gcleaner | 8df85de69eca57ba12d2044e751c655cef674fb84b9a78d0c3f48c7d71285eef

General

Target

JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe
Size

444KB
MD5

44a20c6259effbc4f8d19d3b9ad9e79e
SHA1

170ad5ae18a3080f27ca66bae3cb5eaf4125e4d1
SHA256

8df85de69eca57ba12d2044e751c655cef674fb84b9a78d0c3f48c7d71285eef
SHA512

996009c1ca9ef758f0529645962c83b6ca9f603edf7fc43d7dcb844cc3698e67b82629f705c592714f297def233cdef73ffa7a94342d542a25ab4bc6bc645c8b
SSDEEP

6144:AP4wNuvLiiCuTp96R6NIDCClmktNrKoHTR3RgBWSyj3L8cBzquus/fqQ3hQ/:AwUbvcr6wODCItNLthgWdj3L8Iks/SQ

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/4640-2-0x0000000000D90000-0x0000000000DD9000-memory.dmp	family_onlylogger
behavioral2/memory/4640-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4640-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4640-5-0x0000000000D90000-0x0000000000DD9000-memory.dmp	family_onlylogger
behavioral2/memory/4640-4-0x0000000000400000-0x000000000089E000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.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
2944	4640	WerFault.exe	82
3096	4640	WerFault.exe	82
2984	4640	WerFault.exe	82
4568	4640	WerFault.exe	82
1532	4640	WerFault.exe	82
4424	4640	WerFault.exe	82
3228	4640	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_44a20c6259effbc4f8d19d3b9ad9e79e.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
4876	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4876	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4640 wrote to memory of 716	4640	JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe	96
PID 4640 wrote to memory of 716	4640	JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe	96
PID 4640 wrote to memory of 716	4640	JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe	96
PID 716 wrote to memory of 4876	716	cmd.exe	100
PID 716 wrote to memory of 4876	716	cmd.exe	100
PID 716 wrote to memory of 4876	716	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 740
  2⤵
  - Program crash
  PID:2944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 784
  2⤵
  - Program crash
  PID:3096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 792
  2⤵
  - Program crash
  PID:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 936
  2⤵
  - Program crash
  PID:4568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 936
  2⤵
  - Program crash
  PID:1532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 944
  2⤵
  - Program crash
  PID:4424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:716
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_44a20c6259effbc4f8d19d3b9ad9e79e.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4876
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 712
  2⤵
  - Program crash
  PID:3228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4640 -ip 4640
1⤵
PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4640 -ip 4640
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4640 -ip 4640
1⤵
PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4640 -ip 4640
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4640 -ip 4640
1⤵
PID:1196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4640 -ip 4640
1⤵
PID:3716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4640 -ip 4640
1⤵
PID:1720

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

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Downloads

memory/4640-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/4640-2-0x0000000000D90000-0x0000000000DD9000-memory.dmp

Filesize
292KB

Download
memory/4640-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4640-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4640-5-0x0000000000D90000-0x0000000000DD9000-memory.dmp

Filesize
292KB

Download
memory/4640-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download

Analysis

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