Managed XDR

example.lnk (XWorm) — malware analysis report

File info

Filename
example.lnk
File type
MS Windows shortcut, Item id list present, Has Description string, Has Working directory, Has command line arguments, Icon number=0, ctime=Tue Mar 4 17:29:30 2025, mtime=Tue Mar 4 17:29:30 2025, atime=Tue Mar 4 17:29:30 2025, length=0, window=hidenormalshowminimized
File size
106.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
fa4fe5dfc3897677ee5b5c69cd189e4167427d37
SHA256
f5e258657d2fff2421af1045023ed6ffa0b2c5bdbee9cb186f143ee47320b0a3
MD5
6975af881b0b0e3751002dcc064b886a

Malwares

  • XWorm

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1059.001 suspicious_process: Spawns a suspicious process

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name
T1070 stealth_window: A process created a hidden window
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_queries_computername: Retrieves the computer name

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
critical_process: Makes the process critical to the system (the system shuts down when it's terminated)
create_process_failed: Could not start the process
dead_host: Connects to IP addresses that do not respond to requests
unexpected_exception: Unexpected exception
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port
checktokenmembership: Checks user token with CheckTokenMembership call

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