Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    26-03-2022 06:22

General

  • Target

    ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe

  • Size

    2.3MB

  • MD5

    f8c69df94419c5ba3460568086f4ad77

  • SHA1

    24acca8e69f8b99dd9b3db8d75a58b2aa4d33011

  • SHA256

    ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb

  • SHA512

    54ce4e9e52fa64123c75317a405c6b2e1a2f639f4deea1b8c76f13e34157ce36f3f361c1c3b3d9d5d9640e35a7b5139f66a86d3b99449c6562d218c0183a2432

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe
    "C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3144
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xCtDXgUtklECz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF55A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4292
    • C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe
      "C:\Users\Admin\AppData\Local\Temp\ac4838da38ffb7ca95d3c7a6d4472577f8a37f575f68151db6c5aee8175bf8cb.exe"
      2⤵
        PID:3252
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3252 -s 968
          3⤵
          • Program crash
          PID:2056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3252 -ip 3252
      1⤵
        PID:4688

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3144-130-0x0000000000970000-0x0000000000BC2000-memory.dmp

        Filesize

        2.3MB

      • memory/3144-131-0x0000000005560000-0x00000000055FC000-memory.dmp

        Filesize

        624KB

      • memory/3144-132-0x0000000005BB0000-0x0000000006154000-memory.dmp

        Filesize

        5.6MB

      • memory/3144-133-0x00000000056A0000-0x0000000005732000-memory.dmp

        Filesize

        584KB

      • memory/3144-134-0x0000000005610000-0x000000000561A000-memory.dmp

        Filesize

        40KB

      • memory/3144-135-0x0000000005830000-0x0000000005886000-memory.dmp

        Filesize

        344KB

      • memory/3252-139-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB