gcleaner | 6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
29/08/2024, 22:37

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General

Target

6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe
Size

308KB
MD5

e4ff3bee77eea05ba54f0e0757341837
SHA1

690e83f77e71a3d5366453ce20809e0815f97105
SHA256

6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c
SHA512

2789f481bde6012d3a80c94d38a77696a1f48ddbdc65c66c874ae47d8532ee7efc193578f482e574769ed7ae9d0eb6d0a471631614b5019dd6d150b2f6336f55
SSDEEP

3072:nMjOScSxw4QffmVYe+xm5Y3mh8vJY+pvK7UOt1FI2JsHI4aMvy/:nMjOSzxdQxeD5Yc8vK7wYso4amy

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Deletes itself 1 IoCs

pid	Process
2688	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.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
2492	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 2688	3004	6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe	31
PID 3004 wrote to memory of 2688	3004	6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe	31
PID 3004 wrote to memory of 2688	3004	6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe	31
PID 3004 wrote to memory of 2688	3004	6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe	31
PID 2688 wrote to memory of 2492	2688	cmd.exe	33
PID 2688 wrote to memory of 2492	2688	cmd.exe	33
PID 2688 wrote to memory of 2492	2688	cmd.exe	33
PID 2688 wrote to memory of 2492	2688	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe
"C:\Users\Admin\AppData\Local\Temp\6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "6f4c8936d3a99cb30a58c294ceeaf158587a6fc1776a6dba4213134e4225734c.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\GE5J41S2\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3004-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/3004-3-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3004-2-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3004-9-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/3004-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3004-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3004-23-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/3004-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3004-21-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download