gcleaner | 4d5988f0d3cdd48d7a3abe9ba00050c1f598333c6e2bbccc4985ccef70280d02

General

Target
8cb361536b4a8914ed59b0745cd62d74.exe
Size 375KB
Sample240203-s147fscgb4
SHA256 4d5988f0d3cdd48d7a3abe9ba00050c1f598333c6e2bbccc4985ccef70280d02
MD5 8cb361536b4a8914ed59b0745cd62d74
SHA1 780ec74e1706cd7d12607b66849bed6bc2c14095
SHA512 d3698075f72146d86e25cf992913006cf8f48ac3bfaf60f37813b49cb72b3dd5fa529ebe547465b34663e23f99a99cadd59263ccb765e0f19724254da6603589
SSDEEP 6144:U0kRqCgK40Mux5e72W+scg8L0wFYFTOerg0tR7KZlD0DPzX:ORqCgp0Mua7cscg8A1EMtRuZlgDbX
MD5 SHA1 SHA512 SSDEEP

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/1112-2-0x0000000003FE0000-0x0000000004029000-memory.dmp	family_onlylogger
behavioral2/memory/1112-3-0x0000000000400000-0x00000000023C9000-memory.dmp	family_onlylogger
behavioral2/memory/1112-5-0x0000000000400000-0x00000000023C9000-memory.dmp	family_onlylogger
behavioral2/memory/1112-6-0x0000000003FE0000-0x0000000004029000-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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	8cb361536b4a8914ed59b0745cd62d74.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
2980	1112	WerFault.exe	83
384	1112	WerFault.exe	83
5048	1112	WerFault.exe	83
4068	1112	WerFault.exe	83
3308	1112	WerFault.exe	83
2604	1112	WerFault.exe	83
4972	1112	WerFault.exe	83
4360	1112	WerFault.exe	83

Kills process with taskkill 1 IoCs

evasion

pid	Process
3664	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3664	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 3444	1112	8cb361536b4a8914ed59b0745cd62d74.exe	106
PID 1112 wrote to memory of 3444	1112	8cb361536b4a8914ed59b0745cd62d74.exe	106
PID 1112 wrote to memory of 3444	1112	8cb361536b4a8914ed59b0745cd62d74.exe	106
PID 3444 wrote to memory of 3664	3444	cmd.exe	110
PID 3444 wrote to memory of 3664	3444	cmd.exe	110
PID 3444 wrote to memory of 3664	3444	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\8cb361536b4a8914ed59b0745cd62d74.exe
"C:\Users\Admin\AppData\Local\Temp\8cb361536b4a8914ed59b0745cd62d74.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 720
  2⤵
  - Program crash
  PID:2980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 784
  2⤵
  - Program crash
  PID:384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 792
  2⤵
  - Program crash
  PID:5048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 936
  2⤵
  - Program crash
  PID:4068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 976
  2⤵
  - Program crash
  PID:3308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 976
  2⤵
  - Program crash
  PID:2604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 948
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8cb361536b4a8914ed59b0745cd62d74.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8cb361536b4a8914ed59b0745cd62d74.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3444
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8cb361536b4a8914ed59b0745cd62d74.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 1032
  2⤵
  - Program crash
  PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1112 -ip 1112
1⤵
PID:1492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1112 -ip 1112
1⤵
PID:4896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1112 -ip 1112
1⤵
PID:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1112 -ip 1112
1⤵
PID:4160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1112 -ip 1112
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1112 -ip 1112
1⤵
PID:3104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1112 -ip 1112
1⤵
PID:2324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1112 -ip 1112
1⤵
PID:3756

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

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Downloads

memory/1112-1-0x00000000023D0000-0x00000000024D0000-memory.dmp

Download

memory/1112-2-0x0000000003FE0000-0x0000000004029000-memory.dmp

Download

memory/1112-3-0x0000000000400000-0x00000000023C9000-memory.dmp

Download

memory/1112-5-0x0000000000400000-0x00000000023C9000-memory.dmp

Download

memory/1112-6-0x0000000003FE0000-0x0000000004029000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads