gcleaner | 2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84

General

Target

2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe
Size

278KB
MD5

9b5828c209e935d021e48fad0b860b99
SHA1

bd470d7ebda67f137cc6d2d9b3bc7c58b521162f
SHA256

2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84
SHA512

96f81d2fc50ef4834c1b74a375f4e13d10499d0d2fd680fd31d5ca01d7f6292511130848d1f67d4d711e4779914031a4d449523f0bee15eb07956ff461c049fd
SSDEEP

6144:EBoUgpj8IR833ylSFU1Ut4nnc2dbQYHfNO1R:+oUgp833ylN1fc2dkYM

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4752 set thread context of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87

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 4 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	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.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
1700	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 4752 wrote to memory of 3464	4752	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	87
PID 3464 wrote to memory of 3528	3464	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	98
PID 3464 wrote to memory of 3528	3464	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	98
PID 3464 wrote to memory of 3528	3464	2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe	98
PID 3528 wrote to memory of 1700	3528	cmd.exe	100
PID 3528 wrote to memory of 1700	3528	cmd.exe	100
PID 3528 wrote to memory of 1700	3528	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe
"C:\Users\Admin\AppData\Local\Temp\2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Users\Admin\AppData\Local\Temp\2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe
  "C:\Users\Admin\AppData\Local\Temp\2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3464
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im "2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3528
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im "2f163695c836b76ef1d008d63f28dfbaa0fdaf2ba3772ed09ae1d82f872fdc84.exe" /f
      4⤵
      System Location Discovery: System Language Discovery
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4329235D\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3464-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-4-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-5-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-7-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-6-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3464-18-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3464-35-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4752-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/4752-2-0x00000000004D0000-0x000000000050B000-memory.dmp

Filesize
236KB

Download

Analysis

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