General

  • Target

    0b482e2ab1e7617208c8c1efb813fa9068ffef7e6838a4e3480306556a9a8360

  • Size

    2.4MB

  • Sample

    240610-fz9dkadc64

  • MD5

    783e39299c7629c4f388b029645e558c

  • SHA1

    8c381c89c48665c907ebb53302d598f671f26901

  • SHA256

    0b482e2ab1e7617208c8c1efb813fa9068ffef7e6838a4e3480306556a9a8360

  • SHA512

    9dcb071810a55807dae7a1c594be5e6e206f63abcf62d521e1a27770e5ac5abdfed3e1498122e4b2de3ff49f29bf81069b29827b71ec82e8748f98fa43ae31c5

  • SSDEEP

    49152:bRynbaHbGJeBwbxc3C4BVEIamvPurzsuvRUwca8OxzTYMeGusZk81bbaonFo:NynbaWeBw1HIEIameviwcaBosTZ5iZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      0b482e2ab1e7617208c8c1efb813fa9068ffef7e6838a4e3480306556a9a8360

    • Size

      2.4MB

    • MD5

      783e39299c7629c4f388b029645e558c

    • SHA1

      8c381c89c48665c907ebb53302d598f671f26901

    • SHA256

      0b482e2ab1e7617208c8c1efb813fa9068ffef7e6838a4e3480306556a9a8360

    • SHA512

      9dcb071810a55807dae7a1c594be5e6e206f63abcf62d521e1a27770e5ac5abdfed3e1498122e4b2de3ff49f29bf81069b29827b71ec82e8748f98fa43ae31c5

    • SSDEEP

      49152:bRynbaHbGJeBwbxc3C4BVEIamvPurzsuvRUwca8OxzTYMeGusZk81bbaonFo:NynbaWeBw1HIEIameviwcaBosTZ5iZ

    • Detect Vidar Stealer

    • Detects DLL dropped by Raspberry Robin.

      Raspberry Robin.

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks