gcleaner | 1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e

General

Target

1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe
Size

316KB
MD5

6da3875855dbc38cf2c6bc4b0de845cb
SHA1

46aa05596d717ca6b1828e27e9a8642e1e192175
SHA256

1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e
SHA512

3d132f6d9392cb361682f99c018ccca1648d912f062e4c27023bcab70a71ffe42f06702232014649c629a24c098337c60832cca08a96d0d0426ed72aa5c7dc70
SSDEEP

6144:I7R6+hOT0vf7bKLpC41hBqA5tD2WMOunuSG+w9+uQTdJ6mjZ:I16+hOT0ruoChBhx2WKuSG+Y+hdJ6mjZ

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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 704 set thread context of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.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
1660	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 704 wrote to memory of 4748	704	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	87
PID 4748 wrote to memory of 4684	4748	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	96
PID 4748 wrote to memory of 4684	4748	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	96
PID 4748 wrote to memory of 4684	4748	1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe	96
PID 4684 wrote to memory of 1660	4684	cmd.exe	98
PID 4684 wrote to memory of 1660	4684	cmd.exe	98
PID 4684 wrote to memory of 1660	4684	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe
"C:\Users\Admin\AppData\Local\Temp\1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:704
- C:\Users\Admin\AppData\Local\Temp\1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe
  "C:\Users\Admin\AppData\Local\Temp\1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4748
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c taskkill /im "1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4684
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im "1d8a6c84cde7b233efb9169db893736922cef5d348a7382745d11c369d01ad6e.exe" /f
      4⤵
      System Location Discovery: System Language Discovery
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1660

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\BOIFDBOU\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/704-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/704-2-0x0000000002D10000-0x0000000002D4B000-memory.dmp

Filesize
236KB

Download
memory/4748-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-4-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-5-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-7-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-12-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/4748-18-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-29-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/4748-37-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

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