Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27-02-2024 09:59

General

  • Target

    a8dec65c1ec78b935c3f81d04fd95f7b.xls

  • Size

    149KB

  • MD5

    a8dec65c1ec78b935c3f81d04fd95f7b

  • SHA1

    e3da190108096a2731af84638da23cea90b99c6f

  • SHA256

    3a600f7bdc5f5166c9c20268c83ddd56eb867c17eb290764ada2b6d46e8affa6

  • SHA512

    cc853f1000269715b15e6282ac3b55a462d90bf73ce2e31981cd0c701286b98b079b22bc6c29620684bdb4d672b631cbca87a3ebc54b410303464102b105139d

  • SSDEEP

    3072:uzg0rbx4/LiXkxGUBrpgD8IYPFmw2jcc0lbxOrmjhJsXwT7:UgV1ugIY1

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\a8dec65c1ec78b935c3f81d04fd95f7b.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:2876
    • 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:2344
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1520
    • 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:1580
    • 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:2144

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2876-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2876-1-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB

  • memory/2876-5-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-32-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-34-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-56-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-106-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-99-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-126-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-153-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-181-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-202-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB

  • memory/2876-204-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-242-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-240-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-238-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-260-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-282-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-280-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-315-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-317-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-319-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-346-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-347-0x0000000006060000-0x0000000006160000-memory.dmp

    Filesize

    1024KB

  • memory/2876-350-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2876-351-0x000000007218D000-0x0000000072198000-memory.dmp

    Filesize

    44KB