gcleaner | 1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100

General

Target

1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe
Size

444KB
MD5

0c00f89b8e87f3677c63957f73fa04c6
SHA1

e6fe715ad8bbec891a148f8b3dc15ac36e015dfb
SHA256

1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100
SHA512

d9bee8b7185271c7a8db4de6acf364a59b66fd5f2892a4dc358ca61f1da88dfbbb3d97d5e528c2aca17fcff37990f75d76c1ab72f68bc13499ecdf888f460fd4
SSDEEP

12288:jydTPaHeEs1JnOWYHU5YxA78uAtd44m1UDajcKaqX:jOTPaHeE8OWXIuj4m2DcaqX

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/4068-2-0x0000000000D20000-0x0000000000D69000-memory.dmp	family_onlylogger
behavioral2/memory/4068-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4068-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/4068-4-0x0000000000400000-0x000000000089E000-memory.dmp	family_onlylogger
behavioral2/memory/4068-5-0x0000000000D20000-0x0000000000D69000-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	1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.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
4152	4068	WerFault.exe	81
2168	4068	WerFault.exe	81
4260	4068	WerFault.exe	81
5036	4068	WerFault.exe	81
4936	4068	WerFault.exe	81
1612	4068	WerFault.exe	81
3832	4068	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	1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.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
3280	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3280	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 3360	4068	1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe	95
PID 4068 wrote to memory of 3360	4068	1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe	95
PID 4068 wrote to memory of 3360	4068	1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe	95
PID 3360 wrote to memory of 3280	3360	cmd.exe	98
PID 3360 wrote to memory of 3280	3360	cmd.exe	98
PID 3360 wrote to memory of 3280	3360	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe
"C:\Users\Admin\AppData\Local\Temp\1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 744
  2⤵
  - Program crash
  PID:4152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 804
  2⤵
  - Program crash
  PID:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 940
  2⤵
  - Program crash
  PID:4260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 800
  2⤵
  - Program crash
  PID:5036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 800
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 940
  2⤵
  - Program crash
  PID:1612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3360
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "1d818366c5492865f1b19fe56f804aa994f13ea8ccc5896518e3ef275dcba100.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 980
  2⤵
  - Program crash
  PID:3832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4068 -ip 4068
1⤵
PID:736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4068 -ip 4068
1⤵
PID:980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4068 -ip 4068
1⤵
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4068 -ip 4068
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4068 -ip 4068
1⤵
PID:4504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4068 -ip 4068
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4068 -ip 4068
1⤵
PID:1152

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/4068-1-0x0000000000910000-0x0000000000A10000-memory.dmp

Filesize
1024KB

Download
memory/4068-2-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download
memory/4068-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4068-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4068-4-0x0000000000400000-0x000000000089E000-memory.dmp

Filesize
4.6MB

Download
memory/4068-5-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download

Analysis

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