General

  • Target

    CUSTOM FORM E.xls

  • Size

    1.0MB

  • Sample

    230302-nnapvscd2s

  • MD5

    d221ce0d91ef94f55dff3560fe260c45

  • SHA1

    a5fef0be95fafd95a8e95742e10de6e34c52420d

  • SHA256

    367f43f9444ce24cad2611f59e61608566a772fe098d081e20349440010681d7

  • SHA512

    d543a590a5150de7c539ef264017f018c5f0d1c9ae14ce21ec7fc1d260962553beea3186f1856eec5af0be9b5300a4a060cf3c459a4bbff95fc59531057a5ec1

  • SSDEEP

    24576:1LKswByWQmmav30xImiIBJRWQmmav30xBmD9cf9gX1zb1slqxke8:1LKhtQmmQ30AIzgQmmQ30k9Rcq4

Malware Config

Extracted

Family

purecrypter

C2

http://192.3.26.135/uo/Ksagb.png

Extracted

Family

snakekeylogger

Credentials

Targets

    • Target

      CUSTOM FORM E.xls

    • Size

      1.0MB

    • MD5

      d221ce0d91ef94f55dff3560fe260c45

    • SHA1

      a5fef0be95fafd95a8e95742e10de6e34c52420d

    • SHA256

      367f43f9444ce24cad2611f59e61608566a772fe098d081e20349440010681d7

    • SHA512

      d543a590a5150de7c539ef264017f018c5f0d1c9ae14ce21ec7fc1d260962553beea3186f1856eec5af0be9b5300a4a060cf3c459a4bbff95fc59531057a5ec1

    • SSDEEP

      24576:1LKswByWQmmav30xImiIBJRWQmmav30xBmD9cf9gX1zb1slqxke8:1LKhtQmmQ30AIzgQmmQ30k9Rcq4

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Accesses Microsoft Outlook profiles

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks