gcleaner | 8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a

General

Target

8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe
Size

290KB
MD5

5115daf5905ecda1c037ca29c2145939
SHA1

a86a8ccce3e184ef5efc6073901ce7bbe9aef92e
SHA256

8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a
SHA512

bddfab3b795de665f54b826319fbcd0b241fd06c61f669cb03042439a3faeb94fe7b44fd7468810b83731b95267684cc5d2ab11b1168fa7d1a97d1e706d1f687
SSDEEP

6144:3NhsCXt9gLmr3FjR3hchq0+9M7MhJD2W:3NhswDgslho7+ScB

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
3628	4976	WerFault.exe	83
1696	4976	WerFault.exe	83
3144	4976	WerFault.exe	83
4316	4976	WerFault.exe	83
1236	4976	WerFault.exe	83
4936	4976	WerFault.exe	83
1416	4976	WerFault.exe	83
2468	4976	WerFault.exe	83
2268	4976	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4396	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4396	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4976 wrote to memory of 2880	4976	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	116
PID 4976 wrote to memory of 2880	4976	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	116
PID 4976 wrote to memory of 2880	4976	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	116
PID 2880 wrote to memory of 4396	2880	cmd.exe	118
PID 2880 wrote to memory of 4396	2880	cmd.exe	118
PID 2880 wrote to memory of 4396	2880	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe
"C:\Users\Admin\AppData\Local\Temp\8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 448
  2⤵
  - Program crash
  PID:3628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 520
  2⤵
  - Program crash
  PID:1696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 748
  2⤵
  - Program crash
  PID:3144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 788
  2⤵
  - Program crash
  PID:4316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 828
  2⤵
  - Program crash
  PID:1236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 852
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 912
  2⤵
  - Program crash
  PID:1416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 1004
  2⤵
  - Program crash
  PID:2468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 1504
  2⤵
  - Program crash
  PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4976 -ip 4976
1⤵
PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4976 -ip 4976
1⤵
PID:4144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4976 -ip 4976
1⤵
PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4976 -ip 4976
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4976 -ip 4976
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4976 -ip 4976
1⤵
PID:396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4976 -ip 4976
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4976 -ip 4976
1⤵
PID:3412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4976 -ip 4976
1⤵
PID:3164

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6809OHQ0\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4976-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/4976-2-0x00000000006D0000-0x000000000070C000-memory.dmp

Filesize
240KB

Download
memory/4976-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4976-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4976-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4976-14-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/4976-16-0x00000000006D0000-0x000000000070C000-memory.dmp

Filesize
240KB

Download
memory/4976-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4976-35-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4976-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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