Analysis

  • max time kernel
    135s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/03/2022, 10:14

General

  • Target
    8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe
  • Size 6.2MB
  • Sample220319-l9pd2affcm
  • SHA256 8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 IoCs
  • 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 42 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe
    "C:\Users\Admin\AppData\Local\Temp\8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3268
    • C:\Users\Admin\AppData\Local\Temp\8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe
      "C:\Users\Admin\AppData\Local\Temp\8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2260
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\8e620f13b7ff8520515c3ae36055af3b0bab7e998ebd567ae78bf45ab0f9f599.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3736

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/2260-146-0x00000000059E3000-0x00000000059E5000-memory.dmp

        memory/2260-138-0x00000000059E0000-0x00000000059E1000-memory.dmp

        memory/2260-143-0x0000000007500000-0x000000000750A000-memory.dmp

        memory/2260-142-0x0000000007660000-0x00000000076B0000-memory.dmp

        memory/2260-135-0x0000000000400000-0x0000000000486000-memory.dmp

        memory/2260-141-0x00000000759B0000-0x00000000759C2000-memory.dmp

        memory/2260-137-0x00000000750D0000-0x0000000075880000-memory.dmp

        memory/2260-140-0x0000000006D10000-0x0000000006D76000-memory.dmp

        memory/2260-139-0x0000000005E20000-0x0000000005EB2000-memory.dmp

        memory/3268-130-0x00000000005E0000-0x0000000000C12000-memory.dmp

        memory/3268-131-0x00000000750D0000-0x0000000075880000-memory.dmp

        memory/3268-134-0x0000000005570000-0x000000000560C000-memory.dmp

        memory/3268-133-0x0000000005440000-0x00000000059E4000-memory.dmp

        memory/3268-132-0x00000000059F0000-0x0000000005F94000-memory.dmp

        memory/3736-148-0x0000000002A30000-0x0000000002A31000-memory.dmp

        memory/3736-154-0x0000000070370000-0x00000000703BC000-memory.dmp

        memory/3736-144-0x0000000004DB0000-0x0000000004DE6000-memory.dmp

        memory/3736-147-0x00000000750D0000-0x0000000075880000-memory.dmp

        memory/3736-149-0x0000000002A32000-0x0000000002A33000-memory.dmp

        memory/3736-150-0x0000000005AB0000-0x0000000005AD2000-memory.dmp

        memory/3736-151-0x0000000005B60000-0x0000000005BC6000-memory.dmp

        memory/3736-152-0x0000000006360000-0x000000000637E000-memory.dmp

        memory/3736-153-0x0000000006920000-0x0000000006952000-memory.dmp

        memory/3736-145-0x0000000005420000-0x0000000005A48000-memory.dmp

        memory/3736-155-0x0000000006900000-0x000000000691E000-memory.dmp

        memory/3736-156-0x0000000002A35000-0x0000000002A37000-memory.dmp

        memory/3736-157-0x000000007FCD0000-0x000000007FCD1000-memory.dmp

        memory/3736-158-0x0000000007D30000-0x00000000083AA000-memory.dmp

        memory/3736-159-0x00000000076E0000-0x00000000076FA000-memory.dmp

        memory/3736-160-0x0000000007750000-0x000000000775A000-memory.dmp

        memory/3736-161-0x0000000007960000-0x00000000079F6000-memory.dmp

        memory/3736-162-0x0000000007910000-0x000000000791E000-memory.dmp

        memory/3736-163-0x0000000007A20000-0x0000000007A3A000-memory.dmp

        memory/3736-164-0x0000000007A00000-0x0000000007A08000-memory.dmp