gcleaner | 791f0d1a573d088cb943e4154bc9da5978d28ef17d1ce1e3197a34449319a49b

General

Target

15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
Size

270KB
MD5

a7d2eaf84e08f5316ac1697bbbd00e06
SHA1

05b3c914bd54988ce786b39cdc13814d10ef48ef
SHA256

15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0
SHA512

aa24224e1bdc0255023ac467549de1bee15dad7538e3b56d5db20bbaf03f6f8e8b74b95c3a72e1274eb58a853d88a0b7cf5227b486f727d931af0cf229b0471d
SSDEEP

6144:bbXn4tN/SsGQdxxZdQUV3ruDSsetMF8wV//eA3G:bT4tN/SbQ3xPBKGsBZ73

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

Processes:

15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.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 7 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
3840	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
3844	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
1720	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
4272	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
2200	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
3616	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
3012	4696	WerFault.exe	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3896 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3896 taskkill.exe

pid	process
3896	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3896	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.execmd.exe

description	pid	process	target process
PID 4696 wrote to memory of 1276	4696	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe	cmd.exe
PID 4696 wrote to memory of 1276	4696	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe	cmd.exe
PID 4696 wrote to memory of 1276	4696	15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe	cmd.exe
PID 1276 wrote to memory of 3896	1276	cmd.exe	taskkill.exe
PID 1276 wrote to memory of 3896	1276	cmd.exe	taskkill.exe
PID 1276 wrote to memory of 3896	1276	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe
"C:\Users\Admin\AppData\Local\Temp\15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 732
  2⤵
  - Program crash
  PID:3840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 804
  2⤵
  - Program crash
  PID:3844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 920
  2⤵
  - Program crash
  PID:1720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 936
  2⤵
  - Program crash
  PID:4272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 936
  2⤵
  - Program crash
  PID:2200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 968
  2⤵
  - Program crash
  PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1276
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "15e8fbd7bf5a5f967c87deaeff5389b9409bdc51a0d75c55d765b2e1b99d9ba0.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 932
  2⤵
  - Program crash
  PID:3012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4696 -ip 4696
1⤵
PID:1420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4696 -ip 4696
1⤵
PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 4696 -ip 4696
1⤵
PID:1900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4696 -ip 4696
1⤵
PID:1112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4696 -ip 4696
1⤵
PID:32

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4696 -ip 4696
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4696 -ip 4696
1⤵
PID:3380

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/4696-134-0x00000000005D0000-0x0000000000610000-memory.dmp

Filesize
256KB

Download
memory/4696-135-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/4696-136-0x00000000005D0000-0x0000000000610000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads