Analysis

  • max time kernel
    78s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15-04-2022 00:51

General

  • Target

    70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.exe

  • Size

    1.6MB

  • MD5

    aaaf9e059584c8d2537ba2dbda105c73

  • SHA1

    bdcff61aeeef73e153a9498e97ea04b18037799e

  • SHA256

    70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a

  • SHA512

    724f1d5bbdfb67b2209b9da02841513ab30eb00857bcf3d04ea7047e9c4f05b6217e958659cc9d762d76d6905ba1dd812c0c6ce9df45ec476ae5564afad5fead

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 4/15/2022 1:11:11 AM MassLogger Started: 4/15/2022 1:11:00 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Signatures

  • MassLogger

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

  • MassLogger Main Payload 6 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.exe
    "C:\Users\Admin\AppData\Local\Temp\70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Users\Admin\AppData\Local\Temp\70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.exe
      "C:\Users\Admin\AppData\Local\Temp\70854162b5f390eb75d838c3cab070563c62d041256ebdcb3c8d567f1a86e43a.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:1312

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1100-54-0x0000000000C70000-0x0000000000E18000-memory.dmp

    Filesize

    1.7MB

  • memory/1100-55-0x0000000004940000-0x00000000049D0000-memory.dmp

    Filesize

    576KB

  • memory/1100-56-0x0000000000420000-0x000000000043C000-memory.dmp

    Filesize

    112KB

  • memory/1100-68-0x0000000000BA5000-0x0000000000BB6000-memory.dmp

    Filesize

    68KB

  • memory/1312-61-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-60-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-58-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-62-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-63-0x00000000004948CE-mapping.dmp

  • memory/1312-65-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-67-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-57-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1312-69-0x00000000004A0000-0x00000000004E4000-memory.dmp

    Filesize

    272KB

  • memory/1312-70-0x0000000004F85000-0x0000000004F96000-memory.dmp

    Filesize

    68KB

  • memory/1312-71-0x0000000002220000-0x0000000002234000-memory.dmp

    Filesize

    80KB