Analysis

  • max time kernel
    124s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    29-03-2022 22:10

General

  • Target

    01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe

  • Size

    1.2MB

  • MD5

    76ae36f688a6e3de990189269dd1be0e

  • SHA1

    44e6d04f717c0f9ec574396fdf282212bf9fd3f0

  • SHA256

    01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979

  • SHA512

    d45f9d74c72a1f245d110ef9acce709222d7557617dc7b2cd1e4a3828feba7dacdc143e40c2563907d6b0ef8749f31bb199cc14c81310ad631f332617bdad108

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 6 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 use of SetThreadContext 1 IoCs
  • 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 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe
    "C:\Users\Admin\AppData\Local\Temp\01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe
      "C:\Users\Admin\AppData\Local\Temp\01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe"
      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:956

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/956-57-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-60-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-65-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-67-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/956-68-0x0000000000DB5000-0x0000000000DC6000-memory.dmp

    Filesize

    68KB

  • memory/1984-54-0x0000000001270000-0x00000000013A6000-memory.dmp

    Filesize

    1.2MB

  • memory/1984-55-0x0000000001180000-0x0000000001218000-memory.dmp

    Filesize

    608KB

  • memory/1984-56-0x0000000000470000-0x000000000048C000-memory.dmp

    Filesize

    112KB