gcleaner | 090e8bd14dcd133d966ef11bf9ac340e9c55835d9a70c77a211cd15e8540a9a4

General

Target

055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe
Size

337KB
MD5

055e3d97992efa668f7cd92ee301ebf4
SHA1

326fb8c7e9fecb54570fdd9e3ee3165ca68658c9
SHA256

090e8bd14dcd133d966ef11bf9ac340e9c55835d9a70c77a211cd15e8540a9a4
SHA512

b8dc8317d049b4e3290badd6081c0bcadbd6c4a5af232395c96f92933c58da3de90cb846a7c1c707d7f306c547bb658871cfe3c73122ecea91ecb96d185710f8
SSDEEP

6144:8NN9wy0tamsE/6suyzgdygi/T0Yr6cfee3cf/zC:8bOXtamUsuyzGpib0oLfe8c3z

Score

10^/10

gcleaner onlylogger discovery loader

Malware Config

Extracted

Family

gcleaner

C2

gcl-page.biz

194.145.227.161

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
OnlyLogger
A tiny loader that uses IPLogger to get its payload.
loader onlylogger

OnlyLogger payload 5 IoCs

resource	yara_rule
behavioral2/memory/3532-2-0x0000000000890000-0x00000000008D8000-memory.dmp	family_onlylogger
behavioral2/memory/3532-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/3532-5-0x0000000000890000-0x00000000008D8000-memory.dmp	family_onlylogger
behavioral2/memory/3532-6-0x0000000000400000-0x000000000044B000-memory.dmp	family_onlylogger
behavioral2/memory/3532-4-0x0000000000400000-0x0000000000884000-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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.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
1316	3532	WerFault.exe	88
1884	3532	WerFault.exe	88
4820	3532	WerFault.exe	88
1928	3532	WerFault.exe	88
3040	3532	WerFault.exe	88
4584	3532	WerFault.exe	88
4948	3532	WerFault.exe	88

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	055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.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
4728	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 3832	3532	055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe	106
PID 3532 wrote to memory of 3832	3532	055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe	106
PID 3532 wrote to memory of 3832	3532	055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe	106
PID 3832 wrote to memory of 4728	3832	cmd.exe	110
PID 3832 wrote to memory of 4728	3832	cmd.exe	110
PID 3832 wrote to memory of 4728	3832	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 724
  2⤵
  - Program crash
  PID:1316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 784
  2⤵
  - Program crash
  PID:1884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 920
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 932
  2⤵
  - Program crash
  PID:1928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 924
  2⤵
  - Program crash
  PID:3040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 968
  2⤵
  - Program crash
  PID:4584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3832
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "055e3d97992efa668f7cd92ee301ebf4_JaffaCakes118.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 1112
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3532 -ip 3532
1⤵
PID:396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3532 -ip 3532
1⤵
PID:3096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3532 -ip 3532
1⤵
PID:636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3532 -ip 3532
1⤵
PID:2980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3532 -ip 3532
1⤵
PID:2664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3532 -ip 3532
1⤵
PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 3532 -ip 3532
1⤵
PID:2340

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=2540,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=1288 /prefetch:8
1⤵
PID:2420

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/3532-1-0x00000000009F0000-0x0000000000AF0000-memory.dmp

Filesize
1024KB

Download
memory/3532-2-0x0000000000890000-0x00000000008D8000-memory.dmp

Filesize
288KB

Download
memory/3532-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3532-5-0x0000000000890000-0x00000000008D8000-memory.dmp

Filesize
288KB

Download
memory/3532-6-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/3532-4-0x0000000000400000-0x0000000000884000-memory.dmp

Filesize
4.5MB

Download

Analysis

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