Analysis

  • max time kernel
    139s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    22/02/2022, 21:46

General

  • Target

    091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe

  • Size

    520KB

  • MD5

    1a842c3d092c167328dfe60d09f21c31

  • SHA1

    ae439a9bc46d6beaeaa14119d4008430f8babd99

  • SHA256

    091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b

  • SHA512

    e882c7a3dd6a239b9cdd77bb8f64405bd3e5b4e13942470db414d46651c1a85213b16c01448ebffc4f8118cace4edc3ae5fdf421abcbbbb3e276e88e7122c9d3

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.molinense.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    jhl88899

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe
    "C:\Users\Admin\AppData\Local\Temp\091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Roaming\Windows Update.exe
      "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
      2⤵
      • Executes dropped EXE
      • Deletes itself
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:832
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
        3⤵
          PID:1724

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/756-64-0x0000000074BC2000-0x0000000074BC4000-memory.dmp

            Filesize

            8KB

          • memory/756-63-0x0000000000C30000-0x0000000000C31000-memory.dmp

            Filesize

            4KB

          • memory/756-62-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

            Filesize

            4KB

          • memory/756-66-0x0000000000C46000-0x0000000000C47000-memory.dmp

            Filesize

            4KB

          • memory/832-67-0x0000000000400000-0x000000000041B000-memory.dmp

            Filesize

            108KB

          • memory/832-69-0x0000000000400000-0x000000000041B000-memory.dmp

            Filesize

            108KB

          • memory/1712-56-0x0000000000C30000-0x0000000000C31000-memory.dmp

            Filesize

            4KB

          • memory/1712-54-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

            Filesize

            4KB

          • memory/1712-57-0x0000000074BC2000-0x0000000074BC4000-memory.dmp

            Filesize

            8KB

          • memory/1712-55-0x0000000076911000-0x0000000076913000-memory.dmp

            Filesize

            8KB

          • memory/1724-70-0x0000000000400000-0x0000000000458000-memory.dmp

            Filesize

            352KB

          • memory/1724-73-0x0000000000400000-0x0000000000458000-memory.dmp

            Filesize

            352KB