gcleaner | 29fc9e60d4b92944739c3cef4ad4bb781d4ef4549c1f49a2d33e940bd0f6c62d

General

Target

JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe
Size

444KB
MD5

6a52bc5eb7167b1b9388750a87a37459
SHA1

08eee7cd20b0bb9d1097357a8bcc877be72c6010
SHA256

29fc9e60d4b92944739c3cef4ad4bb781d4ef4549c1f49a2d33e940bd0f6c62d
SHA512

e3155809ded9a013f7388650a0be5cd2a02d5286287fadaf541aea89926cef68ec0167dd6bdb28634c098c91b7bab3908960ff4eef6efd8b97508f955d05c376
SSDEEP

12288:efdgTBtlvcWmxZ1S9nTQD6erx3fuwBdCnkNTDevWh:eFg9tcXS9cxPuJnkZD

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/1160-2-0x0000000000960000-0x00000000009A9000-memory.dmp	family_onlylogger
behavioral2/memory/1160-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/1160-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/1160-4-0x0000000000400000-0x000000000089E000-memory.dmp	family_onlylogger
behavioral2/memory/1160-5-0x0000000000960000-0x00000000009A9000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.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
2744	1160	WerFault.exe	82
980	1160	WerFault.exe	82
3020	1160	WerFault.exe	82
5028	1160	WerFault.exe	82
2012	1160	WerFault.exe	82
548	1160	WerFault.exe	82
976	1160	WerFault.exe	82

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_6a52bc5eb7167b1b9388750a87a37459.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
2792	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 3540	1160	JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe	96
PID 1160 wrote to memory of 3540	1160	JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe	96
PID 1160 wrote to memory of 3540	1160	JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe	96
PID 3540 wrote to memory of 2792	3540	cmd.exe	100
PID 3540 wrote to memory of 2792	3540	cmd.exe	100
PID 3540 wrote to memory of 2792	3540	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 728
  2⤵
  - Program crash
  PID:2744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 816
  2⤵
  - Program crash
  PID:980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 960
  2⤵
  - Program crash
  PID:3020
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 968
  2⤵
  - Program crash
  PID:5028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 988
  2⤵
  - Program crash
  PID:2012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 996
  2⤵
  - Program crash
  PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3540
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_6a52bc5eb7167b1b9388750a87a37459.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1160 -s 984
  2⤵
  - Program crash
  PID:976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1160 -ip 1160
1⤵
PID:2412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1160 -ip 1160
1⤵
PID:5084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1160 -ip 1160
1⤵
PID:1812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1160 -ip 1160
1⤵
PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1160 -ip 1160
1⤵
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1160 -ip 1160
1⤵
PID:4148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1160 -ip 1160
1⤵
PID:2832

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/1160-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/1160-2-0x0000000000960000-0x00000000009A9000-memory.dmp

Filesize
292KB

Download
memory/1160-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1160-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1160-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download
memory/1160-5-0x0000000000960000-0x00000000009A9000-memory.dmp

Filesize
292KB

Download

Analysis

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