gcleaner | a8a39400f62a9033bc9c447cca7c5b69a66555fbfe5913a5d773503d9f1cad9b

General

Target

JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe
Size

433KB
MD5

2ea682eee8468fdee8f1361934625225
SHA1

264c0d6f5722df8f4480ffd14a89ea8a982bfe3e
SHA256

a8a39400f62a9033bc9c447cca7c5b69a66555fbfe5913a5d773503d9f1cad9b
SHA512

d17b8c12b52b970b0295339b8348820743f4729adbd8101b06dbd307b307ecb550778d22a88393cccf2a8e36f822af1319a050ff8c8ba4042a2cd765bb1cfdc4
SSDEEP

12288:vbRN4YywAwR2TlHAqNiw18kPKlGR0zp4U:v9N4/wR2hDekPcGR8

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/2312-2-0x0000000000A30000-0x0000000000A79000-memory.dmp	family_onlylogger
behavioral2/memory/2312-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2312-5-0x0000000000A30000-0x0000000000A79000-memory.dmp	family_onlylogger
behavioral2/memory/2312-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2312-4-0x0000000000400000-0x000000000089B000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2ea682eee8468fdee8f1361934625225.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
3660	2312	WerFault.exe	82
4284	2312	WerFault.exe	82
4200	2312	WerFault.exe	82
4532	2312	WerFault.exe	82
3912	2312	WerFault.exe	82
4304	2312	WerFault.exe	82
3252	2312	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_2ea682eee8468fdee8f1361934625225.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
4884	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4884	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 1836	2312	JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe	96
PID 2312 wrote to memory of 1836	2312	JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe	96
PID 2312 wrote to memory of 1836	2312	JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe	96
PID 1836 wrote to memory of 4884	1836	cmd.exe	100
PID 1836 wrote to memory of 4884	1836	cmd.exe	100
PID 1836 wrote to memory of 4884	1836	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 736
  2⤵
  - Program crash
  PID:3660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 716
  2⤵
  - Program crash
  PID:4284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 748
  2⤵
  - Program crash
  PID:4200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 932
  2⤵
  - Program crash
  PID:4532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 932
  2⤵
  - Program crash
  PID:3912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 984
  2⤵
  - Program crash
  PID:4304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_2ea682eee8468fdee8f1361934625225.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2312 -s 1128
  2⤵
  - Program crash
  PID:3252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2312 -ip 2312
1⤵
PID:1556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2312 -ip 2312
1⤵
PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2312 -ip 2312
1⤵
PID:3228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2312 -ip 2312
1⤵
PID:2244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2312 -ip 2312
1⤵
PID:4420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2312 -ip 2312
1⤵
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2312 -ip 2312
1⤵
PID:4560

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/2312-1-0x0000000000B00000-0x0000000000C00000-memory.dmp

Filesize
1024KB

Download
memory/2312-2-0x0000000000A30000-0x0000000000A79000-memory.dmp

Filesize
292KB

Download
memory/2312-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2312-5-0x0000000000A30000-0x0000000000A79000-memory.dmp

Filesize
292KB

Download
memory/2312-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2312-4-0x0000000000400000-0x000000000089B000-memory.dmp

Filesize
4.6MB

Download

Analysis

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