gcleaner | 841bd3307cb1a34c5f6a907217bd09c5e4d9e7500e2863a8cd956793014d5f2e

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20260126-en
resource tags

arch:x64arch:x86image:win11-20260126-enlocale:en-usos:windows11-21h2-x64system
submitted
27/01/2026, 14:26

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General

Target
file.exe
Size 741KB
Sample260127-rr33csaz6e
SHA256 841bd3307cb1a34c5f6a907217bd09c5e4d9e7500e2863a8cd956793014d5f2e
MD5 848d2df9ffd28239721b660752856528
SHA1 16eb0174503e4500faf78860f21691a54cafd993
SHA512 8302845274b854c5b478e72d1a692845f1d6bc4192f00058ce86b3525afaa897eb36f08f83c259921735dae3f5dcbbcec4bcdb92f8f44dec267b81f526e099cc
SSDEEP 6144:72vNWx6nV0Q+ZirzUG3pw/8BNYvvkUtu7mm3meVHxV3kTKdiSKG5/KWQ7N3XeprM:8Wxa7+IlSRsrHxyG5HallhK76EG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery gcleaner loader

Malware Config

Extracted

Family

gcleaner

185.156.73.98

Signatures

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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2336 created 2184	2336	file.exe	51

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 4848	2336	file.exe	77

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2336	file.exe
2336	file.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77
PID 2336 wrote to memory of 4848	2336	file.exe	77

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2184
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2336
- C:\Windows\SysWOW64\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4848

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

service[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\HLKWLM88\service[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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memory/2336-0-0x0000000002350000-0x0000000002351000-memory.dmp

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memory/2336-1-0x0000000000462000-0x0000000000463000-memory.dmp

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memory/2336-2-0x0000000002380000-0x0000000002381000-memory.dmp

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memory/2336-3-0x0000000000400000-0x00000000004BF000-memory.dmp

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memory/2336-4-0x00000000023F0000-0x0000000002415000-memory.dmp

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memory/4848-13-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-11-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-10-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-9-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-8-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-7-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-6-0x0000000000E30000-0x0000000000E59000-memory.dmp

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memory/4848-5-0x0000000000E20000-0x0000000000E21000-memory.dmp

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