Managed XDR

aa.lnk — malware analysis report

File info

Filename
aa.lnk
File type
MS Windows shortcut, Has Description string, Has command line arguments, Icon number=0, 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=
File size
29.8 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
8dd403b7aface7bc4b03b708874c3a6f8b9fd0f9
SHA256
9e3a7d7da3e678192b7bac5e2d482a58ec7a1cfe6cd80d80b3c6f57615a13a9c
MD5
d42285a41b01a0c09db12ba5208491c8

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1204 suspicious_lnk: LNK file with suspicious content
T1059.001 suspicious_process: Spawns a suspicious process

Privilege Escalation

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

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1216 suspicious_syncappvpublishingserver: Creates suspicious SyncAppvPublishingServer process
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
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

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)

Other

creates_exe: Creates executable files in the file system
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
yara_rules: Static rules