Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27/06/2022, 07:50

General

  • Target
    DEKONT.exe
  • Size 476KB
  • Sample220627-jpac9sbfb5
  • SHA256 67edbb99d3aba4abdd5edb3151171935ac1ceb730fd3227da79c33e3b2ab03c9
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • formbook

Version
  • 4.1

Campaign
  • g3t1

Decoy
  • 369manifestwealth.com

  • centralfloridadecking.com

  • wareadvance.com

  • hellobody.net

  • housemaker.pro

  • kudoki.net

  • peakadventures.net

  • liquidscreeds.world

  • corebenefitsconsultantsllc.com

  • housecondonow.com

  • xn--ah-kta.com

  • evolv3-consulting.com

  • 78688653.com

  • truthvanguard.com

  • locarte.online

  • eighthoursandchange.com

  • polskebojnom.xyz

  • quaypottery.com

  • raintechsg.com

  • westpac-cancel.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Formbook Payload 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1392
    • C:\Users\Admin\AppData\Local\Temp\DEKONT.exe
      "C:\Users\Admin\AppData\Local\Temp\DEKONT.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1648
    • C:\Windows\SysWOW64\mstsc.exe
      "C:\Windows\SysWOW64\mstsc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:524
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
        3⤵
          PID:1512
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
      1⤵
      • Suspicious use of FindShellTrayWindow
      PID:1716

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          yak (20).ico

          • Path C:\Users\Admin\AppData\Local\Temp\yak (20).ico
          • Size 20KB
          • SHA256 b6287df7aff98cb3e5f204ccd5c3e60ad3555b905b4405801885ab8a5ce8f8e0
          • MD5 SHA1 SHA512 SSDEEP

          memory/524-73-0x00000000020E0000-0x00000000023E3000-memory.dmp

          memory/524-72-0x0000000000080000-0x00000000000AF000-memory.dmp

          memory/524-76-0x0000000000080000-0x00000000000AF000-memory.dmp

          memory/524-74-0x0000000002490000-0x0000000002523000-memory.dmp

          memory/524-71-0x0000000000450000-0x0000000000554000-memory.dmp

          memory/892-54-0x0000000000140000-0x00000000001BE000-memory.dmp

          memory/892-55-0x0000000075441000-0x0000000075443000-memory.dmp

          memory/1392-77-0x00000000062A0000-0x0000000006340000-memory.dmp

          memory/1392-75-0x00000000062A0000-0x0000000006340000-memory.dmp

          memory/1392-66-0x0000000006B60000-0x0000000006C6F000-memory.dmp

          memory/1648-61-0x0000000000180000-0x00000000001AF000-memory.dmp

          memory/1648-64-0x0000000000AD0000-0x0000000000DD3000-memory.dmp

          memory/1648-57-0x0000000000180000-0x00000000001AF000-memory.dmp

          memory/1648-59-0x0000000000400000-0x000000000042F000-memory.dmp

          memory/1648-56-0x0000000000180000-0x00000000001AF000-memory.dmp

          memory/1648-65-0x00000000002C0000-0x00000000002D4000-memory.dmp