gcleaner | 3a37b8cf55a83dd9fab4550f6a83522a4995dd365112c651c9cfd700ec9cbb06

General

Target

2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe
Size

398KB
MD5

2b7eb734363ad47b73fcfeb5d7e7ec5a
SHA1

54dc5409a06798848413f263486316e8947ed657
SHA256

3a37b8cf55a83dd9fab4550f6a83522a4995dd365112c651c9cfd700ec9cbb06
SHA512

a9879489976c4657f8900e61309a5ada953487d44ebc25b9d50a7b428c452f3533a4dac26d7432eb069bbb9f7cfc1ba12fa0f986c378e24932a7df37ef51bf01
SSDEEP

6144:+fGIZnKPiSiEQaJOTACiPjctDWgBBTcsV09Jb3PtDqJL65BOOhxxdeTr/ekI:OKPi9EQa4wPjeKgDov9l3CL67zxd6L

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-page.biz

194.145.227.161

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/1360-2-0x0000000000660000-0x00000000006A8000-memory.dmp	family_onlylogger
behavioral2/memory/1360-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/1360-6-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/1360-5-0x0000000000660000-0x00000000006A8000-memory.dmp	family_onlylogger
behavioral2/memory/1360-4-0x0000000000400000-0x0000000000470000-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	2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.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
684	1360	WerFault.exe	81
4820	1360	WerFault.exe	81
1116	1360	WerFault.exe	81
4620	1360	WerFault.exe	81
2012	1360	WerFault.exe	81
312	1360	WerFault.exe	81
3076	1360	WerFault.exe	81

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	2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.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
5076	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5076	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 4508	1360	2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe	99
PID 1360 wrote to memory of 4508	1360	2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe	99
PID 1360 wrote to memory of 4508	1360	2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe	99
PID 4508 wrote to memory of 5076	4508	cmd.exe	102
PID 4508 wrote to memory of 5076	4508	cmd.exe	102
PID 4508 wrote to memory of 5076	4508	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 688
  2⤵
  - Program crash
  PID:684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 792
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 800
  2⤵
  - Program crash
  PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 800
  2⤵
  - Program crash
  PID:4620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 800
  2⤵
  - Program crash
  PID:2012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 964
  2⤵
  - Program crash
  PID:312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4508
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "2b7eb734363ad47b73fcfeb5d7e7ec5a_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 972
  2⤵
  - Program crash
  PID:3076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1360 -ip 1360
1⤵
PID:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1360 -ip 1360
1⤵
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1360 -ip 1360
1⤵
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1360 -ip 1360
1⤵
PID:3476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1360 -ip 1360
1⤵
PID:4480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1360 -ip 1360
1⤵
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1360 -ip 1360
1⤵
PID:3200

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/1360-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download
memory/1360-2-0x0000000000660000-0x00000000006A8000-memory.dmp

Filesize
288KB

Download
memory/1360-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/1360-6-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/1360-5-0x0000000000660000-0x00000000006A8000-memory.dmp

Filesize
288KB

Download
memory/1360-4-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

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