a9f67.exe	cmd.exe
PID 1184 wrote to memory of 1416	1184	cmd.exe	taskkill.exe
PID 1184 wrote to memory of 1416	1184	cmd.exe	taskkill.exe
PID 1184 wrote to memory of 1416	1184	cmd.exe	taskkill.exe
PID 1184 wrote to memory of 1416	1184	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\ae3afa452244676d55392d13204a9f67.exe
"C:\Users\Admin\AppData\Local\Temp\ae3afa452244676d55392d13204a9f67.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "ae3afa452244676d55392d13204a9f67.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ae3afa452244676d55392d13204a9f67.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1184
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "ae3afa452244676d55392d13204a9f67.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1416

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/836-55-0x0000000000400000-0x00000000004CD000-memory.dmp

Filesize
820KB

Download
memory/836-56-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download