gcleaner | 33125c43c57501269f3f99dcfb7881b2a173b93b326c6d1c426a9701c5d93fdb

General

Target

JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe
Size

434KB
MD5

3044c8b2cebe82faf81138a2471b62ef
SHA1

a4358ade6e71e1a155fdec5a1bbdb72af73b2851
SHA256

33125c43c57501269f3f99dcfb7881b2a173b93b326c6d1c426a9701c5d93fdb
SHA512

b324b0b001f5f8ccd0193cb8fe60571aafd5cce66ef6dcd308329249b95370cb487f89109a2114dd491e4a6a1e444e3b6058248250b329b9655c2a870f3307cb
SSDEEP

6144:pMAkZA40pwdwpUL+0lcUEPC2RSGxNeNoxD9LJwJgwuRD7pudbXUvkfd+etH83:pX9bBpU9MK25yNyZdXw2D7paEvS8

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/3332-2-0x00000000008F0000-0x0000000000939000-memory.dmp	family_onlylogger
behavioral2/memory/3332-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3332-5-0x00000000008F0000-0x0000000000939000-memory.dmp	family_onlylogger
behavioral2/memory/3332-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3332-4-0x0000000000400000-0x000000000089C000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.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
696	3332	WerFault.exe	82
2632	3332	WerFault.exe	82
2524	3332	WerFault.exe	82
1144	3332	WerFault.exe	82
2948	3332	WerFault.exe	82
4808	3332	WerFault.exe	82
2556	3332	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_3044c8b2cebe82faf81138a2471b62ef.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
1380	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1380	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3332 wrote to memory of 4928	3332	JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe	96
PID 3332 wrote to memory of 4928	3332	JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe	96
PID 3332 wrote to memory of 4928	3332	JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe	96
PID 4928 wrote to memory of 1380	4928	cmd.exe	100
PID 4928 wrote to memory of 1380	4928	cmd.exe	100
PID 4928 wrote to memory of 1380	4928	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 696
  2⤵
  - Program crash
  PID:696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 768
  2⤵
  - Program crash
  PID:2632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 772
  2⤵
  - Program crash
  PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 788
  2⤵
  - Program crash
  PID:1144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 796
  2⤵
  - Program crash
  PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 976
  2⤵
  - Program crash
  PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4928
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_3044c8b2cebe82faf81138a2471b62ef.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 728
  2⤵
  - Program crash
  PID:2556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3332 -ip 3332
1⤵
PID:3448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3332 -ip 3332
1⤵
PID:1128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3332 -ip 3332
1⤵
PID:4700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3332 -ip 3332
1⤵
PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3332 -ip 3332
1⤵
PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3332 -ip 3332
1⤵
PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3332 -ip 3332
1⤵
PID:5084

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/3332-1-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download
memory/3332-2-0x00000000008F0000-0x0000000000939000-memory.dmp

Filesize
292KB

Download
memory/3332-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3332-5-0x00000000008F0000-0x0000000000939000-memory.dmp

Filesize
292KB

Download
memory/3332-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3332-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download

Analysis

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