Managed XDR

c-users-user-appdata-l...z.iwi-lbb_rundll32.dll (BlackMatter, Lockbit) — malware analysis report

File info

Filename
c-users-user-appdata-local-temp-0gbr0wcz.iwi-lbb_rundll32.dll
File type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
File size
156 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
ca9e2ac5bf3b3d6274a1ac128d91a0363ec66737
SHA256
2a31c1b49f34758b0af216c114be85980f6042eabeef1fb536967b192c8cdbdc
MD5
0d3a59e10aae86946f5274f301618793

Malwares

  • BlackMatter
  • Lockbit

Signatures

Persistence

T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
T1134 sets_privilegies_via_rtladjustprivilege: Sets process privilege via RtlAdjustPrivilege
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

T1055.012 injection_runpe: Injects code into another process
T1562.001 disables_security: Disables Windows Security options
T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1574.011 persistence_services: Modifies Services registry key
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1134 sets_privilegies_via_rtladjustprivilege: Sets process privilege via RtlAdjustPrivilege
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1070 stealth_window: A process created a hidden window
T1070.004 self_removal_command: Executes command to delete itself

Discovery

T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1518 locates_browser: Attempts to identify where browsers are installed

Collection

T1113 screenshot_file: Possibly, makes a screenshot and saves it to a file
T1074.001 access_recyclebin: Manipulation with recyclebin detected

Impact

T1489 stops_service: Stops Windows services
T1486 modifies_files2: Cryptolocker indicators detected (100 or more files are modified)
T1486 modifies_files: Cryptolocker indicators detected (renamed 100 or more files)
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
lockbit: Detected ransomware Lockbit
executes_dropped_exe: Executes dropped exe files
accesses_mailslot: Performs a Mailslot ping, possibly used to get Domain Controller information
cryptolocker_wallpaper: Ransomware indicators detected (changes the desktop wallpaper file)
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
message_box: Displays a message
error_drawtext: An error occured while executing the file
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk

Related reports

Managed XDR