Analysis

  • max time kernel
    53s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:42

General

  • Target

    Valak (10).cab.dll

  • Size

    288KB

  • MD5

    392c11ea740bd9c3e7eea0333533696b

  • SHA1

    c564eabb3eb3993bcbc38e29260e6e9ccf984a2c

  • SHA256

    4e163da81fb95781da7b2489f4efc62c276dae1f468af60a4f66063c8d2dbc56

  • SHA512

    c832c6e9a04cefa5e56d2bc747c4960d1ab798ce06e2f39ff809be40df9c00a5419d33b26320a492453159b83fbd56e311a180873a78583676bff194aaab9f52

Score
10/10

Malware Config

Signatures

  • Valak

    Valak is a JavaScript loader, a link in a chain of distribution of other malware families.

  • Valak JavaScript Loader 2 IoCs
  • JavaScript code in executable 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (10).cab.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (10).cab.dll",#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1664
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE
        3⤵
          PID:1212
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:288

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

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      Downloads

      • C:\Users\Public\CCGYPWTwr.iySAE

        MD5

        6df4cb0a89bdabcf858e7e407e3975f5

        SHA1

        f41a9efe9f3cdce394893d90f564bb26e3cdd494

        SHA256

        c65b67bfe6a5acf6ebfb7f327a6ce8f93bfe5ec579fe783f611a73ce031f7232

        SHA512

        a49817c5b27a75263a57398a17f838e935660d554e6b36d8e11ec20817fd08b532851b527c7255d50556d85e1fa985ed0d766d7103f6178ab8ef8bab561b1a41

      • memory/1212-1-0x0000000000000000-mapping.dmp

      • memory/1212-3-0x0000000002860000-0x0000000002864000-memory.dmp

        Filesize

        16KB

      • memory/1664-0-0x0000000000000000-mapping.dmp