Analysis

  • max time kernel
    103s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 03:10

General

  • Target

    c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20.xls

  • Size

    327KB

  • MD5

    954f3e7049f47fef2f73eaf529e67ae7

  • SHA1

    f3ff579b4199961db4b6b60480c5fd6d9ae8f4fa

  • SHA256

    c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20

  • SHA512

    328dd00fff7300d39a2f48b879e3eb6e2833bea530162d61290a7e9aa69f364546d1976ff38809ee8c4c86a81e29c1fc4317165e039cd4afd4eb0a23dec03014

  • SSDEEP

    3072:7NOHfhgoYlbuqRmvFwiLuidawDSrAKEViDOCb+fP5tLCFvdj9Hdb3NAzhxs6U7n/:QfsMT07HH

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\c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20.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:832
    • 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:892
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1772
    • 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:1760
    • 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:1472

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/832-54-0x000000002FE11000-0x000000002FE14000-memory.dmp
    Filesize

    12KB

  • memory/832-55-0x0000000071C61000-0x0000000071C63000-memory.dmp
    Filesize

    8KB

  • memory/832-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/832-57-0x0000000072C4D000-0x0000000072C58000-memory.dmp
    Filesize

    44KB

  • memory/832-58-0x0000000076BA1000-0x0000000076BA3000-memory.dmp
    Filesize

    8KB

  • memory/832-383-0x0000000072C4D000-0x0000000072C58000-memory.dmp
    Filesize

    44KB

  • memory/832-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/832-385-0x0000000072C4D000-0x0000000072C58000-memory.dmp
    Filesize

    44KB

  • memory/892-219-0x0000000000000000-mapping.dmp
  • memory/1472-221-0x0000000000000000-mapping.dmp
  • memory/1760-220-0x0000000000000000-mapping.dmp
  • memory/1772-222-0x0000000000000000-mapping.dmp