Analysis

  • max time kernel
    79s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 02:49

General

  • Target

    YOUR_DHL.exe

  • Size

    1.3MB

  • MD5

    dd53cd8d7e526a0f6cd3f8b9dbf4dcad

  • SHA1

    a6bef298ec8175ecfcb9d7c673bd258b9ec4859d

  • SHA256

    8b1dca219122f7fb445edb2665d3bb2dac8983e61c380e15fc8e76087503ef84

  • SHA512

    18049e360960360545a2c26a7f874df4194ac9eca1aa90c03c68865493b78088451bbc3bcc980032d9553713f8162456f95db1ecad8f31f52d603605f2468d99

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: 5/21/2022 4:16:35 AM MassLogger Started: 5/21/2022 4:16:24 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\YOUR_DHL.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 ||> Disabled

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    VISION2020

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 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: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\YOUR_DHL.exe
    "C:\Users\Admin\AppData\Local\Temp\YOUR_DHL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\YOUR_DHL.exe
      "C:\Users\Admin\AppData\Local\Temp\YOUR_DHL.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2032

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1668-54-0x0000000000AF0000-0x0000000000C3A000-memory.dmp

    Filesize

    1.3MB

  • memory/1668-55-0x0000000000200000-0x000000000020A000-memory.dmp

    Filesize

    40KB

  • memory/1668-56-0x00000000004C0000-0x00000000004C8000-memory.dmp

    Filesize

    32KB

  • memory/2032-57-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-58-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-60-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-61-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-62-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-63-0x000000000049454E-mapping.dmp

  • memory/2032-65-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-67-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/2032-68-0x00000000004A0000-0x00000000004E4000-memory.dmp

    Filesize

    272KB

  • memory/2032-69-0x00000000762C1000-0x00000000762C3000-memory.dmp

    Filesize

    8KB

  • memory/2032-70-0x0000000004385000-0x0000000004396000-memory.dmp

    Filesize

    68KB

  • memory/2032-71-0x00000000006C0000-0x00000000006D4000-memory.dmp

    Filesize

    80KB