Analysis

  • max time kernel
    50s
  • max time network
    104s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 20:42

General

  • Target

    Valak (1).cab.dll

  • Size

    288KB

  • MD5

    414b7c1771c2ddfb6fd489c44b705d70

  • SHA1

    200394c55ff5e505ac67768ce531c5c205506b72

  • SHA256

    09f9d0b09945af8d89176503973dac5904cb109faeb369456767273f6ad020f7

  • SHA512

    04b4729ddeeb1de07f2949296b38a690e64a1086155dcdd0d0e9c2a358375e95fa976fe1ba73b4a01630ac357dcd8a3119ba953fc8423a287e0c706f4ddde985

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 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (1).cab.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (1).cab.dll",#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1516
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE
        3⤵
          PID:2796
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:1408

      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/1516-0-0x0000000000000000-mapping.dmp

      • memory/2796-1-0x0000000000000000-mapping.dmp