Managed XDR

home-petik-ss-malware-...45a223e685e4bc_virlock (Virlock) — malware analysis report

File info

Filename
home-petik-ss-malware-2024-06-15_15a16b00cc9817b1a845a223e685e4bc_virlock
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
118.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
f8c62518b504497892107321fc4b1e54eda28d03
SHA256
26e0feba24eaae76c0bf6b9920b7c61616505c6131d62572c61f7c61dac2c0db
MD5
15a16b00cc9817b1a845a223e685e4bc

Malwares

  • Virlock

Signatures

Execution

T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1204.002 mimics_extension: Attempts to mimic the file extension

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
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

T1070.004 deletes_self: Moves to different location or removes the original executable file
T1564.001 hides_original_file: Makes original executable file hidden
T1562 disables_uac: Disable UAC
T1564.001 stealth_file: Creates hidden or system files
T1112 stealth_hidden_extension: Attempts to change system settings so that file extensions won't be displayed
T1112 stealth_hiddenreg: Attempts to change Explorer settings so that hidden files won't be displayed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1036 mimics_extension: Attempts to mimic the file extension
T1070 stealth_window: A process created a hidden window

Credential Access

T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_mail: Collects personal data from local email clients
T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1083 crawls_directories: Opens a huge number of directories all over disk C: (possibly, searches for sensitive data)
T1057 process_interest: Enumerates processes
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests

Impact

T1486 ransomware_windows_possible: Ransomware indicators detected (possible ransom window creation)
T1486 modifies_files: Cryptolocker indicators detected (renamed 5 or more files)

Other

yara_rules: Static rules
creates_many_processes: Spawns a lot of processes (over 70)
creates_exe: Creates executable files in the file system
static_pe_anomaly: The PE file structure contains anomalies
dead_host: Connects to IP addresses that do not respond to requests
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
access_recyclebin: Manipulation with recyclebin detected
creates_in_programdata: Creates files in the ProgramData directory
writes_data: Writes big amount of data to disk
suricata_alert: Malicious traffic detected

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