Analysis

  • max time kernel
    111s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:38

General

  • Target

    Purchase Order Sample.exe

  • Size

    1.1MB

  • MD5

    62cab4e17234f2f9845bf22b71e39613

  • SHA1

    e2ea503f6a6207c9fb3380a3e8533966616330f0

  • SHA256

    f38a6d59735df60c2612686710b66c44a0042b7df2fe97e048fc6e480ce4848c

  • SHA512

    5f5089905544946fd65efae11a5355ef62e868b5bacae13f08615d38f7c3bb673788610c6026b0e4d645a359d39447bbcba03510a11e731c54876eb18d147e4a

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> User Name: Admin IP: 127.0.0.1 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: 5/21/2022 1:46:46 AM MassLogger Started: 5/21/2022 1:46:17 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Purchase Order Sample.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Downloader ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> 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

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    08085892400

Signatures

  • MassLogger

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

  • 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 42 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 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order Sample.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order Sample.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order Sample.exe
      "{path}"
      2⤵
        PID:4816
      • C:\Users\Admin\AppData\Local\Temp\Purchase Order Sample.exe
        "{path}"
        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:4840

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2432-130-0x0000000000960000-0x0000000000A74000-memory.dmp

      Filesize

      1.1MB

    • memory/2432-131-0x00000000053C0000-0x000000000545C000-memory.dmp

      Filesize

      624KB

    • memory/2432-132-0x0000000005530000-0x00000000055C2000-memory.dmp

      Filesize

      584KB

    • memory/2432-133-0x0000000006200000-0x00000000067A4000-memory.dmp

      Filesize

      5.6MB

    • memory/4816-134-0x0000000000000000-mapping.dmp

    • memory/4840-135-0x0000000000000000-mapping.dmp

    • memory/4840-136-0x0000000000400000-0x000000000049A000-memory.dmp

      Filesize

      616KB

    • memory/4840-137-0x0000000005450000-0x00000000054B6000-memory.dmp

      Filesize

      408KB

    • memory/4840-138-0x0000000007200000-0x000000000720A000-memory.dmp

      Filesize

      40KB

    • memory/4840-139-0x00000000072D0000-0x0000000007320000-memory.dmp

      Filesize

      320KB