Analysis

  • max time kernel
    42s
  • max time network
    203s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    18-08-2021 06:21

General

  • Target

    HyperX Contract with the YouTube channel Marty.pdf.exe

  • Size

    690.5MB

  • MD5

    1faedbbdaf9f59894654c5969f5cdd3a

  • SHA1

    0c02903ced0c3f61e25a848e935ce8ae14fbac31

  • SHA256

    5e30029b54ec17f048e63d034ff1ae9700ec13c14020d1c2c490b5c126cb3fbd

  • SHA512

    3e5b5274a8934f9fe94198fef0601579291057f2f922c067b2e9158bda634680b8d0a1aa84d084c456f3bb9c18f65bdeaec46d15c8a6580323c660bfefb7771b

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer Payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HyperX Contract with the YouTube channel Marty.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\HyperX Contract with the YouTube channel Marty.pdf.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\HyperX Contract with the YouTube channel Marty.pdf.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1852
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/536-64-0x0000000000000000-mapping.dmp

  • memory/1104-60-0x0000000075551000-0x0000000075553000-memory.dmp

    Filesize

    8KB

  • memory/1104-61-0x0000000000230000-0x000000000029A000-memory.dmp

    Filesize

    424KB

  • memory/1104-62-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1852-63-0x0000000000000000-mapping.dmp