gcleaner | 9cfdc5f11ab2c97fd116b930b1e20d51ecb607efdbbb106811bdfb3288a0b82a

General

Target
37a99217fd1c1d002506c4bb8cc8bc8e.exe
Size 398KB
Sample230123-xdg6maef99
SHA256 9cfdc5f11ab2c97fd116b930b1e20d51ecb607efdbbb106811bdfb3288a0b82a
MD5 37a99217fd1c1d002506c4bb8cc8bc8e
SHA1 89e2405df89889129a279efa86894e711ea37f57
SHA512 c549ca55474945ebb442dc65c1701bacb0639a8dc6ef4bc15e2e7ad47de1f5f22a4ee12a5afeec0dfab8b5b7e0a0acd374de44c91fcd6aa5385a53008468be76
SSDEEP 6144:zmLeVjjs7ExFE1qcrYJclWdT9z59dDLOtQK/fu1d0amTbV:zmiVXUExmYJXdDytQKXu1J
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56
45.12.253.72
45.12.253.98
45.12.253.75

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	37a99217fd1c1d002506c4bb8cc8bc8e.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3208	812	WerFault.exe	80
3700	812	WerFault.exe	80
4944	812	WerFault.exe	80
4824	812	WerFault.exe	80
4700	812	WerFault.exe	80
1256	812	WerFault.exe	80
1128	812	WerFault.exe	80
1388	812	WerFault.exe	80
4428	812	WerFault.exe	80
3196	812	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
4248	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 836	812	37a99217fd1c1d002506c4bb8cc8bc8e.exe	107
PID 812 wrote to memory of 836	812	37a99217fd1c1d002506c4bb8cc8bc8e.exe	107
PID 812 wrote to memory of 836	812	37a99217fd1c1d002506c4bb8cc8bc8e.exe	107
PID 836 wrote to memory of 4248	836	cmd.exe	110
PID 836 wrote to memory of 4248	836	cmd.exe	110
PID 836 wrote to memory of 4248	836	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe
"C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 456
  2⤵
  - Program crash
  PID:3208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 772
  2⤵
  - Program crash
  PID:3700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 808
  2⤵
  - Program crash
  PID:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 808
  2⤵
  - Program crash
  PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 856
  2⤵
  - Program crash
  PID:4700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 928
  2⤵
  - Program crash
  PID:1256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 936
  2⤵
  - Program crash
  PID:1128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 1044
  2⤵
  - Program crash
  PID:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 1384
  2⤵
  - Program crash
  PID:4428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "37a99217fd1c1d002506c4bb8cc8bc8e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\37a99217fd1c1d002506c4bb8cc8bc8e.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:836
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "37a99217fd1c1d002506c4bb8cc8bc8e.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 1348
  2⤵
  - Program crash
  PID:3196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 812 -ip 812
1⤵
PID:1032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 812 -ip 812
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 812 -ip 812
1⤵
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 812 -ip 812
1⤵
PID:4856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 812 -ip 812
1⤵
PID:4920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 812 -ip 812
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 812 -ip 812
1⤵
PID:1980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 812 -ip 812
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 812 -ip 812
1⤵
PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 812 -ip 812
1⤵
PID:4692

Network

MITRE ATT&CK Enterprise v6

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/812-132-0x000000000054D000-0x0000000000574000-memory.dmp

Download

memory/812-133-0x00000000004F0000-0x0000000000530000-memory.dmp

Download

memory/812-134-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/812-135-0x000000000054D000-0x0000000000574000-memory.dmp

Download

memory/812-136-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/812-139-0x000000000054D000-0x0000000000574000-memory.dmp

Download

memory/812-140-0x0000000000400000-0x000000000046B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads