gcleaner | 47075f43ae57e74e2c85e4504cd25df4ad290f22da7b7dfd110dcac8f10bf38d

General

Target

JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe
Size

437KB
MD5

bf8a7c8ceb663636e27bc88969e07254
SHA1

4333219aec36dc042c77506dc3d55523315202b8
SHA256

47075f43ae57e74e2c85e4504cd25df4ad290f22da7b7dfd110dcac8f10bf38d
SHA512

96ddd6640a34df5a0ae91c81f94e78e4ab2b42e35c4b7b299ccc5c157711c18140ef9419d2c364584fd11af51c606a141264e6b4ecf1410423e22cc89ec128dc
SSDEEP

6144:YcTpByzxSPvAhDzaHaqePi2ER7xy1MJKuU9uB55LxNtIOp4O+/c6xJ0:/TitUAdI3egy1bV0tF14O+06xS

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/2568-2-0x0000000002EA0000-0x0000000002EE9000-memory.dmp	family_onlylogger
behavioral2/memory/2568-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2568-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2568-5-0x0000000002EA0000-0x0000000002EE9000-memory.dmp	family_onlylogger
behavioral2/memory/2568-4-0x0000000000400000-0x0000000002DC4000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.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
4804	2568	WerFault.exe	81
3120	2568	WerFault.exe	81
2544	2568	WerFault.exe	81
2096	2568	WerFault.exe	81
3636	2568	WerFault.exe	81
2520	2568	WerFault.exe	81
1912	2568	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_bf8a7c8ceb663636e27bc88969e07254.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
4956	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2140	2568	JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe	95
PID 2568 wrote to memory of 2140	2568	JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe	95
PID 2568 wrote to memory of 2140	2568	JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe	95
PID 2140 wrote to memory of 4956	2140	cmd.exe	99
PID 2140 wrote to memory of 4956	2140	cmd.exe	99
PID 2140 wrote to memory of 4956	2140	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 720
  2⤵
  - Program crash
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 784
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 948
  2⤵
  - Program crash
  PID:2544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 956
  2⤵
  - Program crash
  PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 956
  2⤵
  - Program crash
  PID:3636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 944
  2⤵
  - Program crash
  PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_bf8a7c8ceb663636e27bc88969e07254.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2568 -s 920
  2⤵
  - Program crash
  PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2568 -ip 2568
1⤵
PID:320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2568 -ip 2568
1⤵
PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2568 -ip 2568
1⤵
PID:4444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2568 -ip 2568
1⤵
PID:4292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2568 -ip 2568
1⤵
PID:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2568 -ip 2568
1⤵
PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2568 -ip 2568
1⤵
PID:4380

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/2568-1-0x0000000003030000-0x0000000003130000-memory.dmp

Filesize
1024KB

Download
memory/2568-2-0x0000000002EA0000-0x0000000002EE9000-memory.dmp

Filesize
292KB

Download
memory/2568-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2568-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2568-5-0x0000000002EA0000-0x0000000002EE9000-memory.dmp

Filesize
292KB

Download
memory/2568-4-0x0000000000400000-0x0000000002DC4000-memory.dmp

Filesize
41.8MB

Download

Analysis

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