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General

  • Target

    99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

  • Size

    2.4MB

  • Sample

    240524-a9nlysfc7v

  • MD5

    591deb3212cb1720fa03640f6257b5dc

  • SHA1

    5ffd579886eae9148141746294e2ee3ae922c8cc

  • SHA256

    99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

  • SHA512

    670374e657a9ba7b81d220e4105316707984ce7f5bfac04f97c473d8f8ef65c137f77fbdc9c889490e89d8823bc1c2add4adda4241f34ca64f27af5336e4e573

  • SSDEEP

    49152:P9Ay1zb37wq+3GQQvFOsAMSgcCNvQE5qh4OLzooa2ZgEPmBTI7pJLOjq5:ay1/7wq+36FBLNvQvm9n2Zm1wp9Om

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

    • Size

      2.4MB

    • MD5

      591deb3212cb1720fa03640f6257b5dc

    • SHA1

      5ffd579886eae9148141746294e2ee3ae922c8cc

    • SHA256

      99ed77594a138de377aa2f032a51ef44e8db6584dca85e0acde90d91c6f230bf

    • SHA512

      670374e657a9ba7b81d220e4105316707984ce7f5bfac04f97c473d8f8ef65c137f77fbdc9c889490e89d8823bc1c2add4adda4241f34ca64f27af5336e4e573

    • SSDEEP

      49152:P9Ay1zb37wq+3GQQvFOsAMSgcCNvQE5qh4OLzooa2ZgEPmBTI7pJLOjq5:ay1/7wq+36FBLNvQvm9n2Zm1wp9Om

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • 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 NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks