General

  • Target

    f3762122a80ea2c13c7bba845ec8cf682c138640110c997d4a399a07f35509ca

  • Size

    2.0MB

  • Sample

    240523-as4xlseh83

  • MD5

    ebb567520e63719e70a1dd8bb117ec49

  • SHA1

    d2e104c2cdab97b0e7f50535a2692bfb1811b1b5

  • SHA256

    f3762122a80ea2c13c7bba845ec8cf682c138640110c997d4a399a07f35509ca

  • SHA512

    787b1fa13926b0119b4319c040400c374b808d3c2e4685d8ee6e2220fe37cbc0afedefbbda43476632f1f7ad75e7ea7ddf4fee1f818823b9102f7b275a40bc78

  • SSDEEP

    49152:7QzHt472DxJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtztIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      f3762122a80ea2c13c7bba845ec8cf682c138640110c997d4a399a07f35509ca

    • Size

      2.0MB

    • MD5

      ebb567520e63719e70a1dd8bb117ec49

    • SHA1

      d2e104c2cdab97b0e7f50535a2692bfb1811b1b5

    • SHA256

      f3762122a80ea2c13c7bba845ec8cf682c138640110c997d4a399a07f35509ca

    • SHA512

      787b1fa13926b0119b4319c040400c374b808d3c2e4685d8ee6e2220fe37cbc0afedefbbda43476632f1f7ad75e7ea7ddf4fee1f818823b9102f7b275a40bc78

    • SSDEEP

      49152:7QzHt472DxJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtztIuoITsdZ

    • 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