gcleaner | 6851b72e0bfaf608294bcac6ffef07e5e6591aee8b94ce9afad46b6e6cc32a59

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-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

resource	yara_rule
behavioral19/memory/2716-2-0x00000000001B0000-0x00000000001FC000-memory.dmp	family_onlylogger
behavioral19/memory/2716-3-0x0000000000400000-0x0000000000450000-memory.dmp	family_onlylogger
behavioral19/memory/2716-6-0x0000000000400000-0x0000000000450000-memory.dmp	family_onlylogger
behavioral19/memory/2716-5-0x00000000001B0000-0x00000000001FC000-memory.dmp	family_onlylogger
behavioral19/memory/2716-4-0x0000000000400000-0x000000000058E000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

pid	Process
2792	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Wed09cfb2f9758281d8.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2700	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2700	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2792	2716	Wed09cfb2f9758281d8.exe	30
PID 2716 wrote to memory of 2792	2716	Wed09cfb2f9758281d8.exe	30
PID 2716 wrote to memory of 2792	2716	Wed09cfb2f9758281d8.exe	30
PID 2716 wrote to memory of 2792	2716	Wed09cfb2f9758281d8.exe	30
PID 2792 wrote to memory of 2700	2792	cmd.exe	32
PID 2792 wrote to memory of 2700	2792	cmd.exe	32
PID 2792 wrote to memory of 2700	2792	cmd.exe	32
PID 2792 wrote to memory of 2700	2792	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09cfb2f9758281d8.exe
"C:\Users\Admin\AppData\Local\Temp\setup_installer\Wed09cfb2f9758281d8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- 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⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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:2700

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

Replay Monitor

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Downloads

memory/2716-2-0x00000000001B0000-0x00000000001FC000-memory.dmp

Filesize
304KB

Download
memory/2716-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2716-3-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2716-6-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2716-5-0x00000000001B0000-0x00000000001FC000-memory.dmp

Filesize
304KB

Download
memory/2716-4-0x0000000000400000-0x000000000058E000-memory.dmp

Filesize
1.6MB

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