gcleaner | e8bd4db9b069b622540be5f46b4fdd426d1488dc6841625d8a5c0ce9b9f652b1

Analysis

max time kernel
101s
max time network
127s
platform
windows11-21h2_x64
resource
win11-20250619-en
resource tags

arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
submitted
30/09/2025, 04:06

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General

Target
file.exe
Size 3.4MB
Sample250930-epa8cazzcw
SHA256 e8bd4db9b069b622540be5f46b4fdd426d1488dc6841625d8a5c0ce9b9f652b1
MD5 33e80aae647a725c1918d10a731587d9
SHA1 03063d92b6dc4afc5c0c41002b6e9601304152d3
SHA512 5861b0125969883c47dc9bdd903f6b58044394a6688d87740a9b55017946fc45a9069129f20c15619ced3b5f7f13316bb8a62604766c44dbd0465536a2677d40
SSDEEP 49152:Nh0ZbvK0+zBdoAvvQhRe7D1xW6BCbxB2TfwRplBWtETj78ZrqlrpssO:NhCLPadoEvi07Kxz2tY7KWlssO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery gcleaner loader

Malware Config

Extracted

Family

gcleaner

185.156.73.98
45.91.200.135

Signatures

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
10	5224	svchost015.exe

Executes dropped EXE 1 IoCs

pid	Process
5224	svchost015.exe

Loads dropped DLL 1 IoCs

pid	Process
5224	svchost015.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3524 set thread context of 5224	3524	file.exe	78

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 2 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	svchost015.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3524 wrote to memory of 5224	3524	file.exe	78
PID 3524 wrote to memory of 5224	3524	file.exe	78
PID 3524 wrote to memory of 5224	3524	file.exe	78
PID 3524 wrote to memory of 5224	3524	file.exe	78

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3524
- C:\Users\Admin\AppData\Local\Temp\svchost015.exe
  C:\Users\Admin\AppData\Local\Temp\svchost015.exe
  2⤵
  - Downloads MZ/PE file
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:5224

Network

MITRE ATT&CK Enterprise v16

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

service[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\UHPR67SH\service[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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svchost015.exe

Path C:\Users\Admin\AppData\Local\Temp\svchost015.exe
Size 2.6MB
SHA256 4e04e2fb20a9c6846b5d693ea67098214f77737f4f1f3df5f0c78594650e7f71
MD5 ceeae1523c3864b719e820b75bf728aa
SHA1 cf607927b6ef864a11bf7ebbcdbb59891d23d320
SHA512 a06da3b96084040d49964b2227402ff1a2548ee5f1459df6b64bc6cbb271f19a00a798333e0f608d03c5a6de7355ae916309250204900117e3ef101f764d0f5f
SSDEEP 49152:OmI7Yi7hoaYCDuYX5417hQSCJV93mWADzh:/iVomD/pQhQYWuzh
MD5 SHA1 SHA512 SSDEEP

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memory/3524-0-0x0000000002610000-0x0000000002611000-memory.dmp

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memory/3524-1-0x0000000000490000-0x0000000000491000-memory.dmp

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memory/3524-2-0x0000000000400000-0x0000000000772000-memory.dmp

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memory/5224-19-0x0000000000950000-0x000000000097F000-memory.dmp

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memory/5224-22-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/5224-27-0x0000000000950000-0x000000000097F000-memory.dmp

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memory/5224-47-0x0000000000950000-0x000000000097F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads