Analysis

  • max time kernel
    94s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2024 00:20

General

  • Target

    bcfa564970a0050916701f60b133016506893fbce41edb6129be649d0624187aN.exe

  • Size

    232KB

  • MD5

    d7af2da7399318940640686b8754b800

  • SHA1

    21edc3fbcf45bbd6281bad45410b06ed092a8407

  • SHA256

    bcfa564970a0050916701f60b133016506893fbce41edb6129be649d0624187a

  • SHA512

    d7529e8150ea12e34022ebfd5a9d4204643cf4ef5df97c5b11bbfb0213241ef9a8a451e82abba41a47269bc10c1a2240497d4f2d1b244256b06683b603e07baf

  • SSDEEP

    3072:rI1i/NU8bOMYcYYcmy5cU+gTn6HOjDhWrzvvQwlgO5s1i/NU82OMYcYYamv5b:ai/NjO5YBgegD0PHzSni/N+O7

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\bcfa564970a0050916701f60b133016506893fbce41edb6129be649d0624187aN.exe
    "C:\Users\Admin\AppData\Local\Temp\bcfa564970a0050916701f60b133016506893fbce41edb6129be649d0624187aN.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:3676
    • 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:4800
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4800 CREDAT:17410 /prefetch:2
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:4580
    • 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:4424
    • 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:2888
      • 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:2868
    • 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:2340
      • 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:5060
    • 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:2876
      • 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:4028
    • 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:2736
      • 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:4788
    • 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:1224
      • 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:4960
    • 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:3332
      • 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:2720
    • 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:1296
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "c:\system.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8R55UT9S\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\WINDOWS\windows.exe

    Filesize

    232KB

    MD5

    c0735bb0c7e4b23df0486fd440942035

    SHA1

    53ebbd8597b22fb4de99811c66872a40b0dbb6cf

    SHA256

    c046b3c471a95e85d25d737d728f22f4d09d3b64b745305543cab3fa7b18ece5

    SHA512

    84dc1b04247a3b49b5b93055470c366803999abcacb32a82bb690ddfb13b6c623431b80a7674c4b38eaff1899726ace5620296727b04bf3ce759057f2c7fdf6d

  • C:\system.exe

    Filesize

    232KB

    MD5

    83bbdc321d65d1fa8218725b66eb37a4

    SHA1

    b611ab0b717431d999cb7fe0ba430de1d8f0156e

    SHA256

    98adfe511085c9f291dd9b769410cc71a6abfda8ffdf2ef3d8f1eaf21bf464a2

    SHA512

    5f59b52143f93a41371538d79eb7336cb14eff5206a0afd253a9cb0f6dbf253a9340d37c7bc8fdc588028fa1b5b7daf059647c8994293ec929143b686f70cebc

  • memory/3676-0-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/3676-20-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB