gcleaner | 3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd

General

Target

JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe
Size

434KB
MD5

660f957f13470d2f9c34713c192920b2
SHA1

07998033267d6a0c8cc6a562c78d9caadaafa918
SHA256

3d3747aa4e6eb4782c1ae5bcb22b736cce54a41a810cd571f9b7eaa34896e9dd
SHA512

7c09911d02ad0d8e05615b80cf228c186b319177beea26e899d5e054f2f35c42187f37b7a5a3d567e3663505aae39f1de274b3be86b1ccf22df2df168ac162cd
SSDEEP

12288:sAo36NmWywy2hqZkuR2eNNhcXwxI7kYEKJFw:sDimTZHcwe7kDqFw

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/628-2-0x0000000000A90000-0x0000000000AD9000-memory.dmp	family_onlylogger
behavioral2/memory/628-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/628-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/628-5-0x0000000000A90000-0x0000000000AD9000-memory.dmp	family_onlylogger
behavioral2/memory/628-4-0x0000000000400000-0x000000000089C000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_660f957f13470d2f9c34713c192920b2.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
1260	628	WerFault.exe	83
2384	628	WerFault.exe	83
3260	628	WerFault.exe	83
3388	628	WerFault.exe	83
4320	628	WerFault.exe	83
5084	628	WerFault.exe	83
3060	628	WerFault.exe	83

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_660f957f13470d2f9c34713c192920b2.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
1932	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1960	628	JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe	97
PID 628 wrote to memory of 1960	628	JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe	97
PID 628 wrote to memory of 1960	628	JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe	97
PID 1960 wrote to memory of 1932	1960	cmd.exe	101
PID 1960 wrote to memory of 1932	1960	cmd.exe	101
PID 1960 wrote to memory of 1932	1960	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 712
  2⤵
  - Program crash
  PID:1260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 784
  2⤵
  - Program crash
  PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 792
  2⤵
  - Program crash
  PID:3260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 936
  2⤵
  - Program crash
  PID:3388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 940
  2⤵
  - Program crash
  PID:4320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 948
  2⤵
  - Program crash
  PID:5084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_660f957f13470d2f9c34713c192920b2.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 980
  2⤵
  - Program crash
  PID:3060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 628 -ip 628
1⤵
PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 628 -ip 628
1⤵
PID:1828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 628 -ip 628
1⤵
PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 628 -ip 628
1⤵
PID:4348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 628 -ip 628
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 628 -ip 628
1⤵
PID:4584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 628 -ip 628
1⤵
PID:2032

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/628-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download
memory/628-2-0x0000000000A90000-0x0000000000AD9000-memory.dmp

Filesize
292KB

Download
memory/628-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/628-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/628-5-0x0000000000A90000-0x0000000000AD9000-memory.dmp

Filesize
292KB

Download
memory/628-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download

Analysis

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