gcleaner | 079b91f70c2044f6ab1e346c4092ea661a4a2fb0ed8766401b1ee8f569f76a52

General

Target

JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe
Size

443KB
MD5

439568d8164b4e3e1cd0a49e7e21dc22
SHA1

6b42c56eb7c5dade339a00577f8707f8d6ae1f3f
SHA256

079b91f70c2044f6ab1e346c4092ea661a4a2fb0ed8766401b1ee8f569f76a52
SHA512

d4d4287f53bc3628356cbf92b7e2bedd871603709fd9998fd1769cddb4a11cb1a75a404c6f8a4549a4951dce27641bde3277fa8245f4e4407ff31720ec99d67a
SSDEEP

12288:4WM1dcA6K1K93oupFHnubPMs+DF5N7miz8WL:4QKO37p2U1D/N7Lf

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

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 5 IoCs

resource	yara_rule
behavioral2/memory/2880-2-0x0000000000D70000-0x0000000000DB9000-memory.dmp	family_onlylogger
behavioral2/memory/2880-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2880-5-0x0000000000D70000-0x0000000000DB9000-memory.dmp	family_onlylogger
behavioral2/memory/2880-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2880-4-0x0000000000400000-0x000000000089E000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe

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

System Information Discovery
T1082

Program crash 7 IoCs

pid	pid_target	Process	procid_target
4740	2880	WerFault.exe	82
5008	2880	WerFault.exe	82
1836	2880	WerFault.exe	82
4456	2880	WerFault.exe	82
2980	2880	WerFault.exe	82
2092	2880	WerFault.exe	82
2088	2880	WerFault.exe	82

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_439568d8164b4e3e1cd0a49e7e21dc22.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
4020	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4020	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 4948	2880	JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe	97
PID 2880 wrote to memory of 4948	2880	JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe	97
PID 2880 wrote to memory of 4948	2880	JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe	97
PID 4948 wrote to memory of 4020	4948	cmd.exe	101
PID 4948 wrote to memory of 4020	4948	cmd.exe	101
PID 4948 wrote to memory of 4020	4948	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 732
  2⤵
  - Program crash
  PID:4740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 776
  2⤵
  - Program crash
  PID:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 892
  2⤵
  - Program crash
  PID:1836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 900
  2⤵
  - Program crash
  PID:4456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 900
  2⤵
  - Program crash
  PID:2980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 924
  2⤵
  - Program crash
  PID:2092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_439568d8164b4e3e1cd0a49e7e21dc22.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2880 -s 980
  2⤵
  - Program crash
  PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2880 -ip 2880
1⤵
PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2880 -ip 2880
1⤵
PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2880 -ip 2880
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2880 -ip 2880
1⤵
PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2880 -ip 2880
1⤵
PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2880 -ip 2880
1⤵
PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2880 -ip 2880
1⤵
PID:812

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

Loading Replay Monitor...

Downloads

memory/2880-1-0x0000000000C70000-0x0000000000D70000-memory.dmp

Filesize
1024KB

Download
memory/2880-2-0x0000000000D70000-0x0000000000DB9000-memory.dmp

Filesize
292KB

Download
memory/2880-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2880-5-0x0000000000D70000-0x0000000000DB9000-memory.dmp

Filesize
292KB

Download
memory/2880-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2880-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download

Analysis

Sharing