Analysis

  • max time kernel
    112s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 17:14

General

  • Target

    74b4c5b16139fef3b7eb387ec225a2f6b4ae2e11b7f839a2ec2bce3d5f982590.xls

  • Size

    90KB

  • MD5

    014726c0c741a04aa2dc75451e9d5921

  • SHA1

    593aee34382c014c7325d22630f2c6708324145f

  • SHA256

    74b4c5b16139fef3b7eb387ec225a2f6b4ae2e11b7f839a2ec2bce3d5f982590

  • SHA512

    450afec7e6eaf4f28ac2916fe32cb031ebaa4ef0d7f7746e21be84d9a73191a5fb6478ff5de3a7de1151ff79e9ff661b20c75b033291f147d1a4240a0d3c4a18

  • SSDEEP

    1536:DkJCDfuEt2BI3Q2e2sFbvq58pE+2jcc0lbxOqTgZlIhY7nJdJoOd7PJtXwuQj:DvDfuEt2BI3Q2e2sFbvq5U2jcc0lbxOO

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\74b4c5b16139fef3b7eb387ec225a2f6b4ae2e11b7f839a2ec2bce3d5f982590.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:1376
    • 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:808
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1664
    • 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:1656
    • 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:1596

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/808-219-0x0000000000000000-mapping.dmp
  • memory/1376-78-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-68-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-57-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1376-79-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-65-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-67-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-66-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-77-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-69-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-70-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-71-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-74-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-75-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-76-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-72-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-54-0x000000002FAA1000-0x000000002FAA4000-memory.dmp
    Filesize

    12KB

  • memory/1376-58-0x0000000075B61000-0x0000000075B63000-memory.dmp
    Filesize

    8KB

  • memory/1376-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1376-73-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-82-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-83-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-81-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-80-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-86-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-85-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-84-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-87-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-109-0x00000000004BA000-0x00000000004C0000-memory.dmp
    Filesize

    24KB

  • memory/1376-55-0x00000000711D1000-0x00000000711D3000-memory.dmp
    Filesize

    8KB

  • memory/1376-384-0x00000000721BD000-0x00000000721C8000-memory.dmp
    Filesize

    44KB

  • memory/1596-221-0x0000000000000000-mapping.dmp
  • memory/1656-220-0x0000000000000000-mapping.dmp
  • memory/1664-222-0x0000000000000000-mapping.dmp