Analysis

  • max time kernel
    54s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:42

General

  • Target

    Valak (2).cab.dll

  • Size

    288KB

  • MD5

    eb97ca8128b30794d579d5e8dadc9e81

  • SHA1

    fbd0647d854dee4943951a058570f0455cd59db5

  • SHA256

    7c595d596ff5d190ebc057e41424a433e592d3f894fb913e7722eda0cba3913d

  • SHA512

    61407ffc40309112cda90e5b48cc54545b3c2184a31a2bddb75ac052437b0181b82b9afa294e91aeb3aa01767d277be4c15f95d0236520c77c446673c9fab321

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 (2).cab.dll",#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Valak (2).cab.dll",#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1836
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe //E:jscript "C:\Users\Public\CCGYPWTwr.iySAE
        3⤵
          PID:1512
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:1340

      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/1512-1-0x0000000000000000-mapping.dmp

      • memory/1512-3-0x00000000026B0000-0x00000000026B4000-memory.dmp

        Filesize

        16KB

      • memory/1836-0-0x0000000000000000-mapping.dmp