Analysis
-
max time kernel
145s -
max time network
151s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
-
submitted
15-11-2024 04:40
General
-
Target
Steam Servers Starter.exe
-
Size
328KB
-
MD5
118058cb2e49ff809845d5543a8ee5c8
-
SHA1
f7289d94b973fcbe0a064ed798c9328abecffca0
-
SHA256
1133b725403821998bc9750d965d028ae078a3cc8d6014cbf231f7fb40a14f92
-
SHA512
594bc589ca60bd653fabf72c34fb7e69de25643cbe19bbe1ed5e406390d7b6ac58c7adf76d66fc22d998b35bcfa5e0b07932aa6b73aee8cab1c277301c71bbf4
-
SSDEEP
6144:rWBIIzFb83+GIIIIIIIhIIIIIIIIIIIIIIIU:qBIUi4
Malware Config
Extracted
xworm
vshostupdater.duckdns.org:1177
http://vshostupdater.duckdns.org:1177
189.14.62.242:1177
192.168.1.6:1177
-
Install_directory
%AppData%
-
install_file
svhostupdt.exe
Signatures
-
Detect Xworm Payload 1 IoCs
-
Xworm
Xworm is a remote access trojan written in C#.
-
Xworm family
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
-
Drops startup file 2 IoCs
-
Adds Run key to start application 2 TTPs 1 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 1 IoCs
-
Suspicious use of AdjustPrivilegeToken 2 IoCs
-
Suspicious use of SetWindowsHookEx 1 IoCs
-
Suspicious use of WriteProcessMemory 2 IoCs
-
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\Steam Servers Starter.exe"C:\Users\Admin\AppData\Local\Temp\Steam Servers Starter.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Steam Servers Starter" /tr "C:\Users\Admin\AppData\Roaming\Steam Servers Starter"2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
8KB
-
Filesize
352KB
-
Filesize
10.8MB
-
Filesize
8KB
-
Filesize
10.8MB