gcleaner | 9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9

General

Target

9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe
Size

431KB
MD5

89d3e2b5bec6b8da8fc326719ead4f4d
SHA1

daae4c3523ccadd14a15ed489142131a53da0940
SHA256

9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9
SHA512

cc49ebb4731c0d4fada38fef76410e6bf484fd48bde3922d1fe95917451bf907de0fe5230d6ec6ff84a4baacdf3f1a653d8cef1ca371763bbd3c636c5f4834ff
SSDEEP

12288:6aBNfc0nKmROQCOkj7+fLdumr9miXhDjZ1E:Rj0MxRlC765umpth4

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/1716-2-0x0000000002FC0000-0x0000000003009000-memory.dmp	family_onlylogger
behavioral2/memory/1716-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/1716-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/1716-5-0x0000000002FC0000-0x0000000003009000-memory.dmp	family_onlylogger
behavioral2/memory/1716-4-0x0000000000400000-0x0000000002DC3000-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	9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.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
1132	1716	WerFault.exe	82
2156	1716	WerFault.exe	82
1872	1716	WerFault.exe	82
1044	1716	WerFault.exe	82
3384	1716	WerFault.exe	82
2448	1716	WerFault.exe	82
3952	1716	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	9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.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
3856	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3856	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 4556	1716	9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe	96
PID 1716 wrote to memory of 4556	1716	9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe	96
PID 1716 wrote to memory of 4556	1716	9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe	96
PID 4556 wrote to memory of 3856	4556	cmd.exe	100
PID 4556 wrote to memory of 3856	4556	cmd.exe	100
PID 4556 wrote to memory of 3856	4556	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe
"C:\Users\Admin\AppData\Local\Temp\9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 756
  2⤵
  - Program crash
  PID:1132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 756
  2⤵
  - Program crash
  PID:2156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 920
  2⤵
  - Program crash
  PID:1872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 952
  2⤵
  - Program crash
  PID:1044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 948
  2⤵
  - Program crash
  PID:3384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 964
  2⤵
  - Program crash
  PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9e03c3d15e441a6973948ecc552f7e38a013827782458f10b7bc78c11532a6d9.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1716 -s 1004
  2⤵
  - Program crash
  PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1716 -ip 1716
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1716 -ip 1716
1⤵
PID:1348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1716 -ip 1716
1⤵
PID:2840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1716 -ip 1716
1⤵
PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1716 -ip 1716
1⤵
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1716 -ip 1716
1⤵
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1716 -ip 1716
1⤵
PID:3956

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/1716-1-0x0000000002EC0000-0x0000000002FC0000-memory.dmp

Filesize
1024KB

Download
memory/1716-2-0x0000000002FC0000-0x0000000003009000-memory.dmp

Filesize
292KB

Download
memory/1716-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1716-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1716-5-0x0000000002FC0000-0x0000000003009000-memory.dmp

Filesize
292KB

Download
memory/1716-4-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

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