General

  • Target

    00a124d684539287233789abd93fa5cf4f094ef4451be10447be7f0011dc366e

  • Size

    1.9MB

  • Sample

    240527-2wvxnadb3s

  • MD5

    b7963d7172718724f3dc9f5ddfc140a4

  • SHA1

    e952613da0558f429fdf5703fd0fd9460287d32c

  • SHA256

    00a124d684539287233789abd93fa5cf4f094ef4451be10447be7f0011dc366e

  • SHA512

    964b668c31698b07f2012b9b11f04938c45f8dc092c15ffbb93c42a48610ca8348bb947e110073f707d759b9daaa8e58c03d4f0182d126cc4362b5bd88500e11

  • SSDEEP

    49152:CdKfTn6vGJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnltIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

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

Targets

    • Target

      00a124d684539287233789abd93fa5cf4f094ef4451be10447be7f0011dc366e

    • Size

      1.9MB

    • MD5

      b7963d7172718724f3dc9f5ddfc140a4

    • SHA1

      e952613da0558f429fdf5703fd0fd9460287d32c

    • SHA256

      00a124d684539287233789abd93fa5cf4f094ef4451be10447be7f0011dc366e

    • SHA512

      964b668c31698b07f2012b9b11f04938c45f8dc092c15ffbb93c42a48610ca8348bb947e110073f707d759b9daaa8e58c03d4f0182d126cc4362b5bd88500e11

    • SSDEEP

      49152:CdKfTn6vGJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnltIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks