gcleaner | a60e84798f50c0f059277deb575211cf6bb281a370839cd3712cadb50e5b5ba7

General

Target

f4d018bed6bd4e093b03501f4588d3a0N.exe
Size

324KB
MD5

f4d018bed6bd4e093b03501f4588d3a0
SHA1

99ec2abf0d0e06c82942c5c66feb3734d409769c
SHA256

a60e84798f50c0f059277deb575211cf6bb281a370839cd3712cadb50e5b5ba7
SHA512

fec16d23693bd008c32517a5551414dae45a6fd06c2e4b845853fdbdc05e28b236b85771131c6d7c905519f47f0462049db3b4f4c4e908aaca1a209a2f4d3d45
SSDEEP

6144:KeDq3hGbgMrFhKL5FBqUY1K0nzZquQC+XJPyC/MPj0Vdh1tQ:K2qgUMrFhKnNpmzg2+X5yuVdz

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	f4d018bed6bd4e093b03501f4588d3a0N.exe

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
3616	1712	WerFault.exe	82
4452	1712	WerFault.exe	82
1744	1712	WerFault.exe	82
1328	1712	WerFault.exe	82
4868	1712	WerFault.exe	82
1316	1712	WerFault.exe	82
456	1712	WerFault.exe	82
212	1712	WerFault.exe	82
968	1712	WerFault.exe	82
1928	1712	WerFault.exe	82

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	f4d018bed6bd4e093b03501f4588d3a0N.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
2264	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1156	1712	f4d018bed6bd4e093b03501f4588d3a0N.exe	115
PID 1712 wrote to memory of 1156	1712	f4d018bed6bd4e093b03501f4588d3a0N.exe	115
PID 1712 wrote to memory of 1156	1712	f4d018bed6bd4e093b03501f4588d3a0N.exe	115
PID 1156 wrote to memory of 2264	1156	cmd.exe	118
PID 1156 wrote to memory of 2264	1156	cmd.exe	118
PID 1156 wrote to memory of 2264	1156	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\f4d018bed6bd4e093b03501f4588d3a0N.exe
"C:\Users\Admin\AppData\Local\Temp\f4d018bed6bd4e093b03501f4588d3a0N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 440
  2⤵
  - Program crash
  PID:3616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 504
  2⤵
  - Program crash
  PID:4452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 748
  2⤵
  - Program crash
  PID:1744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 788
  2⤵
  - Program crash
  PID:1328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 788
  2⤵
  - Program crash
  PID:4868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 852
  2⤵
  - Program crash
  PID:1316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 912
  2⤵
  - Program crash
  PID:456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 984
  2⤵
  - Program crash
  PID:212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 1652
  2⤵
  - Program crash
  PID:968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "f4d018bed6bd4e093b03501f4588d3a0N.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\f4d018bed6bd4e093b03501f4588d3a0N.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "f4d018bed6bd4e093b03501f4588d3a0N.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1712 -s 1012
  2⤵
  - Program crash
  PID:1928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1712 -ip 1712
1⤵
PID:1240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1712 -ip 1712
1⤵
PID:4756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1712 -ip 1712
1⤵
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1712 -ip 1712
1⤵
PID:1044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1712 -ip 1712
1⤵
PID:2368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1712 -ip 1712
1⤵
PID:952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1712 -ip 1712
1⤵
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1712 -ip 1712
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1712 -ip 1712
1⤵
PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1712 -ip 1712
1⤵
PID:3968

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\68XY2BI1\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1712-16-0x00000000005B0000-0x00000000005EB000-memory.dmp

Filesize
236KB

Download
memory/1712-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1712-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/1712-13-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/1712-14-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/1712-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1712-2-0x00000000005B0000-0x00000000005EB000-memory.dmp

Filesize
236KB

Download
memory/1712-28-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-31-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-42-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/1712-41-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download

Analysis

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