gcleaner | 431da2bfead5da6bfa24bf8ecd9a43863ff06f0ea5cf76f330d7359ade0b23b6

General

Target

JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe
Size

444KB
MD5

618b9c37470513652fcee22a118b31bd
SHA1

db1ef92f18adcdbdb7a7e41a3942b7bd47adac3d
SHA256

431da2bfead5da6bfa24bf8ecd9a43863ff06f0ea5cf76f330d7359ade0b23b6
SHA512

25ca82f50c2df6fa23c588f0e1e5f98ceb85463f41729ce029b44ed46eeeb7057cfbe2ee38246fc5b9f4d4604dab55ea3dc2553c42195747fb55ea9db9632ab2
SSDEEP

12288:jydTPaHeEs1JnOWYHU5YxA78uAtd44m1UDajcKaq:jOTPaHeE8OWXIuj4m2Dcaq

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/4736-2-0x0000000000B20000-0x0000000000B69000-memory.dmp	family_onlylogger
behavioral2/memory/4736-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4736-5-0x0000000000B20000-0x0000000000B69000-memory.dmp	family_onlylogger
behavioral2/memory/4736-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4736-4-0x0000000000400000-0x000000000089E000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_618b9c37470513652fcee22a118b31bd.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
4120	4736	WerFault.exe	81
1476	4736	WerFault.exe	81
1000	4736	WerFault.exe	81
3084	4736	WerFault.exe	81
2868	4736	WerFault.exe	81
5012	4736	WerFault.exe	81
716	4736	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	JaffaCakes118_618b9c37470513652fcee22a118b31bd.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
1480	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1480	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2108	4736	JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe	95
PID 4736 wrote to memory of 2108	4736	JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe	95
PID 4736 wrote to memory of 2108	4736	JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe	95
PID 2108 wrote to memory of 1480	2108	cmd.exe	99
PID 2108 wrote to memory of 1480	2108	cmd.exe	99
PID 2108 wrote to memory of 1480	2108	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 720
  2⤵
  - Program crash
  PID:4120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 784
  2⤵
  - Program crash
  PID:1476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 792
  2⤵
  - Program crash
  PID:1000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 860
  2⤵
  - Program crash
  PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 920
  2⤵
  - Program crash
  PID:2868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 928
  2⤵
  - Program crash
  PID:5012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_618b9c37470513652fcee22a118b31bd.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4736 -s 1044
  2⤵
  - Program crash
  PID:716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4736 -ip 4736
1⤵
PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4736 -ip 4736
1⤵
PID:2768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4736 -ip 4736
1⤵
PID:3856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4736 -ip 4736
1⤵
PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4736 -ip 4736
1⤵
PID:460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4736 -ip 4736
1⤵
PID:2668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4736 -ip 4736
1⤵
PID:524

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/4736-1-0x0000000000C00000-0x0000000000D00000-memory.dmp

Filesize
1024KB

Download
memory/4736-2-0x0000000000B20000-0x0000000000B69000-memory.dmp

Filesize
292KB

Download
memory/4736-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4736-5-0x0000000000B20000-0x0000000000B69000-memory.dmp

Filesize
292KB

Download
memory/4736-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4736-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download

Analysis

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