General

  • Target

    02df1457e927ce5d2843c7b0a7db9b52b1eaf5446294fa90df6fcbe1107cbcf2

  • Size

    1.9MB

  • Sample

    240527-1yessabg2x

  • MD5

    35ef102935c0d8ac26e3189b299efa95

  • SHA1

    2bbccff44c8108274798a347491c176fab61e6c0

  • SHA256

    02df1457e927ce5d2843c7b0a7db9b52b1eaf5446294fa90df6fcbe1107cbcf2

  • SHA512

    17ae86b93de3ac3b0ac81ea68e80b6455453eddf8dac445c4703bbb19535fbff402de8f3b40af313f68a069fae9131b2a1e13689cfdde87d2f2f618ee356a103

  • SSDEEP

    49152:CdKfTn6vyJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnZtIuoITsdZ

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

      02df1457e927ce5d2843c7b0a7db9b52b1eaf5446294fa90df6fcbe1107cbcf2

    • Size

      1.9MB

    • MD5

      35ef102935c0d8ac26e3189b299efa95

    • SHA1

      2bbccff44c8108274798a347491c176fab61e6c0

    • SHA256

      02df1457e927ce5d2843c7b0a7db9b52b1eaf5446294fa90df6fcbe1107cbcf2

    • SHA512

      17ae86b93de3ac3b0ac81ea68e80b6455453eddf8dac445c4703bbb19535fbff402de8f3b40af313f68a069fae9131b2a1e13689cfdde87d2f2f618ee356a103

    • SSDEEP

      49152:CdKfTn6vyJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnZtIuoITsdZ

    • 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