Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    14-04-2022 13:34

General

  • Target

    91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10.exe

  • Size

    612KB

  • MD5

    25955b8a6e157d6fed536656890d7a4f

  • SHA1

    975e1ea02130733edeef268fd2d49413fc7252ff

  • SHA256

    91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10

  • SHA512

    e2c1ac12940511ff6119cd31f553405137aedcdfef76b05c7e910b753dc108217e6236ffa4939b4b6045cb663f50c01752026a7075d0a8f0420664506c7346dd

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
  • 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\91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10.exe
    "C:\Users\Admin\AppData\Local\Temp\91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Users\Admin\AppData\Local\Temp\91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10.exe
      "C:\Users\Admin\AppData\Local\Temp\91f31c820c62ae0a81cdc3951afc9087d458928e85124649655a11c9a1453a10.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:1384

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1384-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-59-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-63-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-66-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-68-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1384-69-0x0000000004E25000-0x0000000004E36000-memory.dmp

    Filesize

    68KB

  • memory/1460-55-0x0000000006DE0000-0x0000000006F9E000-memory.dmp

    Filesize

    1.7MB

  • memory/1460-56-0x0000000000B80000-0x0000000000C1A000-memory.dmp

    Filesize

    616KB

  • memory/1460-57-0x0000000000490000-0x00000000004AC000-memory.dmp

    Filesize

    112KB

  • memory/1460-54-0x0000000000E00000-0x0000000000E9E000-memory.dmp

    Filesize

    632KB