Analysis

  • max time kernel
    119s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 12:44

General

  • Target

    c705502b165cce5aada163d5e4708f78c541d93681356eefc95aef7aa0e7befb.xls

  • Size

    203KB

  • MD5

    7a5f02c67dec58466c91016d73002f95

  • SHA1

    2f3c81b68c89ddbae9ee90d07974b765901e02a4

  • SHA256

    c705502b165cce5aada163d5e4708f78c541d93681356eefc95aef7aa0e7befb

  • SHA512

    8e7b52e91cc9a6da9cfccde703a10baad181e2f50eac2a3ff928d79710894ae700c31598599c451610069fd3b6a1417192a44ad1beec5b8ea927482d4c19c408

  • SSDEEP

    6144:+5EFbPu1iIFb3SAYBO2ACy6VwDR+0OxwhydmTgEW:fmTn

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\c705502b165cce5aada163d5e4708f78c541d93681356eefc95aef7aa0e7befb.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1224
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1648
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:840
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1676
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:1760
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        2⤵
        • Process spawned unexpected child process
        PID:1832

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Hidden Files and Directories

    1
    T1158

    Defense Evasion

    Modify Registry

    1
    T1112

    Hidden Files and Directories

    1
    T1158

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/840-221-0x0000000000000000-mapping.dmp
    • memory/1224-225-0x0000000072BBD000-0x0000000072BC8000-memory.dmp
      Filesize

      44KB

    • memory/1224-55-0x0000000071BD1000-0x0000000071BD3000-memory.dmp
      Filesize

      8KB

    • memory/1224-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1224-57-0x0000000072BBD000-0x0000000072BC8000-memory.dmp
      Filesize

      44KB

    • memory/1224-58-0x0000000076711000-0x0000000076713000-memory.dmp
      Filesize

      8KB

    • memory/1224-387-0x0000000072BBD000-0x0000000072BC8000-memory.dmp
      Filesize

      44KB

    • memory/1224-54-0x000000002F931000-0x000000002F934000-memory.dmp
      Filesize

      12KB

    • memory/1224-386-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1648-60-0x000007FEFC581000-0x000007FEFC583000-memory.dmp
      Filesize

      8KB

    • memory/1648-59-0x0000000000000000-mapping.dmp
    • memory/1676-224-0x0000000000000000-mapping.dmp
    • memory/1760-222-0x0000000000000000-mapping.dmp
    • memory/1832-223-0x0000000000000000-mapping.dmp