gcleaner | f86e0b6a25979857689621f97e1e5f922184951e3461738869756b0228552e5a

General

Target

JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe
Size

434KB
MD5

5144211e10e4f1d9d37f2d4db73a4905
SHA1

1eb0bbefb50adbd8e715ba489f29ebd1a2bff26e
SHA256

f86e0b6a25979857689621f97e1e5f922184951e3461738869756b0228552e5a
SHA512

84d5d8af932d2e82ad774593fd931cd58fa39c33aca29fae590da1ea02442d7f29ce4cc45000fc4b3532f1981977b58a7a755b07a87bd74389857f568992e46a
SSDEEP

12288:zzI8cv58+wGnt8MWn03argrhMqoI8brrCP1buwr:zkHhWGntq0XD8vrCNiG

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/2624-2-0x0000000000D20000-0x0000000000D69000-memory.dmp	family_onlylogger
behavioral2/memory/2624-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2624-5-0x0000000000D20000-0x0000000000D69000-memory.dmp	family_onlylogger
behavioral2/memory/2624-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2624-4-0x0000000000400000-0x000000000089C000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.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
2516	2624	WerFault.exe	81
5000	2624	WerFault.exe	81
4232	2624	WerFault.exe	81
3076	2624	WerFault.exe	81
4164	2624	WerFault.exe	81
4940	2624	WerFault.exe	81
2904	2624	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_5144211e10e4f1d9d37f2d4db73a4905.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
4840	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 3996	2624	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	95
PID 2624 wrote to memory of 3996	2624	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	95
PID 2624 wrote to memory of 3996	2624	JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe	95
PID 3996 wrote to memory of 4840	3996	cmd.exe	99
PID 3996 wrote to memory of 4840	3996	cmd.exe	99
PID 3996 wrote to memory of 4840	3996	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 716
  2⤵
  - Program crash
  PID:2516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 784
  2⤵
  - Program crash
  PID:5000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 940
  2⤵
  - Program crash
  PID:4232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 976
  2⤵
  - Program crash
  PID:3076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 976
  2⤵
  - Program crash
  PID:4164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 1012
  2⤵
  - Program crash
  PID:4940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3996
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_5144211e10e4f1d9d37f2d4db73a4905.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2624 -s 1128
  2⤵
  - Program crash
  PID:2904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2624 -ip 2624
1⤵
PID:3572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2624 -ip 2624
1⤵
PID:3224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2624 -ip 2624
1⤵
PID:1224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2624 -ip 2624
1⤵
PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2624 -ip 2624
1⤵
PID:624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2624 -ip 2624
1⤵
PID:2256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2624 -ip 2624
1⤵
PID:4836

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/2624-1-0x0000000000950000-0x0000000000A50000-memory.dmp

Filesize
1024KB

Download
memory/2624-2-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download
memory/2624-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2624-5-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download
memory/2624-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2624-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download

Analysis

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