gcleaner | 343dd59523f02e282a83c336c051e6902d3b5a3c2d5f9de628d7b5fefb61c8ae

Analysis

max time kernel
30s
max time network
32s
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

bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe
Size

273KB
MD5

bd6da92bd52d003123cbc4759dec1002
SHA1

9dafebf9cfdc15cd54c56b767b07b0d7944d1f92
SHA256

bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5
SHA512

9c7867046c173643f150a322a95f830c0a04c2bc50b72925ffb87dbf11188d54d3152d855e6741e3b107f0c92dc9e037e421d531ad2921226fe0b71042ede302
SSDEEP

6144:BqgzUOOHyHYY9CU3v/fQ1Buu48mVUKfm8XZdpqRI:BqgzyyHYY9CU3v/EBuu48iUQXAK

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

1588 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

564 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 564 taskkill.exe

pid	process
1588	cmd.exe

pid	process
564	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	564	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.execmd.exe

description	pid	process	target process
PID 1724 wrote to memory of 1588	1724	bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe	cmd.exe
PID 1724 wrote to memory of 1588	1724	bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe	cmd.exe
PID 1724 wrote to memory of 1588	1724	bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe	cmd.exe
PID 1724 wrote to memory of 1588	1724	bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe	cmd.exe
PID 1588 wrote to memory of 564	1588	cmd.exe	taskkill.exe
PID 1588 wrote to memory of 564	1588	cmd.exe	taskkill.exe
PID 1588 wrote to memory of 564	1588	cmd.exe	taskkill.exe
PID 1588 wrote to memory of 564	1588	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe
"C:\Users\Admin\AppData\Local\Temp\bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1588
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "bf1da988e71f4e6b5aa9ad169d1637ac47ac43b548fdb1173733922d620572c5.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:564

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/1724-55-0x0000000000400000-0x0000000000588000-memory.dmp

Filesize
1.5MB

Download
memory/1724-56-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download