gcleaner | 95d29ef06b4fd4e882b341fb142b880179e79d20f643fcf8c9d8e15693be1833

General

Target

JaffaCakes118_824846740481f400d9759e7f4694d869.exe
Size

431KB
MD5

824846740481f400d9759e7f4694d869
SHA1

a4ed2d684bb544929a4318d7883419cd7bcd1632
SHA256

95d29ef06b4fd4e882b341fb142b880179e79d20f643fcf8c9d8e15693be1833
SHA512

b4e1a815ba7096d8f40b493fa678eba3a1f4754aed5f2d35edb549f20162d4b2003e88868d38fa017bea31dc927bc7bf2f0ab9fa6338dbaec7e1cbff61b0d783
SSDEEP

12288:6aBNfc0nKmROQCOkj7+fLdumr9miXhDjZ1:Rj0MxRlC765umpth

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/4016-2-0x0000000002DD0000-0x0000000002E19000-memory.dmp	family_onlylogger
behavioral2/memory/4016-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4016-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4016-5-0x0000000002DD0000-0x0000000002E19000-memory.dmp	family_onlylogger
behavioral2/memory/4016-4-0x0000000000400000-0x0000000002DC3000-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	JaffaCakes118_824846740481f400d9759e7f4694d869.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
3828	4016	WerFault.exe	81
1488	4016	WerFault.exe	81
4904	4016	WerFault.exe	81
2608	4016	WerFault.exe	81
2036	4016	WerFault.exe	81
3040	4016	WerFault.exe	81
2892	4016	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_824846740481f400d9759e7f4694d869.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
1572	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1572	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 1432	4016	JaffaCakes118_824846740481f400d9759e7f4694d869.exe	95
PID 4016 wrote to memory of 1432	4016	JaffaCakes118_824846740481f400d9759e7f4694d869.exe	95
PID 4016 wrote to memory of 1432	4016	JaffaCakes118_824846740481f400d9759e7f4694d869.exe	95
PID 1432 wrote to memory of 1572	1432	cmd.exe	99
PID 1432 wrote to memory of 1572	1432	cmd.exe	99
PID 1432 wrote to memory of 1572	1432	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_824846740481f400d9759e7f4694d869.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_824846740481f400d9759e7f4694d869.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 736
  2⤵
  - Program crash
  PID:3828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 784
  2⤵
  - Program crash
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 944
  2⤵
  - Program crash
  PID:4904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 776
  2⤵
  - Program crash
  PID:2608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 776
  2⤵
  - Program crash
  PID:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 784
  2⤵
  - Program crash
  PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_824846740481f400d9759e7f4694d869.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_824846740481f400d9759e7f4694d869.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1432
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_824846740481f400d9759e7f4694d869.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 984
  2⤵
  - Program crash
  PID:2892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4016 -ip 4016
1⤵
PID:1456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4016 -ip 4016
1⤵
PID:3320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4016 -ip 4016
1⤵
PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4016 -ip 4016
1⤵
PID:4756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4016 -ip 4016
1⤵
PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4016 -ip 4016
1⤵
PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4016 -ip 4016
1⤵
PID:4220

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/4016-1-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/4016-2-0x0000000002DD0000-0x0000000002E19000-memory.dmp

Filesize
292KB

Download
memory/4016-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4016-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4016-5-0x0000000002DD0000-0x0000000002E19000-memory.dmp

Filesize
292KB

Download
memory/4016-4-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

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