Managed XDR

attachment.lnk — malware analysis report

File info

Filename
attachment.lnk
File type
MS Windows shortcut, Item id list present, Has Description string, Has Relative path, Has Working directory, Has command line arguments, Icon, ctime=Mon Jan 1 00:00:00 1601, mtime=Mon Jan 1 00:00:00 1601, atime=Mon Jan 1 00:00:00 1601, length=0, window=hidenormalshowminimized
File size
2.8 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
7d6632f1e41ac39eb5524974b044ed058a3138ad
SHA256
cfc6cc6bdba2afe77bc791da2866002af58ed39f6005d874f565752fb57d95ad
MD5
e50362adb8361be227a6e5757d64ac16

Signatures

Resource Development

T1608.005 contacts_url_shortener: Connects to url shortening services

Execution

T1204 suspicious_lnk: LNK file with suspicious content
T1059 cmd_vbs: Uses cmd.exe to generate VBS
T1059.001 suspicious_powershell: Creates suspicious PowerShell process
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1059.001 suspicious_process: Spawns a suspicious process

Defense Evasion

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1140 unpacking_utilities: Uses Windows utilities to unpack data
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
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

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1082 has_wmi: Executes one or several WMI requests
T1057 has_wmi: Executes one or several WMI requests
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Command and Control

T1102.003 cloud_github: Connects to cloud services of Github (potentially for malicious payload delivery)
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_exe: Creates executable files in the file system
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