General

  • Target

    2192e7d45ea3c73b16b2cb84019a3a997828e2868e7a16680533426d100ce6ff

  • Size

    1.9MB

  • Sample

    240527-1s3yesce85

  • MD5

    7b94d114278ad84b17044eb13f5fdf61

  • SHA1

    ba896713353ae53b8d8114c0711ef2c2e9727feb

  • SHA256

    2192e7d45ea3c73b16b2cb84019a3a997828e2868e7a16680533426d100ce6ff

  • SHA512

    45a49a8a62d76a369f0a406b416a0c44494c8dda6795efc96bf2601dc6181314f51e66c0a77606812b493ee669f41497ecd4cc6a0aac6896b50552eb9fcecdfb

  • SSDEEP

    49152:CdKfTn6vuJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

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

      2192e7d45ea3c73b16b2cb84019a3a997828e2868e7a16680533426d100ce6ff

    • Size

      1.9MB

    • MD5

      7b94d114278ad84b17044eb13f5fdf61

    • SHA1

      ba896713353ae53b8d8114c0711ef2c2e9727feb

    • SHA256

      2192e7d45ea3c73b16b2cb84019a3a997828e2868e7a16680533426d100ce6ff

    • SHA512

      45a49a8a62d76a369f0a406b416a0c44494c8dda6795efc96bf2601dc6181314f51e66c0a77606812b493ee669f41497ecd4cc6a0aac6896b50552eb9fcecdfb

    • SSDEEP

      49152:CdKfTn6vuJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

    • 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