gcleaner | 7b5d5d1ce731da4dad7785b72aa7f24a62b2a9cb202c824ca6d3aeb8492d7aab

Analysis

max time kernel
120s
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 07:42

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General

Target

JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
Size

444KB
MD5

561a8be32d127d240913bf8f7bf45aba
SHA1

6e8a5656a52176b39a1e0370514cfdfeddbc6910
SHA256

7b5d5d1ce731da4dad7785b72aa7f24a62b2a9cb202c824ca6d3aeb8492d7aab
SHA512

bcbc8d87ba9360ef24be67ba18156a3ae209fd01d1315c6d43473720601bed544200850d886e76b0f53d4270dabc7149c5d5ba21d8b9ed7024998b20dbfffbf3
SSDEEP

12288:blvgaJnWq36kMw03CPctkuGhAjeZMYJgiIUa:bnJWq36kMTffjUMYmn

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/3044-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/3044-2-0x0000000000220000-0x0000000000269000-memory.dmp	family_onlylogger
behavioral1/memory/3044-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral1/memory/3044-4-0x0000000000400000-0x000000000089E000-memory.dmp	family_onlylogger

Deletes itself 1 IoCs

pid	Process
772	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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1288	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1288	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 772	3044	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	30
PID 3044 wrote to memory of 772	3044	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	30
PID 3044 wrote to memory of 772	3044	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	30
PID 3044 wrote to memory of 772	3044	JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe	30
PID 772 wrote to memory of 1288	772	cmd.exe	32
PID 772 wrote to memory of 1288	772	cmd.exe	32
PID 772 wrote to memory of 1288	772	cmd.exe	32
PID 772 wrote to memory of 1288	772	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:772
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_561a8be32d127d240913bf8f7bf45aba.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1288

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

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Downloads

memory/3044-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3044-2-0x0000000000220000-0x0000000000269000-memory.dmp

Filesize
292KB

Download
memory/3044-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/3044-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3044-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

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