gcleaner | 9ec1d249fece00d7b3429ce1d589f27a13470f2d157c0e99f18f5b331a8276c9

General

Target

5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe
Size

339KB
MD5

5326f1a18bdef318d330e01b6c12e3d0
SHA1

081efe3c4989cccb6d8c88ae0e1e8793ca028a05
SHA256

9ec1d249fece00d7b3429ce1d589f27a13470f2d157c0e99f18f5b331a8276c9
SHA512

36f10f7a8f69b6918b15f0371db75614a7bd57e393f4d1316f2cf031ae6fa9ee0b6c4619af99f548e01e92f937bbf153d621c5c2fbcb923f0bccadcce84a6c75
SSDEEP

6144:M2PfPb/tT7x/jwuxEHBvFqU49JDDVVxoMAuimEu75Pf:M2PfPbFV/1uHbl4fDDDxJAuHVZ

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/5072-2-0x0000000000A50000-0x0000000000A98000-memory.dmp	family_onlylogger
behavioral2/memory/5072-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/5072-5-0x0000000000A50000-0x0000000000A98000-memory.dmp	family_onlylogger
behavioral2/memory/5072-6-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/5072-4-0x0000000000400000-0x0000000000885000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe

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

System Information Discovery
T1082

Program crash 6 IoCs

pid	pid_target	Process	procid_target
1864	5072	WerFault.exe	85
4208	5072	WerFault.exe	85
4952	5072	WerFault.exe	85
5032	5072	WerFault.exe	85
4632	5072	WerFault.exe	85
848	5072	WerFault.exe	85

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	5326f1a18bdef318d330e01b6c12e3d0_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
4424	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4424	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 2012	5072	5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe	105
PID 5072 wrote to memory of 2012	5072	5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe	105
PID 5072 wrote to memory of 2012	5072	5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe	105
PID 2012 wrote to memory of 4424	2012	cmd.exe	107
PID 2012 wrote to memory of 4424	2012	cmd.exe	107
PID 2012 wrote to memory of 4424	2012	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 688
  2⤵
  - Program crash
  PID:1864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 784
  2⤵
  - Program crash
  PID:4208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 792
  2⤵
  - Program crash
  PID:4952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 916
  2⤵
  - Program crash
  PID:5032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 916
  2⤵
  - Program crash
  PID:4632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 972
  2⤵
  - Program crash
  PID:848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5326f1a18bdef318d330e01b6c12e3d0_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5072 -ip 5072
1⤵
PID:4908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5072 -ip 5072
1⤵
PID:448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 5072 -ip 5072
1⤵
PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 5072 -ip 5072
1⤵
PID:2532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 5072 -ip 5072
1⤵
PID:4024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 5072 -ip 5072
1⤵
PID:3004

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/5072-1-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

Filesize
1024KB

Download
memory/5072-2-0x0000000000A50000-0x0000000000A98000-memory.dmp

Filesize
288KB

Download
memory/5072-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/5072-5-0x0000000000A50000-0x0000000000A98000-memory.dmp

Filesize
288KB

Download
memory/5072-6-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/5072-4-0x0000000000400000-0x0000000000885000-memory.dmp

Filesize
4.5MB

Download

Analysis

Sharing