Analysis

  • max time kernel
    104s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 14:54

General

  • Target

    6b33c48a2197ef65949d67fa2130044b07cf7e88246c4b150b46fe6d8202bc0f.xls

  • Size

    93KB

  • MD5

    d0e2a8ed17a9c9f9b73feada57039a86

  • SHA1

    bd078bdb3468d807375bb15b7d5ffd189dd0a2e7

  • SHA256

    6b33c48a2197ef65949d67fa2130044b07cf7e88246c4b150b46fe6d8202bc0f

  • SHA512

    e28941d405fff95b2383402318cde7b8a702752a9e2471dae511e47ebbf979ba65d51158bcee6ad5aed5a208a80bae90dfffdd4954d4912d870ba45627018eda

  • SSDEEP

    1536:EppppF7lbRoWVbrzQ1VIHITkiD2EmO/WoF1ZXmSM2M/M/jUR:nWVbrzQHIHITkDHkwl5kru

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 16 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\6b33c48a2197ef65949d67fa2130044b07cf7e88246c4b150b46fe6d8202bc0f.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:2028
    • 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:1744
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:344
    • 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:1736
    • 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:544

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/344-222-0x0000000000000000-mapping.dmp
  • memory/544-221-0x0000000000000000-mapping.dmp
  • memory/1736-220-0x0000000000000000-mapping.dmp
  • memory/1744-219-0x0000000000000000-mapping.dmp
  • memory/2028-54-0x000000002F651000-0x000000002F654000-memory.dmp
    Filesize

    12KB

  • memory/2028-55-0x0000000070E91000-0x0000000070E93000-memory.dmp
    Filesize

    8KB

  • memory/2028-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2028-57-0x0000000071E7D000-0x0000000071E88000-memory.dmp
    Filesize

    44KB

  • memory/2028-58-0x0000000075A11000-0x0000000075A13000-memory.dmp
    Filesize

    8KB

  • memory/2028-383-0x0000000071E7D000-0x0000000071E88000-memory.dmp
    Filesize

    44KB

  • memory/2028-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2028-385-0x0000000071E7D000-0x0000000071E88000-memory.dmp
    Filesize

    44KB