Managed XDR

c-users-user-appdata-roaming-osk.exe (Lockbit, Hupigon) — malware analysis report

File info

Filename
c-users-user-appdata-roaming-osk.exe
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
404 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
2b3ce66702cd7ea66d1ec67b6cfb1f79fba6e569
SHA256
ca8e71fff457ec7aaf6ebb69441957cdeb6f98529f226f4d618d2c8ade3848b7
MD5
be6c919788f82986c9bd61897bdd474a

Malwares

  • Lockbit
  • Hupigon

Signatures

Execution

T1059.007 mshta_javascript: Runs JavaScript using mshta

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
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
T1497.001 antisandbox_joe_anubis_files: Searches for indicators of Joe Sandboxes or Anubis Sandbox
T1497.001 antivm_generic_scsi: Attempts to detect virtualization by SCSI Disk Identifier
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1480 system_default_lang_id_present: Checks the system language

Discovery

T1497.001 antisandbox_file: Attempts to detect a sandbox (checks the file name)
T1497.001 antisandbox_joe_anubis_files: Searches for indicators of Joe Sandboxes or Anubis Sandbox
T1497.001 antivm_generic_scsi: Attempts to detect virtualization by SCSI Disk Identifier
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions

Collection

T1115 checks_clipboard: Monitors clipboard data
T1115 set_clipboard_data: Sets data to clipboard

Impact

T1486 modifies_files2: Cryptolocker indicators detected (500 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 500 or more files)
T1486 ransomware_message: Ransomware indicators detected (possible ransom message creation)
T1486 ransomware_files: Ransomware indicators detected Lockbit (creates keys and the instruction on how to unlock the files)

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
creates_exe: Creates executable files in the file system
unexpected_exception: Unexpected exception
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
break_limit_exceeded: Warning: function calls limit has been exceeded
origin_langid: Unconventional language of the executable file
get_policy_info: Retrieves information about a Policy object
changes_ext_type: File extension changed from executable to non-executable or vice versa

Related reports