Analysis

  • max time kernel
    122s
  • 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

    7eb33aef2c2db992c4ddcd8e3ce531da3c6216b22a7800ff302ff72aaf538b75.xls

  • Size

    234KB

  • MD5

    aacff3fefa41ad1200de0c7f9d737459

  • SHA1

    1aa4f8b67ef4d4b6e88912f99b55598b732f7354

  • SHA256

    7eb33aef2c2db992c4ddcd8e3ce531da3c6216b22a7800ff302ff72aaf538b75

  • SHA512

    c712a98169cb678d7fcadd9ef83bc67d82ddfdaba31fe48705a273e9442957490434d32d10a03d94505b686aa5dc57250d88633ced63a404b9f7693ac428cf47

  • SSDEEP

    6144:m5EFbPu1iIFb3SAYBO2ACy6VB6SHFOovWy4pdqb/t9G:epdqb/L

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 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\7eb33aef2c2db992c4ddcd8e3ce531da3c6216b22a7800ff302ff72aaf538b75.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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1092
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:952
      • 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:1564
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1908
      • 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:580
      • 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:988

    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/580-223-0x0000000000000000-mapping.dmp
    • memory/952-60-0x0000000000000000-mapping.dmp
    • memory/952-61-0x000007FEFBDB1000-0x000007FEFBDB3000-memory.dmp
      Filesize

      8KB

    • memory/988-224-0x0000000000000000-mapping.dmp
    • memory/1092-66-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1092-58-0x0000000075201000-0x0000000075203000-memory.dmp
      Filesize

      8KB

    • memory/1092-57-0x00000000723ED000-0x00000000723F8000-memory.dmp
      Filesize

      44KB

    • memory/1092-62-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-63-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-64-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-65-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-54-0x000000002F091000-0x000000002F094000-memory.dmp
      Filesize

      12KB

    • memory/1092-67-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-387-0x00000000723ED000-0x00000000723F8000-memory.dmp
      Filesize

      44KB

    • memory/1092-59-0x00000000723ED000-0x00000000723F8000-memory.dmp
      Filesize

      44KB

    • memory/1092-55-0x0000000071401000-0x0000000071403000-memory.dmp
      Filesize

      8KB

    • memory/1092-386-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1092-272-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-271-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-270-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-384-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-383-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1092-385-0x00000000005E0000-0x00000000005E9000-memory.dmp
      Filesize

      36KB

    • memory/1564-222-0x0000000000000000-mapping.dmp
    • memory/1908-225-0x0000000000000000-mapping.dmp