gcleaner | 5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84

General

Target

5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe
Size

422KB
MD5

d6f97c1c4452a24fd425f9c5c8b73225
SHA1

9d0947e77103f475d39530aa7fb3452cf6afff55
SHA256

5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84
SHA512

8890b1c585843b7e2ae91db351c8338d10ac288db625b8eb8b194b8549e6c34875467e4805321eddebf1221fed3070159aa4bc1e305b0f9b5de336720e399d7c
SSDEEP

6144:FPnPSXWpS+5zXNqmaujcDOxrVHLvDwAb+/BpfEhUHP6B:NPe+5zXx06rRsAb+/HXHi

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
5052	4460	WerFault.exe	79
4016	4460	WerFault.exe	79
712	4460	WerFault.exe	79
4920	4460	WerFault.exe	79
3656	4460	WerFault.exe	79
1764	4460	WerFault.exe	79
1824	4460	WerFault.exe	79
3112	4460	WerFault.exe	79

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	5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1784	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 4632	4460	5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe	96
PID 4460 wrote to memory of 4632	4460	5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe	96
PID 4460 wrote to memory of 4632	4460	5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe	96
PID 4632 wrote to memory of 1784	4632	cmd.exe	100
PID 4632 wrote to memory of 1784	4632	cmd.exe	100
PID 4632 wrote to memory of 1784	4632	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe
"C:\Users\Admin\AppData\Local\Temp\5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 780
  2⤵
  - Program crash
  PID:5052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 812
  2⤵
  - Program crash
  PID:4016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 856
  2⤵
  - Program crash
  PID:712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 880
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 868
  2⤵
  - Program crash
  PID:3656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 1060
  2⤵
  - Program crash
  PID:1764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 1428
  2⤵
  - Program crash
  PID:1824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "5215cf91873d90f02e10d9074348171a4ac61f9d8f4c337e147e545460bfdb84.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 1376
  2⤵
  - Program crash
  PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4460 -ip 4460
1⤵
PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4460 -ip 4460
1⤵
PID:1412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4460 -ip 4460
1⤵
PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4460 -ip 4460
1⤵
PID:2512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4460 -ip 4460
1⤵
PID:2400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4460 -ip 4460
1⤵
PID:3964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4460 -ip 4460
1⤵
PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4460 -ip 4460
1⤵
PID:432

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\3EO0KN0W\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/4460-1-0x0000000002630000-0x0000000002730000-memory.dmp

Filesize
1024KB

Download
memory/4460-2-0x00000000042E0000-0x000000000430D000-memory.dmp

Filesize
180KB

Download
memory/4460-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4460-8-0x0000000002630000-0x0000000002730000-memory.dmp

Filesize
1024KB

Download
memory/4460-10-0x00000000042E0000-0x000000000430D000-memory.dmp

Filesize
180KB

Download
memory/4460-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4460-11-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/4460-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4460-21-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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