Analysis

  • max time kernel
    101s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2022 14:41

General

  • Target

    e0fb4a07dc5f0dc09615337cd85041b51505655e93446fd6aad285da41a03cca.xls

  • Size

    92KB

  • MD5

    962f6cd74a36b304c218bf6f77e49251

  • SHA1

    5ecf08fbaad64f0b2a81c5f57f1c876015960c50

  • SHA256

    e0fb4a07dc5f0dc09615337cd85041b51505655e93446fd6aad285da41a03cca

  • SHA512

    83cbd0e696dfe2b45a14ac6c894146517f6307c73685c088c27b85463ebce48e4e3d079edb6383776909e23413f90105d648bb9b65651f62d186b8ff17bb90d1

  • SSDEEP

    1536:O1RllFYv1WVb5w2RYIzQ7ITkR62lUIhY7nJdJoOd7cJKXwRZM2M/M2A6:WFQWVbtFzQ7ITk9j2AJKXwA5kT6

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\e0fb4a07dc5f0dc09615337cd85041b51505655e93446fd6aad285da41a03cca.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:1980
    • 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:1508
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:308
    • 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:560
    • 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:1888

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/308-222-0x0000000000000000-mapping.dmp
  • memory/560-220-0x0000000000000000-mapping.dmp
  • memory/1508-219-0x0000000000000000-mapping.dmp
  • memory/1888-221-0x0000000000000000-mapping.dmp
  • memory/1980-54-0x000000002FFD1000-0x000000002FFD4000-memory.dmp
    Filesize

    12KB

  • memory/1980-55-0x00000000710D1000-0x00000000710D3000-memory.dmp
    Filesize

    8KB

  • memory/1980-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1980-57-0x0000000076031000-0x0000000076033000-memory.dmp
    Filesize

    8KB

  • memory/1980-58-0x00000000720BD000-0x00000000720C8000-memory.dmp
    Filesize

    44KB

  • memory/1980-383-0x00000000720BD000-0x00000000720C8000-memory.dmp
    Filesize

    44KB

  • memory/1980-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1980-385-0x00000000720BD000-0x00000000720C8000-memory.dmp
    Filesize

    44KB