gcleaner | 1f33ed4af1d7f3ecf6c30b85c6183ca62254924888d44a5f1fccaed57be90616

General

Target

aacb56be73f8c1dfbfc9f9420b6f33e6.exe
Size

378KB
MD5

aacb56be73f8c1dfbfc9f9420b6f33e6
SHA1

0a20c05858fa72ca784312761716587a16539f85
SHA256

1f33ed4af1d7f3ecf6c30b85c6183ca62254924888d44a5f1fccaed57be90616
SHA512

9917c88312f151f6540c818eb971d716f9a3879c47364240ffee660c495ff9684883696561b262fcafba2fe4a3adc89233ff74eb3e1d25ff37ee6608c1bca620
SSDEEP

6144:qWRJsaINHBYhJ/QBrqfUjj1EP3b/yqEfqHK8ib4eVhAvckGzV:fCaoHShOBufc5CbaEK8ib4MkeV

Score

10^/10

gcleaner onlylogger vidar loader stealer

Malware Config

Extracted

Family

gcleaner

C2

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
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar

OnlyLogger payload 4 IoCs

resource	yara_rule
behavioral2/memory/4404-2-0x0000000002670000-0x00000000026B9000-memory.dmp	family_onlylogger
behavioral2/memory/4404-3-0x0000000000400000-0x00000000023C9000-memory.dmp	family_onlylogger
behavioral2/memory/4404-4-0x0000000000400000-0x00000000023C9000-memory.dmp	family_onlylogger
behavioral2/memory/4404-5-0x0000000002670000-0x00000000026B9000-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	aacb56be73f8c1dfbfc9f9420b6f33e6.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
4008	4404	WerFault.exe	79
3576	4404	WerFault.exe	79
1004	4404	WerFault.exe	79
404	4404	WerFault.exe	79
4532	4404	WerFault.exe	79
2152	4404	WerFault.exe	79
3208	4404	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
2768	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 1472	4404	aacb56be73f8c1dfbfc9f9420b6f33e6.exe	107
PID 4404 wrote to memory of 1472	4404	aacb56be73f8c1dfbfc9f9420b6f33e6.exe	107
PID 4404 wrote to memory of 1472	4404	aacb56be73f8c1dfbfc9f9420b6f33e6.exe	107
PID 1472 wrote to memory of 2768	1472	cmd.exe	111
PID 1472 wrote to memory of 2768	1472	cmd.exe	111
PID 1472 wrote to memory of 2768	1472	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\aacb56be73f8c1dfbfc9f9420b6f33e6.exe
"C:\Users\Admin\AppData\Local\Temp\aacb56be73f8c1dfbfc9f9420b6f33e6.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 736
  2⤵
  - Program crash
  PID:4008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 772
  2⤵
  - Program crash
  PID:3576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 940
  2⤵
  - Program crash
  PID:1004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 792
  2⤵
  - Program crash
  PID:404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 784
  2⤵
  - Program crash
  PID:4532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 988
  2⤵
  - Program crash
  PID:2152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "aacb56be73f8c1dfbfc9f9420b6f33e6.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\aacb56be73f8c1dfbfc9f9420b6f33e6.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1472
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "aacb56be73f8c1dfbfc9f9420b6f33e6.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 712
  2⤵
  - Program crash
  PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4404 -ip 4404
1⤵
PID:2984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4404 -ip 4404
1⤵
PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4404 -ip 4404
1⤵
PID:1096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4404 -ip 4404
1⤵
PID:1220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4404 -ip 4404
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4404 -ip 4404
1⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4404 -ip 4404
1⤵
PID:532

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4404-1-0x0000000002700000-0x0000000002800000-memory.dmp

Filesize
1024KB

Download
memory/4404-2-0x0000000002670000-0x00000000026B9000-memory.dmp

Filesize
292KB

Download
memory/4404-3-0x0000000000400000-0x00000000023C9000-memory.dmp

Filesize
31.8MB

Download
memory/4404-4-0x0000000000400000-0x00000000023C9000-memory.dmp

Filesize
31.8MB

Download
memory/4404-5-0x0000000002670000-0x00000000026B9000-memory.dmp

Filesize
292KB

Download

Analysis

Sharing