Analysis

  • max time kernel
    104s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:45

General

  • Target

    millenniumbcp-banco.exe

  • Size

    613KB

  • MD5

    12f308ff12631562dd0abf6cae79c168

  • SHA1

    ed68f2e8e35e6c908233f37c5d0637f96d0febc1

  • SHA256

    39ccd0e238c32ee8643fa25aa7b27f77ca8e20d831d666c301c0f9a4063656b5

  • SHA512

    2e9398042275156f8a7741d122cf30000809de543c4a6ec1ace9c2638dea9cd91dd8413d2a6e763dd8954f5af4de78022b8375510d71e3b4d9becc4f51a8a9f4

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:38:07 AM MassLogger Started: 5/21/2022 2:37:55 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\millenniumbcp-banco.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.saritatravels.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sameerb%$321

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
  • Looks up external IP address via web service 1 IoCs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\millenniumbcp-banco.exe
    "C:\Users\Admin\AppData\Local\Temp\millenniumbcp-banco.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tmElfb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3EF5.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:616
    • C:\Users\Admin\AppData\Local\Temp\millenniumbcp-banco.exe
      "{path}"
      2⤵
        PID:1224
      • C:\Users\Admin\AppData\Local\Temp\millenniumbcp-banco.exe
        "{path}"
        2⤵
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2020

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp3EF5.tmp

      Filesize

      1KB

      MD5

      cb0581337a8e25e7c5affef58fa29bac

      SHA1

      88872a10083e3ddd030e22c57bc4d551241b25b2

      SHA256

      d8173b2eb482c82ff261a429d2466891dffdd92a536d46b5869bbac58548d8e2

      SHA512

      748bec8bb7e35d8991233a90b5eb3502d2dfcad6c6d5106fac11b7575d724738b7971f0d9d0c2b8aa4e901449e0dc4272a23337162729ad440ecc734f05509d8

    • memory/616-58-0x0000000000000000-mapping.dmp

    • memory/1648-54-0x00000000001B0000-0x0000000000250000-memory.dmp

      Filesize

      640KB

    • memory/1648-55-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

      Filesize

      8KB

    • memory/1648-56-0x0000000000480000-0x0000000000488000-memory.dmp

      Filesize

      32KB

    • memory/1648-57-0x0000000005EA0000-0x0000000005F36000-memory.dmp

      Filesize

      600KB

    • memory/2020-64-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-61-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-60-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-63-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-65-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-66-0x00000000004894EE-mapping.dmp

    • memory/2020-68-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-70-0x0000000000400000-0x000000000048E000-memory.dmp

      Filesize

      568KB

    • memory/2020-71-0x0000000000960000-0x00000000009A4000-memory.dmp

      Filesize

      272KB

    • memory/2020-73-0x0000000002000000-0x0000000002014000-memory.dmp

      Filesize

      80KB

    • memory/2020-74-0x00000000048E5000-0x00000000048F6000-memory.dmp

      Filesize

      68KB