Analysis

  • max time kernel
    161s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 09:15

General

  • Target

    39d532e1ca7749336fd3f7b4c3d800331cf673dcdc2236e6ab67435372dba2af.xls

  • Size

    224KB

  • MD5

    55bab4d034e974c339188b6ae5e192e3

  • SHA1

    8a2aed7b508518fd90ce678b7dd56be465f7f97a

  • SHA256

    39d532e1ca7749336fd3f7b4c3d800331cf673dcdc2236e6ab67435372dba2af

  • SHA512

    0bfe2572cb44418e2b60d10852209736996d1a308336810dd37af57254b3596277cf32fb11490eda4fa981e75b8e30cc5fa67475e1cd277099b2e7d3386ef84e

  • SSDEEP

    3072:hJMZuQ3A7i1EyUPEWVbrEuQ7ITk9SEdJQXwPekz5O1:hwx3NfN

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 4 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 5 IoCs
  • Suspicious use of WriteProcessMemory 20 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\39d532e1ca7749336fd3f7b4c3d800331cf673dcdc2236e6ab67435372dba2af.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:1824
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1604
    • 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:740
    • 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:1636
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\System32\wscript.exe" E:\KK\39d532e1ca7749336fd3f7b4c3d800331cf673dcdc2236e6ab67435372dba2af_Search.vbs
      2⤵
      • Process spawned unexpected child process
      PID:1332

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/740-221-0x0000000000000000-mapping.dmp
  • memory/1332-312-0x0000000000000000-mapping.dmp
  • memory/1604-223-0x0000000000000000-mapping.dmp
  • memory/1636-222-0x0000000000000000-mapping.dmp
  • memory/1824-220-0x0000000000000000-mapping.dmp
  • memory/1980-58-0x00000000767B1000-0x00000000767B3000-memory.dmp
    Filesize

    8KB

  • memory/1980-59-0x0000000072C2D000-0x0000000072C38000-memory.dmp
    Filesize

    44KB

  • memory/1980-54-0x000000002FD11000-0x000000002FD14000-memory.dmp
    Filesize

    12KB

  • memory/1980-57-0x0000000072C2D000-0x0000000072C38000-memory.dmp
    Filesize

    44KB

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

    64KB

  • memory/1980-55-0x0000000071C41000-0x0000000071C43000-memory.dmp
    Filesize

    8KB

  • memory/1980-313-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-314-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-315-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-316-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-338-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-360-0x00000000056C0000-0x00000000057C0000-memory.dmp
    Filesize

    1024KB

  • memory/1980-430-0x0000000072C2D000-0x0000000072C38000-memory.dmp
    Filesize

    44KB