gcleaner | a3d91ee98b9508917914bd31090532ccb90269fff015e6957189cf174d0a03b5

General

Target

ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe
Size

381KB
MD5

ef785714c6502ab3b553733b332e0be6
SHA1

725374526c57b1732c3fb0e97ab947d3487e1797
SHA256

a3d91ee98b9508917914bd31090532ccb90269fff015e6957189cf174d0a03b5
SHA512

bd09432466ecf40ffe9dfd18845262a582a67c832bed06a8ec29bbb03b112d9eb8170b27bb65b8235c2dc0d32c6bffa5cdcd97ad4edd007d3e58f699ae18ba6a
SSDEEP

6144:UTlnPMLbcIcgpaGIIfQs9TJ2NL8XjGciS6YpePZ+qAJVaTJtROhxxpeTr/ekI:elEcIcuaGIIf99I8zGciMkPZ+/YJKzxo

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/4932-2-0x0000000000560000-0x00000000005A8000-memory.dmp	family_onlylogger
behavioral2/memory/4932-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4932-4-0x0000000000400000-0x000000000046C000-memory.dmp	family_onlylogger
behavioral2/memory/4932-5-0x0000000000560000-0x00000000005A8000-memory.dmp	family_onlylogger
behavioral2/memory/4932-6-0x0000000000400000-0x000000000044C000-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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	ef785714c6502ab3b553733b332e0be6_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
2200	4932	WerFault.exe	81
3208	4932	WerFault.exe	81
2664	4932	WerFault.exe	81
228	4932	WerFault.exe	81
3824	4932	WerFault.exe	81
2520	4932	WerFault.exe	81
1216	4932	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	ef785714c6502ab3b553733b332e0be6_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
2656	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 5040	4932	ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe	100
PID 4932 wrote to memory of 5040	4932	ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe	100
PID 4932 wrote to memory of 5040	4932	ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe	100
PID 5040 wrote to memory of 2656	5040	cmd.exe	104
PID 5040 wrote to memory of 2656	5040	cmd.exe	104
PID 5040 wrote to memory of 2656	5040	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 688
  2⤵
  - Program crash
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 724
  2⤵
  - Program crash
  PID:3208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 940
  2⤵
  - Program crash
  PID:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 772
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 972
  2⤵
  - Program crash
  PID:3824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 988
  2⤵
  - Program crash
  PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5040
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "ef785714c6502ab3b553733b332e0be6_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 732
  2⤵
  - Program crash
  PID:1216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4932 -ip 4932
1⤵
PID:1944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4932 -ip 4932
1⤵
PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4932 -ip 4932
1⤵
PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4932 -ip 4932
1⤵
PID:3804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4932 -ip 4932
1⤵
PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4932 -ip 4932
1⤵
PID:2128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4932 -ip 4932
1⤵
PID:4644

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/4932-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/4932-2-0x0000000000560000-0x00000000005A8000-memory.dmp

Filesize
288KB

Download
memory/4932-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4932-4-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4932-5-0x0000000000560000-0x00000000005A8000-memory.dmp

Filesize
288KB

Download
memory/4932-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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