Analysis

  • max time kernel
    96s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-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 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
  • 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 8 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:2608
    • 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:1932

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\01a3236374f0342d7d40f06914b900f3a4d37b22a4f6b32b3c88090be874c979.exe.log

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • memory/1932-126-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1932-128-0x0000000005490000-0x0000000005522000-memory.dmp

    Filesize

    584KB

  • memory/1932-129-0x0000000005AE0000-0x0000000006084000-memory.dmp

    Filesize

    5.6MB

  • memory/1932-130-0x0000000006390000-0x00000000063F6000-memory.dmp

    Filesize

    408KB

  • memory/1932-131-0x0000000006C60000-0x0000000006CB0000-memory.dmp

    Filesize

    320KB

  • memory/1932-132-0x0000000006BB0000-0x0000000006BBA000-memory.dmp

    Filesize

    40KB

  • memory/1932-133-0x0000000005123000-0x0000000005125000-memory.dmp

    Filesize

    8KB

  • memory/1932-134-0x0000000006EE0000-0x0000000006F7C000-memory.dmp

    Filesize

    624KB

  • memory/2608-124-0x0000000000B90000-0x0000000000CC6000-memory.dmp

    Filesize

    1.2MB