gcleaner | ec078afc81fa56ec6282d5645e584a1b009fb69d86332ee340cea66aeb60b830

Analysis

max time kernel
31s
max time network
34s
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

ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe
Size

264KB
MD5

eea01ea8e153688c3526ba719db41e4a
SHA1

cd618f3d4988e1eb4927b3586a45654954e9e8b4
SHA256

ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9
SHA512

887b28fea13daab34bea6ee8b34dff8b9e8559879a426702ab140bc240f2d0aeaf768fdbd303a6de137dc8abffa222d2537669ee0bddc4c438605a6fff44acd4
SSDEEP

3072:O/rtOYPo98S5fAlHfu6ctbqYX18hvgJrv2Tk+CQK1iCrvnAbUeypMs+okF:DMoaS5DSo72AX+CrvAQgs+h

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

340 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

1764 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1764 taskkill.exe

pid	process
340	cmd.exe

pid	process
1764	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1764	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.execmd.exe

description	pid	process	target process
PID 1544 wrote to memory of 340	1544	ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe	cmd.exe
PID 1544 wrote to memory of 340	1544	ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe	cmd.exe
PID 1544 wrote to memory of 340	1544	ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe	cmd.exe
PID 1544 wrote to memory of 340	1544	ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe	cmd.exe
PID 340 wrote to memory of 1764	340	cmd.exe	taskkill.exe
PID 340 wrote to memory of 1764	340	cmd.exe	taskkill.exe
PID 340 wrote to memory of 1764	340	cmd.exe	taskkill.exe
PID 340 wrote to memory of 1764	340	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe
"C:\Users\Admin\AppData\Local\Temp\ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:340
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "ec4a3b4195a3e96b2368b55ebb4c3c64e07a2d84e8f5b8a501b0547473ebf9d9.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1764

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/1544-55-0x0000000000220000-0x0000000000260000-memory.dmp

Filesize
256KB

Download
memory/1544-56-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1544-58-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download