Overview

overview

10

Static

static

scan-2020-...91.exe

windows7_x64

10

scan-2020-...91.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25/05/2022, 01:13

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General

  • Target
    scan-2020-999101991.exe
  • Size 886KB
  • Sample220525-blc1zseaa4
  • SHA256 e9c9ae01876b58d0899264f53d7fff1daf70743db47aaf7dfeca86f7217bfcd8
  • MD5 SHA1 SHA512
Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\AppData\Local\0F48153F20\Log.txt

  • masslogger

Ransom Note
  • <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/25/2022 1:15:30 AM MassLogger Started: 5/25/2022 1:15:27 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\scan-2020-999101991.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> 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 ||> Disabled

Signatures

  • MassLogger

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

    stealerspywaremasslogger
  • 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.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
    collection
  • 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: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\scan-2020-999101991.exe
    "C:\Users\Admin\AppData\Local\Temp\scan-2020-999101991.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3872
    • C:\Users\Admin\AppData\Local\Temp\scan-2020-999101991.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1696

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        scan-2020-999101991.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\scan-2020-999101991.exe.log
        • Size 593B
        • SHA256 bf6ef9732167acdc5f0721d7fc05c0d39be3359eda8bebf08f4145bbca8a22fb
        • MD5 SHA1 SHA512
        Submit Download

        memory/1696-135-0x0000000000400000-0x000000000049A000-memory.dmp
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        memory/1696-137-0x0000000005A20000-0x0000000005A86000-memory.dmp
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        memory/1696-138-0x0000000007340000-0x000000000734A000-memory.dmp
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        memory/1696-139-0x00000000074E0000-0x0000000007530000-memory.dmp
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        memory/3872-130-0x0000000000A00000-0x0000000000AE4000-memory.dmp
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        memory/3872-131-0x0000000007F30000-0x00000000084D4000-memory.dmp
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        memory/3872-132-0x0000000007A30000-0x0000000007AC2000-memory.dmp
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        memory/3872-133-0x00000000089E0000-0x0000000008A7C000-memory.dmp
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