Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2024 10:37

General

  • Target

    bpaymentcopy.exe

  • Size

    765KB

  • MD5

    5205be9a501dae770c6e557b5fdaeebc

  • SHA1

    a8a34796e05ac4ff1a0b92bdbbaedc01e8cedfa5

  • SHA256

    aca540b3ad20e1fd49ec550107eff0c164990de1067a9542daf615465f82c331

  • SHA512

    e7177c8f6562363751dedf374195ed0c59ba478530ba58e2428a62ba40fbae73c9dc9f55cdf8890779a9a848c53d6fedd7bdb9658e995df7331d8eea6a05170d

  • SSDEEP

    12288:LXNrylgwbJqMBSlxaZmvB008Jz1vakTLAJnElBaSP6XQ2lfix4phRDiaZEAmD:MgwkMYxcmUzgkTL2FSPd2ExQhJ

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.britishcrowncourt.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @Hustle007ky1

Signatures

  • HawkEye

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

  • Hawkeye family
  • Detected Nirsoft tools 10 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 8 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 7 IoCs

    Password recovery tool for various web browsers

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 2 IoCs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
    "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
      "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
      2⤵
        PID:2784
      • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
        "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
        2⤵
          PID:2800
        • C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe
          "C:\Users\Admin\AppData\Local\Temp\bpaymentcopy.exe"
          2⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2736
          • C:\Users\Admin\AppData\Roaming\Windows Update.exe
            "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2744
            • C:\Users\Admin\AppData\Roaming\Windows Update.exe
              "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
              4⤵
              • Executes dropped EXE
              PID:2948
            • C:\Users\Admin\AppData\Roaming\Windows Update.exe
              "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
              4⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1048
              • 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"
                5⤵
                • Accesses Microsoft Outlook accounts
                • System Location Discovery: System Language Discovery
                PID:2312
              • 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"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:1472
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1472 -s 180
                  6⤵
                  • Program crash
                  PID:2880

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\SysInfo.txt

        Filesize

        50B

        MD5

        8f1f55a9e2fa4fc9931e78a47d81f0e1

        SHA1

        42d4baf7941041b6dcfb9888b32506abe4f63f51

        SHA256

        63a16e0b3871144e34e91db7c8f44b4f70c47aa1d48e1ec956e0d5451c72b3f3

        SHA512

        9a1426c3a77d93e9d068c27b3b8a5a8616eb91f0f457b6a2ab4652f24618f162c3d26b3b53af2cd827d11382f51b57444783b5040e0ad1db62f5ecf2df57de12

      • \Users\Admin\AppData\Roaming\Windows Update.exe

        Filesize

        765KB

        MD5

        5205be9a501dae770c6e557b5fdaeebc

        SHA1

        a8a34796e05ac4ff1a0b92bdbbaedc01e8cedfa5

        SHA256

        aca540b3ad20e1fd49ec550107eff0c164990de1067a9542daf615465f82c331

        SHA512

        e7177c8f6562363751dedf374195ed0c59ba478530ba58e2428a62ba40fbae73c9dc9f55cdf8890779a9a848c53d6fedd7bdb9658e995df7331d8eea6a05170d

      • memory/1048-54-0x00000000007E0000-0x00000000007E8000-memory.dmp

        Filesize

        32KB

      • memory/1048-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1472-59-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/1472-60-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/2312-58-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2312-56-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2312-55-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2736-11-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2736-16-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-13-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-17-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/2736-18-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/2736-4-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-5-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-21-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/2736-7-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2736-33-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/2736-6-0x0000000000400000-0x0000000000494000-memory.dmp

        Filesize

        592KB

      • memory/2744-31-0x00000000005E0000-0x00000000005F4000-memory.dmp

        Filesize

        80KB

      • memory/2744-30-0x0000000000020000-0x00000000000E8000-memory.dmp

        Filesize

        800KB

      • memory/3012-0-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

        Filesize

        4KB

      • memory/3012-8-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/3012-20-0x0000000073EF0000-0x00000000745DE000-memory.dmp

        Filesize

        6.9MB

      • memory/3012-19-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

        Filesize

        4KB

      • memory/3012-3-0x0000000000350000-0x0000000000358000-memory.dmp

        Filesize

        32KB

      • memory/3012-2-0x00000000002B0000-0x00000000002C4000-memory.dmp

        Filesize

        80KB

      • memory/3012-1-0x0000000000120000-0x00000000001E8000-memory.dmp

        Filesize

        800KB