General

  • Target

    041f1d3b90df4dd8310585c9e3e2e470044c4c3131f4b034f882d8c7a8c3a82f

  • Size

    2.0MB

  • Sample

    240520-2kc8gaaa24

  • MD5

    f0f44f36d22189d0baff1af39a7a5d7b

  • SHA1

    d695280a3cd377fc339898de3cb281ceab90ff3d

  • SHA256

    041f1d3b90df4dd8310585c9e3e2e470044c4c3131f4b034f882d8c7a8c3a82f

  • SHA512

    c1be8f54f9a1258266d2bd4af801176685c2d854519b30bc5faef4643dca2bea8eb1bec0bf599a0a178c5d9faac7e17b4a42e8273f58cb2341223de45a6e222d

  • SSDEEP

    49152:IFno/jfwJtTF+TxMoxc1TU+j+dAzGkiT:IFno/jotIuoITsdZT

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      041f1d3b90df4dd8310585c9e3e2e470044c4c3131f4b034f882d8c7a8c3a82f

    • Size

      2.0MB

    • MD5

      f0f44f36d22189d0baff1af39a7a5d7b

    • SHA1

      d695280a3cd377fc339898de3cb281ceab90ff3d

    • SHA256

      041f1d3b90df4dd8310585c9e3e2e470044c4c3131f4b034f882d8c7a8c3a82f

    • SHA512

      c1be8f54f9a1258266d2bd4af801176685c2d854519b30bc5faef4643dca2bea8eb1bec0bf599a0a178c5d9faac7e17b4a42e8273f58cb2341223de45a6e222d

    • SSDEEP

      49152:IFno/jfwJtTF+TxMoxc1TU+j+dAzGkiT:IFno/jotIuoITsdZT

    • 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