Overview

overview

10

Static

static

f8a2b40eb0...09.exe

windows7_x64

6

f8a2b40eb0...09.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    109s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/04/2022, 15:50

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General

  • Target
    f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.exe
  • Size 3.5MB
  • Sample220415-s9166abdg8
  • SHA256 f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509
  • MD5 SHA1 SHA512
Score
10/10
massloggercollectionpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Admin\AppData\Local\8236ADF044\Log.txt

  • masslogger

Ransom Note
  • <|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 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: 4/15/2022 7:43:13 PM MassLogger Started: 4/15/2022 7:43:10 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Downloader ||> Disabled <|| Binder ||> 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.

    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
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 6 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 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:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    PID:4188
  • C:\Users\Admin\AppData\Local\Temp\f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.exe
    "C:\Users\Admin\AppData\Local\Temp\f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3660
    • C:\Users\Admin\AppData\Local\Temp\f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.exe
      "C:\Users\Admin\AppData\Local\Temp\f8a2b40eb0047a75223c29102904c1404f17d05ec2f6f775b9c1d1c53a98c509.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:2272

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2272-135-0x0000000000400000-0x00000000004B8000-memory.dmp
        Download

        memory/2272-136-0x0000000005840000-0x00000000058DC000-memory.dmp
        Download

        memory/2272-137-0x00000000059D0000-0x0000000005A36000-memory.dmp
        Download

        memory/2272-138-0x0000000005833000-0x0000000005835000-memory.dmp
        Download

        memory/2272-139-0x00000000081A0000-0x00000000081F0000-memory.dmp
        Download

        memory/3660-130-0x0000000000180000-0x000000000050A000-memory.dmp
        Download

        memory/3660-131-0x0000000005430000-0x00000000059D4000-memory.dmp
        Download

        memory/3660-132-0x0000000004F20000-0x0000000004FB2000-memory.dmp
        Download

        memory/3660-133-0x0000000004EC0000-0x0000000004ECA000-memory.dmp
        Download