Analysis
- user interaction
yes - max time kernel
54s - max time network
51s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
19/05/2026, 23:25
General
- Target XWormClient.exe
- Size 81KB
- Sample260519-3efbbadw6v
- SHA256 207dd79cd6e5e43fbc09e3879687e2a929bfbfeb3036a1c9f72c6f0a1bf0ac2e
Malware Config
Extracted
-
xworm
-
XWorm V6.0
-
https://pastebin.com/raw/FYX18U62:1234567
-
Install_directory
%AppData%
-
install_file
dllhost.exe
-
pastebin_url
https://pastebin.com/raw/FYX18U62
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 2 IoCs
- Drops startup file 3 IoCs
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 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\XWormClient.exe"C:\Users\Admin\AppData\Local\Temp\XWormClient.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "dllhost" /tr "C:\Users\Admin\AppData\Roaming\dllhost.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\dllhost.exeC:\Users\Admin\AppData\Roaming\dllhost.exe1⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "dllhost" /tr "C:\Users\Admin\AppData\Roaming\dllhost.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
dllhost.lnk
dllhost.exe
memory/3624-0-0x0000000000E20000-0x0000000000E3A000-memory.dmp
memory/3624-1-0x000000001D080000-0x000000001D090000-memory.dmp
memory/3624-2-0x000000001D080000-0x000000001D090000-memory.dmp
memory/3888-9-0x000000001C6A0000-0x000000001C6B0000-memory.dmp
memory/3888-10-0x000000001C6A0000-0x000000001C6B0000-memory.dmp