gcleaner | a10dea1a440b70d5f62ce3cc1f2dbe665c9e2a8b6293a692946e62b522829124

General

Target

JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe
Size

440KB
MD5

fd10236f59e0f351586cfee4f6c44fe0
SHA1

549703710fe73fdacb48c958ca2d5979d160a9d6
SHA256

a10dea1a440b70d5f62ce3cc1f2dbe665c9e2a8b6293a692946e62b522829124
SHA512

1f0630b97b69d9342df5ef41c6af87640b9fd9545caaf67f70565bac2f6e94e772cc53e1e98dc10057af860d1539c1ac676417c99ffcf46c40ab3428df6dbb88
SSDEEP

6144:RmhQFSEeQ44ZfZUhzwP3v9GPiEtQ5Bak4gSP0srdKcDVcnbY1TWMqfotU:shQavMUhzwP3vxCQ6H/ldf+bYNWTl

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/2712-2-0x0000000002DD0000-0x0000000002E19000-memory.dmp	family_onlylogger
behavioral2/memory/2712-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2712-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/2712-5-0x0000000002DD0000-0x0000000002E19000-memory.dmp	family_onlylogger
behavioral2/memory/2712-4-0x0000000000400000-0x0000000002DC5000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.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
1548	2712	WerFault.exe	81
1132	2712	WerFault.exe	81
2960	2712	WerFault.exe	81
2104	2712	WerFault.exe	81
1256	2712	WerFault.exe	81
3840	2712	WerFault.exe	81
1316	2712	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_fd10236f59e0f351586cfee4f6c44fe0.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
4664	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 3432	2712	JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe	95
PID 2712 wrote to memory of 3432	2712	JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe	95
PID 2712 wrote to memory of 3432	2712	JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe	95
PID 3432 wrote to memory of 4664	3432	cmd.exe	99
PID 3432 wrote to memory of 4664	3432	cmd.exe	99
PID 3432 wrote to memory of 4664	3432	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 740
  2⤵
  - Program crash
  PID:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 740
  2⤵
  - Program crash
  PID:1132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 724
  2⤵
  - Program crash
  PID:2960
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 740
  2⤵
  - Program crash
  PID:2104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 724
  2⤵
  - Program crash
  PID:1256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 748
  2⤵
  - Program crash
  PID:3840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "JaffaCakes118_fd10236f59e0f351586cfee4f6c44fe0.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 1088
  2⤵
  - Program crash
  PID:1316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2712 -ip 2712
1⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2712 -ip 2712
1⤵
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2712 -ip 2712
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2712 -ip 2712
1⤵
PID:3016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2712 -ip 2712
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 2712 -ip 2712
1⤵
PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2712 -ip 2712
1⤵
PID:1876

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/2712-1-0x0000000003010000-0x0000000003110000-memory.dmp

Filesize
1024KB

Download
memory/2712-2-0x0000000002DD0000-0x0000000002E19000-memory.dmp

Filesize
292KB

Download
memory/2712-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2712-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2712-5-0x0000000002DD0000-0x0000000002E19000-memory.dmp

Filesize
292KB

Download
memory/2712-4-0x0000000000400000-0x0000000002DC5000-memory.dmp

Filesize
41.8MB

Download

Analysis

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