Analysis
- max time kernel
149s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
19/08/2026, 22:36
General
- Target XClient.exe
- Size 33KB
- Sample260819-2jm2aavdpg
- SHA256 4b691e5c44c8d179868da9d6bd33467646a6541bff496978ac4cfceae3399a7c
Malware Config
Extracted
-
xworm
-
3.0
-
16.tcp.vip.cpolar.cn:14265
-
zG9eAdVtBBvzcVhl
-
Install_directory
%AppData%
-
install_file
USB.exe
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 2 IoCs
- Executes dropped EXE 3 IoCs
- Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 6 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\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.exe"1⤵
- 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 "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /delete /f /tn "XClient"2⤵
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp98F1.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
-
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
-
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\XClient.exe"C:\Users\Admin\AppData\Roaming\XClient.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Roaming\XClient.exe"C:\Users\Admin\AppData\Roaming\XClient.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Program Files (x86)\Windows Media Player\wmplayer.exe"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\unregmp2.exe"C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\unregmp2.exe"C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT3⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost1⤵
- Drops file in Windows directory
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
CurrentDatabase_400.wmdb
CurrentDatabase_400.wmdb
WMSDKNS.XML.bak
mptjbo.mp3
tmp98F1.tmp.bat
wmsetup.log
XClient.exe
memory/2444-12-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/2444-10-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/2444-11-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-0-0x00007FFE4128F000-0x00007FFE41290000-memory.dmp
memory/4260-13-0x000000001C800000-0x000000001C80A000-memory.dmp
memory/4260-6-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-5-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-42-0x00000000010D0000-0x000000000115E000-memory.dmp
memory/4260-4-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-3-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-2-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-56-0x00007FFE41100000-0x00007FFE41AA4000-memory.dmp
memory/4260-1-0x00000000009B0000-0x00000000009BE000-memory.dmp