gcleaner | f86e0b6a25979857689621f97e1e5f922184951e3461738869756b0228552e5a

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 05:54

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General

Target

JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe
Size

434KB
MD5

5144211e10e4f1d9d37f2d4db73a4905
SHA1

1eb0bbefb50adbd8e715ba489f29ebd1a2bff26e
SHA256

f86e0b6a25979857689621f97e1e5f922184951e3461738869756b0228552e5a
SHA512

84d5d8af932d2e82ad774593fd931cd58fa39c33aca29fae590da1ea02442d7f29ce4cc45000fc4b3532f1981977b58a7a755b07a87bd74389857f568992e46a
SSDEEP

12288:zzI8cv58+wGnt8MWn03argrhMqoI8brrCP1buwr:zkHhWGntq0XD8vrCNiG

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

gcl-gb.biz

45.9.20.13

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 4 IoCs

resource	yara_rule
behavioral1/memory/1308-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/1308-2-0x00000000002D0000-0x0000000000319000-memory.dmp	family_onlylogger
behavioral1/memory/1308-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/1308-4-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

pid	Process
1140	cmd.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.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
3064	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1308 wrote to memory of 1140	1308	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	30
PID 1308 wrote to memory of 1140	1308	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	30
PID 1308 wrote to memory of 1140	1308	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	30
PID 1308 wrote to memory of 1140	1308	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	30
PID 1140 wrote to memory of 3064	1140	cmd.exe	32
PID 1140 wrote to memory of 3064	1140	cmd.exe	32
PID 1140 wrote to memory of 3064	1140	cmd.exe	32
PID 1140 wrote to memory of 3064	1140	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1140
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3064

Network

MITRE ATT&CK Enterprise v15

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

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Downloads

memory/1308-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1308-2-0x00000000002D0000-0x0000000000319000-memory.dmp

Filesize
292KB

Download
memory/1308-1-0x0000000000940000-0x0000000000A40000-memory.dmp

Filesize
1024KB

Download
memory/1308-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1308-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

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