Managed XDR

c-users-user-appdata-l...build-lb3_rundll32.dll (BlackMatter, Lockbit) — malware analysis report

File info

Filename
c-users-user-appdata-local-temp-build-lb3_rundll32.dll
File type
PE32 executable (DLL) (GUI) Intel 80386, for MS Windows
File size
147 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
f59f8685f8a91b79663561aa15f192cfd797f168
SHA256
a0def184b02557d9d727205c2df2683f49a00c196d2ee935691a862550b0ccae
MD5
760f0376331e6171158dd516e1da0465

Malwares

  • BlackMatter
  • Lockbit

Signatures

Privilege Escalation

T1055.012 injection_runpe: Injects code into another process
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
T1497 antidbg_setinformationthread: Attempts to evade debugger using NtSetInformationThread
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

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
creates_suspended_process: Creates suspended process
message_box: Displays a message
error_drawtext: An error occured while executing the file
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
checktokenmembership: Checks user token with CheckTokenMembership call

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