gcleaner | 60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2

General

Target

60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe
Size

434KB
MD5

658f5cc491e8dfa795631aaec4d413c6
SHA1

369afb0cd235845a682abaaa7c0dd28f6dafaf3b
SHA256

60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2
SHA512

eae0511ade4786db99dda64226b40583c9ad0a46018f64f8148e155a3e0974135a92595efd0884e2727a90f146398e1c6e085fad4935de2dbde22c88c4fbc876
SSDEEP

12288:zzI8cv58+wGnt8MWn03argrhMqoI8brrCP1buwrC:zkHhWGntq0XD8vrCNiGC

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/3036-2-0x0000000000D20000-0x0000000000D69000-memory.dmp	family_onlylogger
behavioral2/memory/3036-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3036-4-0x0000000000400000-0x000000000089C000-memory.dmp	family_onlylogger
behavioral2/memory/3036-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_onlylogger
behavioral2/memory/3036-5-0x0000000000D20000-0x0000000000D69000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.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
832	3036	WerFault.exe	81
2740	3036	WerFault.exe	81
1088	3036	WerFault.exe	81
4372	3036	WerFault.exe	81
996	3036	WerFault.exe	81
1384	3036	WerFault.exe	81
5036	3036	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	60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.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
5008	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5008	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 5112	3036	60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe	95
PID 3036 wrote to memory of 5112	3036	60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe	95
PID 3036 wrote to memory of 5112	3036	60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe	95
PID 5112 wrote to memory of 5008	5112	cmd.exe	99
PID 5112 wrote to memory of 5008	5112	cmd.exe	99
PID 5112 wrote to memory of 5008	5112	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe
"C:\Users\Admin\AppData\Local\Temp\60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 728
  2⤵
  - Program crash
  PID:832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 800
  2⤵
  - Program crash
  PID:2740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 936
  2⤵
  - Program crash
  PID:1088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 796
  2⤵
  - Program crash
  PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 796
  2⤵
  - Program crash
  PID:996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 976
  2⤵
  - Program crash
  PID:1384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5112
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "60b5b44e2f4b3f0ac140cfeb211bfb5db10451ca4e4f22c20b529064753e05c2.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 760
  2⤵
  - Program crash
  PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3036 -ip 3036
1⤵
PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3036 -ip 3036
1⤵
PID:2504

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3036 -ip 3036
1⤵
PID:4680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3036 -ip 3036
1⤵
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3036 -ip 3036
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3036 -ip 3036
1⤵
PID:3680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3036 -ip 3036
1⤵
PID:232

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/3036-2-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download
memory/3036-1-0x0000000000B20000-0x0000000000C20000-memory.dmp

Filesize
1024KB

Download
memory/3036-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3036-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/3036-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3036-5-0x0000000000D20000-0x0000000000D69000-memory.dmp

Filesize
292KB

Download

Analysis

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