Analysis

  • max time kernel
    128s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    07-10-2020 21:16

General

  • Target

    wymuq1.cab.dll

  • Size

    193KB

  • MD5

    b1ae8b877682337eda1107fdda092a5f

  • SHA1

    0acd9dfcc8d82e53e6c31ad7af2fe1eeb2ba7836

  • SHA256

    3fd4fb0b21f1d754bd0a1457c76d194a5723e21900bfe6aef75c376079391e98

  • SHA512

    a2ca64c153e81d1da51d45628ceeb94d8d96206757b51ef6afa5019622d5dac037d40fc98843b47127c275239fecd31416b66f7e9f883177b921a0a3aad4dbed

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 1 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\wymuq1.cab.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:832
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\wymuq1.cab.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:276
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe //E:jscript "C:\Users\Public\IdfscyvPV.N_Dya
        3⤵
          PID:768
    • C:\Windows\system32\wbem\WmiApSrv.exe
      C:\Windows\system32\wbem\WmiApSrv.exe
      1⤵
        PID:1940
      • C:\Windows\system32\wbem\WmiApSrv.exe
        C:\Windows\system32\wbem\WmiApSrv.exe
        1⤵
          PID:1708

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

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        Downloads

        • C:\Users\Public\IdfscyvPV.N_Dya

          MD5

          fd0af86fd3e8a72fd440e93083aa089a

          SHA1

          0b3cd092f3e9f0aed4cbd43b9794d90507f1522f

          SHA256

          af1077125ad15df0edbdb95f478547e37ba34854509f8f3ac9c7576ab4728884

          SHA512

          45922109013ad3c9d962946608e442e2d33c60f9d2c2d047f5e2942fbac1f48946002ee659da1afffcee06650c7d09fe81dd632ae134d53c87da11f7119a7fd7

        • memory/276-0-0x0000000000000000-mapping.dmp

        • memory/768-1-0x0000000000000000-mapping.dmp

        • memory/768-3-0x00000000028A0000-0x00000000028A4000-memory.dmp

          Filesize

          16KB