gcleaner | f5fc81b7f341f813d8ed29f293c0d65cc266f3d6ddec7db58b06115993bb642c

Analysis

max time kernel
30s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
11-03-2023 15:48

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General

Target

8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe
Size

273KB
MD5

bfe0a34bb6494a9b1e866efe97ccd11b
SHA1

2222524e5bf603c3166ed445ae5f94f2ebe1fc6e
SHA256

8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5
SHA512

9520cace14670c5aff3fcad7476c231d04b4a8b152f0af12cabbcc1a4947ca9007a2a65e3cf010e9a6dfd0f2388cc58def7d8e28338c3f516c0733613e28111c
SSDEEP

6144:5qgB6W89GHqzCzKDJUF3sIcqZi5WZbvEeTqa48Hd/:5qgB6bGHqzCGUF3niUHz485

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

1772 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

1124 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1124 taskkill.exe

pid	process
1772	cmd.exe

pid	process
1124	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1124	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.execmd.exe

description	pid	process	target process
PID 1268 wrote to memory of 1772	1268	8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe	cmd.exe
PID 1268 wrote to memory of 1772	1268	8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe	cmd.exe
PID 1268 wrote to memory of 1772	1268	8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe	cmd.exe
PID 1268 wrote to memory of 1772	1268	8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe	cmd.exe
PID 1772 wrote to memory of 1124	1772	cmd.exe	taskkill.exe
PID 1772 wrote to memory of 1124	1772	cmd.exe	taskkill.exe
PID 1772 wrote to memory of 1124	1772	cmd.exe	taskkill.exe
PID 1772 wrote to memory of 1124	1772	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe
"C:\Users\Admin\AppData\Local\Temp\8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8a2ed465f876e200314451371c46e38ddb7dae622efe7f60bb7d58d9291651d5.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1124

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/1268-55-0x0000000000230000-0x0000000000270000-memory.dmp

Filesize
256KB

Download
memory/1268-56-0x0000000000400000-0x0000000000588000-memory.dmp

Filesize
1.5MB

Download
memory/1268-58-0x0000000000400000-0x0000000000588000-memory.dmp

Filesize
1.5MB

Download