General

  • Target

    cdfa082e4d6fa493fe58e94542e5e20c5b87fca8d6940aa98b57811a0417f6b3

  • Size

    1.9MB

  • Sample

    240527-z8qscsae6w

  • MD5

    1922fee9fa78a6fe8008a5a2e7794cb3

  • SHA1

    4b4ce6e877152d1c6a00f20d927651c872803b8f

  • SHA256

    cdfa082e4d6fa493fe58e94542e5e20c5b87fca8d6940aa98b57811a0417f6b3

  • SHA512

    b99a6788c7a97bde4d273804eb4aefc077f72c7642ab5bce41891a844ebfd90c5dbb2e6a0c1652ab982d5bc7a096863ec97eaf6ec7c1b8000f95f72459100edf

  • SSDEEP

    49152:CdKfTn6v+JtTF+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

      cdfa082e4d6fa493fe58e94542e5e20c5b87fca8d6940aa98b57811a0417f6b3

    • Size

      1.9MB

    • MD5

      1922fee9fa78a6fe8008a5a2e7794cb3

    • SHA1

      4b4ce6e877152d1c6a00f20d927651c872803b8f

    • SHA256

      cdfa082e4d6fa493fe58e94542e5e20c5b87fca8d6940aa98b57811a0417f6b3

    • SHA512

      b99a6788c7a97bde4d273804eb4aefc077f72c7642ab5bce41891a844ebfd90c5dbb2e6a0c1652ab982d5bc7a096863ec97eaf6ec7c1b8000f95f72459100edf

    • SSDEEP

      49152:CdKfTn6v+JtTF+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