Resubmissions
23/03/2026, 02:00
260323-cffqcsds9n1005/03/2026, 16:32
260305-t1xm2scx3k1011/02/2026, 21:18
260211-z5q9qaav8h1011/05/2025, 03:54
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240902-cwxc2sygll1021/06/2024, 19:37
240621-yca7cszgnd10Analysis
- user interaction
yes - max time kernel
177s - max time network
190s - platform
windows10-2004_x64 - resource
win10v2004-20260129-en - resource tags
- submitted
23/03/2026, 02:00
General
- Target RAT/XClient.exe
- Size 172KB
- Sample260323-cffqcsds9n
- SHA256 75a8719e83e4aecbe51287d7bfaf1e334fa190c7784324f24bcf61ab984de20a
Malware Config
Extracted
-
xworm
-
XWorm V5.2
-
Install_directory
%AppData%
-
install_file
XClient.exe
-
pastebin_url
https://pastebin.com/raw/2jTT3Lnj
Signatures
- Detect Xworm Payload 2 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Xworm family
- Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 5 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).
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RAT\XClient.exe"C:\Users\Admin\AppData\Local\Temp\RAT\XClient.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\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RAT\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_syvciifh.l3k.ps1
XClient.exe
memory/1220-27-0x000001AF174E0000-0x000001AF174E8000-memory.dmp
memory/1220-26-0x000001AF17310000-0x000001AF1731C000-memory.dmp
memory/1260-48-0x000002318F780000-0x000002318F78C000-memory.dmp
memory/1260-49-0x0000023191040000-0x0000023191048000-memory.dmp
memory/4184-38-0x0000020EA3170000-0x0000020EA3178000-memory.dmp
memory/4184-37-0x0000020EA30B0000-0x0000020EA30BC000-memory.dmp
memory/4388-50-0x0000000001260000-0x000000000126C000-memory.dmp
memory/4388-0-0x0000000000AB0000-0x0000000000AE0000-memory.dmp
memory/4388-51-0x0000000001280000-0x0000000001288000-memory.dmp
memory/4388-1-0x000000001B910000-0x000000001B920000-memory.dmp
memory/4388-58-0x000000001B910000-0x000000001B920000-memory.dmp
memory/4868-61-0x0000000001270000-0x0000000001278000-memory.dmp
memory/4868-60-0x0000000001060000-0x000000000106C000-memory.dmp
memory/4880-14-0x000002349D120000-0x000002349D12C000-memory.dmp
memory/4880-15-0x000002349EB00000-0x000002349EB08000-memory.dmp
memory/4880-10-0x000002349ECE0000-0x000002349ED02000-memory.dmp
memory/4880-3-0x00000234B7220000-0x00000234B7230000-memory.dmp
memory/4880-2-0x00000234B7220000-0x00000234B7230000-memory.dmp