Analysis

  • max time kernel
    118s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    afc70bb7edf0dfe13fe120e7c04301af2b90e1d6fb11fac69ddbe6f000d66148.xls

  • Size

    150KB

  • MD5

    3d0c6cdebd74c4e6d08e526da9bc8770

  • SHA1

    898a89296fce8c5a0651c33615beffef972e2edc

  • SHA256

    afc70bb7edf0dfe13fe120e7c04301af2b90e1d6fb11fac69ddbe6f000d66148

  • SHA512

    4cd44354ffaee044243806094754768f8562d3e6af1ce5fb7944b342f000e8bc5241b8e75c521ebc0759e37642b90251a79f4b3a22db7b596acd73741c250ef2

  • SSDEEP

    3072:5uy2otZwgUd1GI7gbjVoc+7Pi+UEgdrWVbrzQ7dTkDv2JtXwRcekq:8y2otZ61GIiVoc+RUL

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 4 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\afc70bb7edf0dfe13fe120e7c04301af2b90e1d6fb11fac69ddbe6f000d66148.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:960
    • 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:1692
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1008
    • 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:1756
    • 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:940

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/940-68-0x0000000000000000-mapping.dmp
  • memory/960-71-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-77-0x00000000727ED000-0x00000000727F8000-memory.dmp
    Filesize

    44KB

  • memory/960-65-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-58-0x00000000757A1000-0x00000000757A3000-memory.dmp
    Filesize

    8KB

  • memory/960-59-0x00000000727ED000-0x00000000727F8000-memory.dmp
    Filesize

    44KB

  • memory/960-60-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-62-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-61-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-63-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-55-0x0000000071801000-0x0000000071803000-memory.dmp
    Filesize

    8KB

  • memory/960-57-0x00000000727ED000-0x00000000727F8000-memory.dmp
    Filesize

    44KB

  • memory/960-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/960-64-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-76-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/960-75-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-70-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-72-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-54-0x000000002F981000-0x000000002F984000-memory.dmp
    Filesize

    12KB

  • memory/960-73-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/960-74-0x00000000005B3000-0x00000000005B7000-memory.dmp
    Filesize

    16KB

  • memory/1008-69-0x0000000000000000-mapping.dmp
  • memory/1692-66-0x0000000000000000-mapping.dmp
  • memory/1756-67-0x0000000000000000-mapping.dmp