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Analysis

  • max time kernel
    124s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 20:37

General

  • Target

    31c071b2a25fff1a3dcac4c5c4aa4182f9df73802a8b92d9bd09bfb78354711f.exe

  • Size

    143KB

  • MD5

    c20f60dede72ffcca33f9b097ce0c84b

  • SHA1

    c6c2eb78172dd416dcebe2e47f92220d800b8fe4

  • SHA256

    31c071b2a25fff1a3dcac4c5c4aa4182f9df73802a8b92d9bd09bfb78354711f

  • SHA512

    409e8002db817ddbe5593650d0764be93e1fa719145340f136bff84f05f90b24858d08a382d4f99bf5abd920d9e49b450827584289775c2156af46ed0eafc2b2

  • SSDEEP

    3072:M1i/NU8bOMYcYYcmy5cU+gTn6HOjDhWrzvvQwlgO5v1i/NU82OMYcYYamv5b:6i/NjO5YBgegD0PHzSwi/N+O7

Score
9/10

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 4 IoCs
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 39 IoCs
  • Modifies Internet Explorer start page 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • Views/modifies file attributes 1 TTPs 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31c071b2a25fff1a3dcac4c5c4aa4182f9df73802a8b92d9bd09bfb78354711f.exe
    "C:\Users\Admin\AppData\Local\Temp\31c071b2a25fff1a3dcac4c5c4aa4182f9df73802a8b92d9bd09bfb78354711f.exe"
    1⤵
    • Modifies Installed Components in the registry
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4548
    • C:\Program Files\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files\Internet Explorer\IEXPLORE.EXE" http://www.212ok.com/Gbook.asp?qita
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4464
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4464 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:4448
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" http://www.ymtuku.com/xg/?tan
      2⤵
      • Modifies Internet Explorer settings
      PID:3592
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:4992
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2672
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:2912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\启动 Internet Explorer 浏览器.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:60
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\启动 Internet Explorer 浏览器.lnk"
        3⤵
        • Views/modifies file attributes
        PID:4908
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:1632
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\「开始」菜单\程序\Internet Explorer.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\「开始」菜单\程序\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:2348
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\WINDOWS\windows.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4928
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\WINDOWS\windows.exe"
        3⤵
        • Drops file in Windows directory
        • Views/modifies file attributes
        PID:2728
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "c:\system.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "c:\system.exe"
        3⤵
        • Views/modifies file attributes
        PID:864
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3988,i,18168883380598738769,14202261231630113808,262144 --variations-seed-version --mojo-platform-channel-handle=4240 /prefetch:8
    1⤵
      PID:4388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\7UY3WOJS\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • C:\WINDOWS\windows.exe

      Filesize

      143KB

      MD5

      22feae5fe8811ca4a8dc886adfb298bd

      SHA1

      4e890c665e02de140087b49a50ff18f544a5c1ea

      SHA256

      8f03b522646edb74fc6902a9aebfd2b6221f197871678b15082920a172dcc144

      SHA512

      4b653846e25319dbac9c953474b895258a480f519c4ca2cd4fcd62b5a05a8ec9ed18e241ea6310aa275099166342541d40f297d251c1fecee97a065c850e7910

    • C:\system.exe

      Filesize

      143KB

      MD5

      1659885ff5e1f676c6fc1904fef8a3e6

      SHA1

      7a76b8b9ee7aafcf83546316cfeb5d7f135d0e62

      SHA256

      45e4e1c070d61f0e42553ffb9e87440c2051aa60b0137ae1e79f9c4d99800527

      SHA512

      580f2b7978447d06bcd966a31ae52d9d9fd50631e8fb554b8b87b059932d00dd9191e105719e742644d0d1d0bbbb2f895e4bfacb6aed870f8be5449fad965a3e

    • memory/4548-0-0x0000000000400000-0x000000000042A000-memory.dmp

      Filesize

      168KB

    • memory/4548-17-0x0000000000400000-0x000000000042A000-memory.dmp

      Filesize

      168KB