Analysis

  • max time kernel
    63s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    18/04/2022, 16:36

General

  • Target

    53b6af1e3ce13734da467d4578a33c7ddbf46733b3daa394bbe3848eedfc185e.exe

  • Size

    2.5MB

  • MD5

    f6a6a736e40072da6930948938b5e719

  • SHA1

    cbd1e530d7c10b7d5bd34bb372d5d4e42c6f721a

  • SHA256

    53b6af1e3ce13734da467d4578a33c7ddbf46733b3daa394bbe3848eedfc185e

  • SHA512

    41381385d2519ab2d89e5861a09795254abae2c77d230fdcecd797951a9c5e5e15ab39956a0a83dc3e59cf8c4d74d77a317958673d86368dc94bdc9d00794baa

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 35 IoCs
  • Adds Run key to start application 2 TTPs 1 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 behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53b6af1e3ce13734da467d4578a33c7ddbf46733b3daa394bbe3848eedfc185e.exe
    "C:\Users\Admin\AppData\Local\Temp\53b6af1e3ce13734da467d4578a33c7ddbf46733b3daa394bbe3848eedfc185e.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • 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:1884
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\53b6af1e3ce13734da467d4578a33c7ddbf46733b3daa394bbe3848eedfc185e.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:632

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/632-59-0x0000000075191000-0x0000000075193000-memory.dmp

    Filesize

    8KB

  • memory/632-60-0x000000006EDA0000-0x000000006F34B000-memory.dmp

    Filesize

    5.7MB

  • memory/1884-54-0x0000000000300000-0x0000000000584000-memory.dmp

    Filesize

    2.5MB

  • memory/1884-55-0x0000000000590000-0x00000000005F8000-memory.dmp

    Filesize

    416KB

  • memory/1884-56-0x0000000004460000-0x00000000044E6000-memory.dmp

    Filesize

    536KB

  • memory/1884-57-0x0000000005295000-0x00000000052A6000-memory.dmp

    Filesize

    68KB