gcleaner | fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632

General

Target

fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe
Size

315KB
MD5

b1562d245111031645ae8fbf7b8c16f6
SHA1

40db022d23b06ebb05170e1f2556f65e8a37de90
SHA256

fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632
SHA512

976837e9945b4aa714c327486037f9e6a2eb2f413d71f7fb18b32ce6255b12e3f7d7b33716f1de080eccb84645b14c6287a4e102ee5842cbbfca2e017e87c7cd
SSDEEP

6144:qEuAXzyPC9/+EUIJVTGPo5N6ZCuQTdJXd:duWzyPecIJ/5N+ChdJXd

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.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
1548	3372	WerFault.exe	82
3044	3372	WerFault.exe	82
856	3372	WerFault.exe	82
2384	3372	WerFault.exe	82
2844	3372	WerFault.exe	82
4420	3372	WerFault.exe	82
3924	3372	WerFault.exe	82
4796	3372	WerFault.exe	82
3120	3372	WerFault.exe	82
972	3372	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	fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.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
2412	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3372 wrote to memory of 4996	3372	fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe	114
PID 3372 wrote to memory of 4996	3372	fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe	114
PID 3372 wrote to memory of 4996	3372	fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe	114
PID 4996 wrote to memory of 2412	4996	cmd.exe	118
PID 4996 wrote to memory of 2412	4996	cmd.exe	118
PID 4996 wrote to memory of 2412	4996	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe
"C:\Users\Admin\AppData\Local\Temp\fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 448
  2⤵
  - Program crash
  PID:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 764
  2⤵
  - Program crash
  PID:3044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 772
  2⤵
  - Program crash
  PID:856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 816
  2⤵
  - Program crash
  PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 764
  2⤵
  - Program crash
  PID:2844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 928
  2⤵
  - Program crash
  PID:4420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 932
  2⤵
  - Program crash
  PID:3924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 1104
  2⤵
  - Program crash
  PID:4796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 1560
  2⤵
  - Program crash
  PID:3120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "fa0ef5e399db288cc428920ecaa280c691d7b2f3f8d1239d04f9ed5a99b15632.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 1684
  2⤵
  - Program crash
  PID:972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 3372 -ip 3372
1⤵
PID:2992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 3372 -ip 3372
1⤵
PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3372 -ip 3372
1⤵
PID:1608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3372 -ip 3372
1⤵
PID:3556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3372 -ip 3372
1⤵
PID:512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3372 -ip 3372
1⤵
PID:2496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3372 -ip 3372
1⤵
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3372 -ip 3372
1⤵
PID:1792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3372 -ip 3372
1⤵
PID:3836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3372 -ip 3372
1⤵
PID:3796

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\5JGBC19U\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3372-1-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

Filesize
1024KB

Download
memory/3372-2-0x0000000002D00000-0x0000000002D3B000-memory.dmp

Filesize
236KB

Download
memory/3372-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3372-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3372-12-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

Filesize
1024KB

Download
memory/3372-15-0x0000000002D00000-0x0000000002D3B000-memory.dmp

Filesize
236KB

Download
memory/3372-14-0x0000000000400000-0x0000000002B6F000-memory.dmp

Filesize
39.4MB

Download
memory/3372-16-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3372-31-0x0000000000400000-0x0000000002B6F000-memory.dmp

Filesize
39.4MB

Download
memory/3372-42-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3372-41-0x0000000000400000-0x0000000002B6F000-memory.dmp

Filesize
39.4MB

Download

Analysis

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