Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 12:12

General

  • Target

    75cf364baa43c9be2a20f5ac9bb9f45027a90d3658e438f92102107446556206.xls

  • Size

    92KB

  • MD5

    29d6bbad5fde307cd3e573e4051942f4

  • SHA1

    9368a3b82c7b4ca8f17cb50d48f32edc5bf61683

  • SHA256

    75cf364baa43c9be2a20f5ac9bb9f45027a90d3658e438f92102107446556206

  • SHA512

    d051571106b994881a4df4a7f339f22a929cc470311dd6c144299926ec49fbff6f316be568463806df822af18c448cf10b5796863217611a9b5e16300117539f

  • SSDEEP

    1536:f666O0/KzoFEWVbrzQ7fxPtGoKTkR623vq1Iq9TJtXwbwx:rZWVbrzQ7f5ZKTk9yeqxJtXwc

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\75cf364baa43c9be2a20f5ac9bb9f45027a90d3658e438f92102107446556206.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:1208
    • 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:840
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1040
    • 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:2020
    • 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:1588

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/840-219-0x0000000000000000-mapping.dmp
  • memory/1040-222-0x0000000000000000-mapping.dmp
  • memory/1208-54-0x000000002F3C1000-0x000000002F3C4000-memory.dmp
    Filesize

    12KB

  • memory/1208-55-0x0000000071301000-0x0000000071303000-memory.dmp
    Filesize

    8KB

  • memory/1208-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1208-57-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB

  • memory/1208-58-0x0000000075591000-0x0000000075593000-memory.dmp
    Filesize

    8KB

  • memory/1208-383-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB

  • memory/1208-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1208-385-0x00000000722ED000-0x00000000722F8000-memory.dmp
    Filesize

    44KB

  • memory/1588-220-0x0000000000000000-mapping.dmp
  • memory/2020-221-0x0000000000000000-mapping.dmp