gcleaner | 6851b72e0bfaf608294bcac6ffef07e5e6591aee8b94ce9afad46b6e6cc32a59

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 09:28

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General

Target

setup_installer/Wed09cfb2f9758281d8.exe
Size

362KB
MD5

dcf289d0f7a31fc3e6913d6713e2adc0
SHA1

44be915c2c70a387453224af85f20b1e129ed0f0
SHA256

06edeee5eaf02a2ee9849ca2b8bc9ec67c39c338c9b184c04f5f0da7c6bedfa5
SHA512

7035e016476ce5bd670dc23cf83115bb82b65e58e858e07c843a3e77584a3c0119aaa688f73761ac3388b648ab9dbf88378aa0a6fe82e269b8e9bd347c37ebca
SSDEEP

6144:FFTcfqsL9FV/NzaTCoJZrrWkPsMAtexET4ftYDIy8+Dxxs:bcfq6B5oBrfPsMAtexhfteIa

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

gcl-gb.biz

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Gcleaner family
gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger
Onlylogger family
onlylogger

OnlyLogger payload 5 IoCs

Processes:

resource	yara_rule
behavioral20/memory/980-2-0x0000000000590000-0x00000000005DC000-memory.dmp	family_onlylogger
behavioral20/memory/980-3-0x0000000000400000-0x0000000000450000-memory.dmp	family_onlylogger
behavioral20/memory/980-5-0x0000000000590000-0x00000000005DC000-memory.dmp	family_onlylogger
behavioral20/memory/980-6-0x0000000000400000-0x0000000000450000-memory.dmp	family_onlylogger
behavioral20/memory/980-4-0x0000000000400000-0x000000000058E000-memory.dmp	family_onlylogger

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

Processes:

Wed09cfb2f9758281d8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Wed09cfb2f9758281d8.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
4388	980	WerFault.exe	Wed09cfb2f9758281d8.exe
2856	980	WerFault.exe	Wed09cfb2f9758281d8.exe
3820	980	WerFault.exe	Wed09cfb2f9758281d8.exe
4260	980	WerFault.exe	Wed09cfb2f9758281d8.exe
2268	980	WerFault.exe	Wed09cfb2f9758281d8.exe
4676	980	WerFault.exe	Wed09cfb2f9758281d8.exe
2688	980	WerFault.exe	Wed09cfb2f9758281d8.exe

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

Processes:

taskkill.exeWed09cfb2f9758281d8.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wed09cfb2f9758281d8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3308 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3308 taskkill.exe

pid	process
3308	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3308	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Wed09cfb2f9758281d8.execmd.exe

description	pid	process	target process
PID 980 wrote to memory of 3708	980	Wed09cfb2f9758281d8.exe	cmd.exe
PID 980 wrote to memory of 3708	980	Wed09cfb2f9758281d8.exe	cmd.exe
PID 980 wrote to memory of 3708	980	Wed09cfb2f9758281d8.exe	cmd.exe
PID 3708 wrote to memory of 3308	3708	cmd.exe	taskkill.exe
PID 3708 wrote to memory of 3308	3708	cmd.exe	taskkill.exe
PID 3708 wrote to memory of 3308	3708	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09cfb2f9758281d8.exe
"C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09cfb2f9758281d8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 692
  2⤵
  - Program crash
  PID:4388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 788
  2⤵
  - Program crash
  PID:2856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 944
  2⤵
  - Program crash
  PID:3820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 976
  2⤵
  - Program crash
  PID:4260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 996
  2⤵
  - Program crash
  PID:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 992
  2⤵
  - Program crash
  PID:4676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "Wed09cfb2f9758281d8.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09cfb2f9758281d8.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3708
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "Wed09cfb2f9758281d8.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 748
  2⤵
  - Program crash
  PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 980 -ip 980
1⤵
PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 980 -ip 980
1⤵
PID:5116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 980 -ip 980
1⤵
PID:2080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 980 -ip 980
1⤵
PID:1736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 980 -ip 980
1⤵
PID:4540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 980 -ip 980
1⤵
PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 980 -ip 980
1⤵
PID:3812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/980-1-0x0000000000780000-0x0000000000880000-memory.dmp

Filesize
1024KB

Download
memory/980-2-0x0000000000590000-0x00000000005DC000-memory.dmp

Filesize
304KB

Download
memory/980-3-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/980-5-0x0000000000590000-0x00000000005DC000-memory.dmp

Filesize
304KB

Download
memory/980-6-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/980-4-0x0000000000400000-0x000000000058E000-memory.dmp

Filesize
1.6MB

Download