gcleaner | 9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108

General

Target

9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe
Size

415KB
MD5

df081bd571392ca5ded1ca50a1d11f57
SHA1

6ad0e67c3a12f1c14d6b38ac0c9f6671e1178448
SHA256

9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108
SHA512

039f23ba68442d4b24cbf278ad66a16a9545b345be2729d45cfe5f95da652a122141f4d1b3471b6a91c43b8bbb6cb906b1f6e646d0ae597945396d88c36811ce
SSDEEP

3072:4mXEm/RgfbYPVlJhzsE+ELgRZXT9alY2IKoSUBRUO8w4H+BMCaErm3qCVvDiD2:XE2OfbYPzsZELwjn6ULUI4e2C1aqGDC

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
3120	4512	WerFault.exe	72
960	4512	WerFault.exe	72
4972	4512	WerFault.exe	72
4872	4512	WerFault.exe	72
292	4512	WerFault.exe	72
3700	4512	WerFault.exe	72
4576	4512	WerFault.exe	72
3916	4512	WerFault.exe	72

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2844	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2844	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 1512	4512	9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe	82
PID 4512 wrote to memory of 1512	4512	9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe	82
PID 4512 wrote to memory of 1512	4512	9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe	82
PID 1512 wrote to memory of 2844	1512	cmd.exe	84
PID 1512 wrote to memory of 2844	1512	cmd.exe	84
PID 1512 wrote to memory of 2844	1512	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe
"C:\Users\Admin\AppData\Local\Temp\9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 760
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 808
  2⤵
  - Program crash
  PID:960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 768
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 968
  2⤵
  - Program crash
  PID:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1008
  2⤵
  - Program crash
  PID:292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1092
  2⤵
  - Program crash
  PID:3700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1124
  2⤵
  - Program crash
  PID:4576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1272
  2⤵
  - Program crash
  PID:3916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9bf7c1a6f1ad7d8f4cf95d56162a3865c22e8ebc229c3dbc97a237047c044108.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\E49JWOHD\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4512-2-0x0000000000740000-0x000000000076D000-memory.dmp

Filesize
180KB

Download
memory/4512-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/4512-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4512-8-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/4512-10-0x0000000000740000-0x000000000076D000-memory.dmp

Filesize
180KB

Download
memory/4512-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4512-11-0x0000000000400000-0x00000000005FB000-memory.dmp

Filesize
2.0MB

Download
memory/4512-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4512-21-0x0000000000400000-0x00000000005FB000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing