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Analysis

  • max time kernel
    177s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 01:50

General

  • Target

    50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe

  • Size

    168KB

  • MD5

    0cd9e8491588e9bf65d2f9c2c953cd50

  • SHA1

    14d311aa47ebbd3eb8c72b0b289d614b365c7141

  • SHA256

    50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905

  • SHA512

    afbe1907bd34bddb11aaeaa4d820243577d922cea2b168aa76d2b587d04a39e66ffe4e9e5968b91dce3cbf6a09ccdd9c99b7230c6583a3cd8d2d39ff65674455

  • SSDEEP

    3072:OTvj/t8bVdipDivEtGSK4KCIByHwntt+PNaA8tnc:OTrqJdyDHtGSK5yHa+F1gc

Score
4/10

Malware Config

Signatures

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 38 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe
    "C:\Users\Admin\AppData\Local\Temp\50c9a604d52048f4ed1dfe847d277d2c305afb710adae8f418e659bc03bfa905.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4852
    • C:\Windows\SysWOW64\Explorer.exe
      Explorer /select,C:\ProgramData\Microsoft\Windows\Start Menu\Programs\XXX\calcx.lnk
      2⤵
        PID:4836
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1476
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:4704

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Program Files\SogouPinyinUp.exe

        Filesize

        14KB

        MD5

        54e9f974ac4ef96572043259326b21fc

        SHA1

        da8deb9e6b39f00548dff9116ce426f1c1e45496

        SHA256

        100f3191193ff237ce9b30ba2c1985d72cad896dcacd1c9df324905893ef8227

        SHA512

        a71b8a526a410bcb0face2131af7d7b64f2bccdb184e72a623eaaa4a24f80f8b5a7a74041104e212fbbab51a18be71b79726ed6121cc8a04c55f396bd484fb5a

      • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\XXX\calcx.lnk

        Filesize

        768B

        MD5

        2ef81127455f204ebca8ca8963b6c913

        SHA1

        d22a543a9feb07fb1df8af096c7ddb2b94b2d36d

        SHA256

        946e84af50bcb85bd9edfacfe26f5e612d2bb28b6bf6c98145fde9e2d03665a7

        SHA512

        422f59849e9d66dfcc6d381759817f5c8d5e99eb9d10e160f32a360c1abbf454e3a7d0569f5a0e5b2ff6aad36637f050986d92ac5400d87c158cc7ddb77ef12a