Analysis

  • max time kernel
    120s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 02:42

General

  • Target

    f9e2fbc5b8c41b45412b0cd4b8e762d850831a1e4931567691def69a98c257cfN.exe

  • Size

    55KB

  • MD5

    48ff6c57d2e916036b40d137b227a9a0

  • SHA1

    4c31b5082e06afea0afe666f2e85bd5cf25bd14e

  • SHA256

    f9e2fbc5b8c41b45412b0cd4b8e762d850831a1e4931567691def69a98c257cf

  • SHA512

    9e2dd565ac011b612e797f2bd00b7a25aa1ca16f8cfed23b3b46a7e22358f3f3fa910fec2e34a2d7fa85f056104ce97bc4cfcc7ee13e683cc685c3683962556b

  • SSDEEP

    1536:KhBZ1b9c409y1G1i35Bo01i/gcU8eVTOK/YqjYYamvbtb:GZl2zoxV1i/NU82OMYcYYamv5b

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • 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
  • Hide Artifacts: Hidden Files and Directories 1 TTPs 7 IoCs
  • UPX packed file 4 IoCs

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

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 16 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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\f9e2fbc5b8c41b45412b0cd4b8e762d850831a1e4931567691def69a98c257cfN.exe
    "C:\Users\Admin\AppData\Local\Temp\f9e2fbc5b8c41b45412b0cd4b8e762d850831a1e4931567691def69a98c257cfN.exe"
    1⤵
    • Boot or Logon Autostart Execution: Active Setup
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4736
    • 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:3288
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3288 CREDAT:17410 /prefetch:2
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:2172
    • 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:2072
    • 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⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3188
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\All Users\桌面\Internet Explorer.lnk"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2028
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3488
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\桌面\Internet Explorer.lnk"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4836
    • 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⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4376
      • 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⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2960
    • 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⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1224
    • 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⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1136
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Documents and Settings\Admin\「开始」菜单\程序\Internet Explorer.lnk"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:3412
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "C:\WINDOWS\windows.exe"
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\WINDOWS\windows.exe"
        3⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4400
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c attrib +h "c:\system.exe"
      2⤵
      • Hide Artifacts: Hidden Files and Directories
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4092
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "c:\system.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2232

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          Filesize

          471B

          MD5

          ee4ada789158c1e5a14d597cf1d5edd0

          SHA1

          9593aee78d30d51ab93d6a29dc4dc873e0d466b6

          SHA256

          903a6d82bf2fe8951104cf90d9f64aab0fbded30a2246e678a80d07868569b4f

          SHA512

          a6214f62e5089512aeaabab7c4bb38e8663fb55d5f4129c57e726723dad10802ec40c3dc836087713b77c1874c12f177bf2b2998fd3e52f4210c1c5307885c16

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          Filesize

          404B

          MD5

          1349e21be487e7d76cb3ee617fcab5fd

          SHA1

          4d73fb5b90a3942ea11a66b4a4b8115bf588714c

          SHA256

          c12383cab440a96f7f59fa471ceed52236ac1c1473a5c64a632b29d333a0df92

          SHA512

          e5e44809563ea5d39f0f9546419a6fe86aec611146697b4d4aa467ed6be8d07e6bfd1a5f24d0299198d04a80a98c2f7ff0cc77abd504873f30323c5d7197a42c

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DQ67RYHS\suggestions[1].en-US

          Filesize

          17KB

          MD5

          5a34cb996293fde2cb7a4ac89587393a

          SHA1

          3c96c993500690d1a77873cd62bc639b3a10653f

          SHA256

          c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

          SHA512

          e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

        • C:\WINDOWS\windows.exe

          Filesize

          55KB

          MD5

          bd9acad9d942c154b4e614827b4eb438

          SHA1

          bfc9110059019c5acc94b81a85569906b7d03743

          SHA256

          b40b4b8f0e53675b8e3a8a5c3eddcbd2f90f03dda24df1bbc2bed42c4c2c0d6d

          SHA512

          43366e800c6c2578f2ad69d48d64b41a1696d2532a2311a1286d75318ba684e4879ada0e5f3d0499b86012573fe7c829af7df2487429bf2c1a392c367e526ba7

        • C:\system.exe

          Filesize

          55KB

          MD5

          8cc70d6861940f85173e6c51c718924e

          SHA1

          9fb3f9eb5b4cdce0a9846424fad75fc54f897a99

          SHA256

          56d1df9c0d53edc8aa3abba8f7db089f1217ebb5f8867af76f1ceb213f21f97f

          SHA512

          3621af48c031e663651b505afe8d83bae082b7016b31cfdfd79aeccb635d1107803d79057958ccfb9f9ee657dc99d0a46f29f209b78f7a8485a6df1d27f6785a

        • memory/4736-0-0x0000000000400000-0x0000000000429000-memory.dmp

          Filesize

          164KB

        • memory/4736-20-0x0000000000400000-0x0000000000429000-memory.dmp

          Filesize

          164KB