gcleaner | abbc1acb8e317fd76620190790b1137b6bc1122718954470fff52cc1e0e3b2a5

General

Target

4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
Size

276KB
MD5

d554d767e490e4a920b0efde009c1ee2
SHA1

685f5852949a32832eb38314a699b7697550ad2d
SHA256

4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508
SHA512

5643111c5370d9afdc677ade1e168bfd90ff0f518ad6d680c5b053336df7e88a20e34efd03352dda53931b0d87bcad484184036a7a9af8e4aa6927082862d888
SSDEEP

6144:IzaompYs/FnG2Hq9h8GE2u73uySVApc+:uEYs/hG2K9hjeSK

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:

4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.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

Processes:

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

pid	pid_target	process	target process
1792	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
4068	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
2604	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
948	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
1560	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
3340	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
1848	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
2792	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
4752	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
2244	840	WerFault.exe	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

4488 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 4488 taskkill.exe

pid	process
4488	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	4488	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.execmd.exe

description	pid	process	target process
PID 840 wrote to memory of 2340	840	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe	cmd.exe
PID 840 wrote to memory of 2340	840	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe	cmd.exe
PID 840 wrote to memory of 2340	840	4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe	cmd.exe
PID 2340 wrote to memory of 4488	2340	cmd.exe	taskkill.exe
PID 2340 wrote to memory of 4488	2340	cmd.exe	taskkill.exe
PID 2340 wrote to memory of 4488	2340	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe
"C:\Users\Admin\AppData\Local\Temp\4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 456
  2⤵
  - Program crash
  PID:1792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 776
  2⤵
  - Program crash
  PID:4068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 768
  2⤵
  - Program crash
  PID:2604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 768
  2⤵
  - Program crash
  PID:948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 864
  2⤵
  - Program crash
  PID:1560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 928
  2⤵
  - Program crash
  PID:3340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 936
  2⤵
  - Program crash
  PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 1076
  2⤵
  - Program crash
  PID:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 1380
  2⤵
  - Program crash
  PID:4752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "4b0e4fd6806fe1cd9dd277211a3aa9ab0510a3795355190acf8a84f6a2e5a508.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 840 -s 536
  2⤵
  - Program crash
  PID:2244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 840 -ip 840
1⤵
PID:1664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 840 -ip 840
1⤵
PID:1512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 840 -ip 840
1⤵
PID:1384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 840 -ip 840
1⤵
PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 840 -ip 840
1⤵
PID:100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 840 -ip 840
1⤵
PID:3780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 840 -ip 840
1⤵
PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 840 -ip 840
1⤵
PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 840 -ip 840
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 840 -ip 840
1⤵
PID:4696

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/840-134-0x00000000006C0000-0x0000000000700000-memory.dmp

Filesize
256KB

Download
memory/840-136-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads