Managed XDR

systemupdate.lnk — malware analysis report

File info

Filename
systemupdate.lnk
File type
MS Windows shortcut, Item id list present, Points to a file or directory, Has Description string, Has Relative path, Has command line arguments, Archive, ctime=Sat Dec 7 09:08:34 2019, mtime=Fri Jul 31 19:13:37 2026, atime=Sat Dec 7 09:08:34 2019, length=289792, window=hidenormalshowminimized
File size
2.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
088bcba8d7313b8f74dfa9a1cc0211905d5a1998
SHA256
ff54c2ee899695e7a124d6705dc3af0f347bd1c76de2eaa4c363ce26bdeb291e
MD5
36338cb5abbb8e25bacc027e66470f17

Signatures

Execution

T1204 suspicious_lnk: LNK file with suspicious content
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Defense Evasion

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1082 recon_systeminfo: Collects system information (ipconfig, netstat, systeminfo, net)
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1082 has_wmi: Executes one or several WMI requests
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1057 has_wmi: Executes one or several WMI requests
T1087 has_wmi: Executes one or several WMI requests
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1087.002 domain_account_discovery: Collects information about accounts and groups in domain

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

creates_in_windows: Creates files in the Windows directory
network_bind: Starts servers listening at None
creates_suspended_process: Creates suspended process
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
yara_rules: Static rules