Analysis

  • max time kernel
    144s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 13:06

General

  • Target

    4264f341439e6ef68445fa803daac085a4eb5d416f9f7a2e26795d1326b1d36a.xls

  • Size

    101KB

  • MD5

    de79af87d57c3ebb841298fd07a5128b

  • SHA1

    3fa6e7ddf74e4945d7d0def5189e23368494e398

  • SHA256

    4264f341439e6ef68445fa803daac085a4eb5d416f9f7a2e26795d1326b1d36a

  • SHA512

    f42a58a294eeb5492a01444f8961289f9aee933b1e0c28af162803093bd23772c0f6f379d1a019e696261dc49164457c1c8d6bff975cb9d4ad5b27bbf9fbdd2d

  • SSDEEP

    1536:SOOO/i7vJ1NtMHaBWVbrzQ7axE6jTkR62lIM88tcJtXwR5M2M/MhFD:8BWVbrzQ7a6iTk9njmJtXwE5kvD

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 9 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\4264f341439e6ef68445fa803daac085a4eb5d416f9f7a2e26795d1326b1d36a.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:1992
    • 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:1416
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1636
    • 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:1452
    • 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:748

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/748-221-0x0000000000000000-mapping.dmp
  • memory/1416-219-0x0000000000000000-mapping.dmp
  • memory/1452-220-0x0000000000000000-mapping.dmp
  • memory/1636-222-0x0000000000000000-mapping.dmp
  • memory/1992-78-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-81-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-66-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-69-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-70-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-68-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-67-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-73-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-74-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-72-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-71-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-77-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-54-0x000000002FC81000-0x000000002FC84000-memory.dmp
    Filesize

    12KB

  • memory/1992-76-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-75-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-65-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-82-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-80-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-79-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-85-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-86-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-84-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-83-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-87-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-109-0x0000000000710000-0x0000000000719000-memory.dmp
    Filesize

    36KB

  • memory/1992-58-0x0000000075511000-0x0000000075513000-memory.dmp
    Filesize

    8KB

  • memory/1992-57-0x00000000727BD000-0x00000000727C8000-memory.dmp
    Filesize

    44KB

  • memory/1992-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1992-55-0x00000000717D1000-0x00000000717D3000-memory.dmp
    Filesize

    8KB

  • memory/1992-223-0x00000000727BD000-0x00000000727C8000-memory.dmp
    Filesize

    44KB

  • memory/1992-385-0x00000000727BD000-0x00000000727C8000-memory.dmp
    Filesize

    44KB