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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
1848	3256	WerFault.exe	80
3064	3256	WerFault.exe	80
4040	3256	WerFault.exe	80
5024	3256	WerFault.exe	80
3972	3256	WerFault.exe	80
3388	3256	WerFault.exe	80
4864	3256	WerFault.exe	80
3996	3256	WerFault.exe	80
2188	3256	WerFault.exe	80
2824	3256	WerFault.exe	80

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

Kills process with taskkill 1 IoCs

evasion

pid	Process
584	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	584	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 2988	3256	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	104
PID 3256 wrote to memory of 2988	3256	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	104
PID 3256 wrote to memory of 2988	3256	8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe	104
PID 2988 wrote to memory of 584	2988	cmd.exe	106
PID 2988 wrote to memory of 584	2988	cmd.exe	106
PID 2988 wrote to memory of 584	2988	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe
"C:\Users\Admin\AppData\Local\Temp\8065d03f70f7c6e2109e42b6b9f356e20a23d4e1090e8e6c00fb3de8f3a0d91a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 476
  2⤵
  - Program crash
  PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 500
  2⤵
  - Program crash
  PID:3064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 788
  2⤵
  - Program crash
  PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 780
  2⤵
  - Program crash
  PID:5024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 832
  2⤵
  - Program crash
  PID:3972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 884
  2⤵
  - Program crash
  PID:3388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 960
  2⤵
  - Program crash
  PID:4864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 1092
  2⤵
  - Program crash
  PID:3996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 1468
  2⤵
  - Program crash
  PID:2188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 1748
  2⤵
  - Program crash
  PID:2824
- 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:2988
- - 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:584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3256 -ip 3256
1⤵
PID:3632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3256 -ip 3256
1⤵
PID:3580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3256 -ip 3256
1⤵
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3256 -ip 3256
1⤵
PID:3044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3256 -ip 3256
1⤵
PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3256 -ip 3256
1⤵
PID:2092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3256 -ip 3256
1⤵
PID:1868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3256 -ip 3256
1⤵
PID:696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3256 -ip 3256
1⤵
PID:4684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3256 -ip 3256
1⤵
PID:2084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\XKWRT8IT\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3256-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/3256-2-0x0000000000900000-0x000000000093C000-memory.dmp

Filesize
240KB

Download
memory/3256-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3256-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3256-13-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/3256-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3256-16-0x0000000000900000-0x000000000093C000-memory.dmp

Filesize
240KB

Download
memory/3256-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3256-27-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3256-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3256-35-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

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