Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
06/06/2024, 15:10
General
- Target 2960-2-0x0000000000600000-0x000000000061C000-memory.exe
- Size 112KB
- Sample240606-sjzweagg43
- SHA256 6415df8b62072b30dc0eeeddb28299f08b63b90a5f98040ca2cfd0ff92ad7b8b
Malware Config
Extracted
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xworm
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wiz.bounceme.net:6000
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Install_directory
%AppData%
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install_file
System.exe
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pastebin_url
https://pastebin.com/raw/ce9Y28X4
Signatures
- Detect Xworm Payload 3 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 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 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- 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).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 11 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 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
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C:\Users\Admin\AppData\Local\Temp\2960-2-0x0000000000600000-0x000000000061C000-memory.exe"C:\Users\Admin\AppData\Local\Temp\2960-2-0x0000000000600000-0x000000000061C000-memory.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
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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\2960-2-0x0000000000600000-0x000000000061C000-memory.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '2960-2-0x0000000000600000-0x000000000061C000-memory.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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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\2960-2-0x0000000000600000-0x000000000061C000-memory.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "2960-2-0x0000000000600000-0x000000000061C000-memory" /tr "C:\Users\Admin\AppData\Roaming\2960-2-0x0000000000600000-0x000000000061C000-memory.exe"2⤵
- Creates scheduled task(s)
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=1288,i,11746347647270949551,7786733067759450703,262144 --variations-seed-version --mojo-platform-channel-handle=3940 /prefetch:81⤵
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C:\Users\Admin\AppData\Roaming\2960-2-0x0000000000600000-0x000000000061C000-memory.exeC:\Users\Admin\AppData\Roaming\2960-2-0x0000000000600000-0x000000000061C000-memory.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\2960-2-0x0000000000600000-0x000000000061C000-memory.exeC:\Users\Admin\AppData\Roaming\2960-2-0x0000000000600000-0x000000000061C000-memory.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
2960-2-0x0000000000600000-0x000000000061C000-memory.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_roqthfbb.lpf.ps1
2960-2-0x0000000000600000-0x000000000061C000-memory.exe
memory/4592-13-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4592-15-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4592-18-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4592-14-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4592-12-0x000001FE752D0000-0x000001FE752F2000-memory.dmp
memory/4916-0-0x00007FF992653000-0x00007FF992655000-memory.dmp
memory/4916-2-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4916-50-0x000000001CCD0000-0x000000001CCDE000-memory.dmp
memory/4916-51-0x00007FF992653000-0x00007FF992655000-memory.dmp
memory/4916-52-0x00007FF992650000-0x00007FF993111000-memory.dmp
memory/4916-1-0x00000000006D0000-0x00000000006EC000-memory.dmp