Analysis

  • max time kernel
    63s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    01/03/2021, 13:16

General

  • Target
    PO# PO2021020371N.exe
  • Size 291KB
  • Sample210301-br4lpy8cla
  • SHA256 9bec30afd640d68be28fef4e6b5abcc14d90b2c7293d7709619b8f9b9e685b7e
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO# PO2021020371N.exe
    "C:\Users\Admin\AppData\Local\Temp\PO# PO2021020371N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Users\Admin\AppData\Local\Temp\PO# PO2021020371N.exe
      "C:\Users\Admin\AppData\Local\Temp\PO# PO2021020371N.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Windows\SysWOW64\cmd.exe
        /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\PO# PO2021020371N.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3084
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 3
          4⤵
          • Delays execution with timeout.exe
          PID:508

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/4268-3-0x0000000000400000-0x000000000043A000-memory.dmp

        memory/4268-6-0x0000000000400000-0x000000000043A000-memory.dmp

        memory/4764-2-0x0000000003190000-0x0000000003191000-memory.dmp

        memory/4764-5-0x0000000002C40000-0x0000000002C79000-memory.dmp