Analysis

  • max time kernel
    116s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-09-2022 19:51

General

  • Target

    ece507d87a5b2732818a270942864957.exe

  • Size

    124KB

  • MD5

    ece507d87a5b2732818a270942864957

  • SHA1

    4fc0c57622b928125b55dcaaba92d966f9703789

  • SHA256

    01f95e3eacbfef97fd73836f0cc2702dff49fc1da1283afb02231586064e6967

  • SHA512

    e28d3aa2dc16624d0b8f2572eddcb6283b9d48bd0e8f3fc68711ede45226721029891bdbf6006cfb69bb5826a300a6691691b094db54fc25f2dd9bfec4a6b26f

  • SSDEEP

    3072:g1i/NU8bOMYcYYcmy5cU+gTn6HOjDhWrzvvQwlgOks5YmMOMYcYY51i/NU8F:Oi/NjO5YBgegD0PHzSv3Oai/NN

Score
8/10

Malware Config

Signatures

  • 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.

  • 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). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 37 IoCs
  • Modifies Internet Explorer start page 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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\ece507d87a5b2732818a270942864957.exe
    "C:\Users\Admin\AppData\Local\Temp\ece507d87a5b2732818a270942864957.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:4988
    • 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 behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4944
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4944 CREDAT:17410 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1540
    • 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:2420
    • 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:260
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:1244
    • 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:1820
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
        3⤵
        • Views/modifies file attributes
        PID:3512
    • 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:3516
      • 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:4568
    • 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:3400
      • 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:1144
    • 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:4804
      • 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:5108
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\WINDOWS\windows.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\WINDOWS\windows.exe"
        3⤵
        • Drops file in Windows directory
        • Views/modifies file attributes
        PID:1536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "c:\system.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2444
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "c:\system.exe"
        3⤵
        • Views/modifies file attributes
        PID:5012

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\WINDOWS\windows.exe

    Filesize

    124KB

    MD5

    73a93efca54574d66f6140853a07c5a4

    SHA1

    c013d4460ecb403187ed91e7c2020bda4735b605

    SHA256

    6e6b30d58bf8e016fe6e03b46a31f15ab0dab96242e1f8e3cb655db15d20eac6

    SHA512

    b1125b8f13676f9111f55fc86b64cc7e856e591182b3ffbec44597f897e61f2d87d4c497c1b5e391f683e0ae311a678394ae9122454f1aac7795d89a904445d9

  • C:\system.exe

    Filesize

    124KB

    MD5

    d2ac516ad501a44b8fc98d00849f089b

    SHA1

    5d02ca637d5a2d2e244bf546914efc580a0e70b0

    SHA256

    52ededf37098c063423c44be0267ff96fcd5ba9ba4a3bb63d377e639618cef2b

    SHA512

    6c46a8ddba500c9346a158af5babeaa16c85bb5d768e3b8a9ba046084285aab2c75a9275b1eba36f08a878a0d236ae2b2a734592d24e47a60fbcf5468a35b61c