Analysis

  • max time kernel
    154s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 23:13

General

  • Target

    e2f6d46cc696c8b2aa486b0f11595e363e5bff6c4c3a3bfb46db59e4e5eb3e63.xls

  • Size

    110KB

  • MD5

    74f1c1b2ce1431325481ba927422f761

  • SHA1

    767d211641b14e8ebbbe013473767967b387bc43

  • SHA256

    e2f6d46cc696c8b2aa486b0f11595e363e5bff6c4c3a3bfb46db59e4e5eb3e63

  • SHA512

    95eba633bf241ae0179e447f8062a46b74cb6f238f375c136dfe4df2e32f417038bd581005a9672efca07108df5f4294d27724767087af90bd1e1f28bdf5082b

  • SSDEEP

    3072:9/1gxv7yZmspH7+cclKisUI4ukoRWGNOWVbrz+N+7ITkP5mww33XjUJtXwbMgV:p1gxv7yZmspH7+cclKisUI4ukoRWGNUG

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\e2f6d46cc696c8b2aa486b0f11595e363e5bff6c4c3a3bfb46db59e4e5eb3e63.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:1920
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1940
      • 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:1164
        • C:\Windows\SysWOW64\attrib.exe
          attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
          3⤵
          • Views/modifies file attributes
          PID:1216
      • 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:664
      • 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:1120

    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/664-216-0x0000000000000000-mapping.dmp
    • memory/1120-217-0x0000000000000000-mapping.dmp
    • memory/1164-215-0x0000000000000000-mapping.dmp
    • memory/1216-218-0x0000000000000000-mapping.dmp
    • memory/1920-54-0x000000002F7D1000-0x000000002F7D4000-memory.dmp
      Filesize

      12KB

    • memory/1920-55-0x00000000713D1000-0x00000000713D3000-memory.dmp
      Filesize

      8KB

    • memory/1920-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1920-57-0x00000000723BD000-0x00000000723C8000-memory.dmp
      Filesize

      44KB

    • memory/1920-58-0x0000000076121000-0x0000000076123000-memory.dmp
      Filesize

      8KB

    • memory/1940-59-0x0000000000000000-mapping.dmp
    • memory/1940-60-0x000007FEFBD81000-0x000007FEFBD83000-memory.dmp
      Filesize

      8KB