Analysis

  • max time kernel
    113s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:44

General

  • Target

    Urgent Inquiry.exe

  • Size

    854KB

  • MD5

    423afce270fc06f139f0b11a4b07d74c

  • SHA1

    43c7bc0130597d9e3f436811843d0dbcae82e8ea

  • SHA256

    5fd83f2a0ab55a807929ded55e138b988f873280876ae15fde0332732b38e2da

  • SHA512

    9775cd5de2c9bc5b3b8dad675cb5700cc89dab62ab3efae47d7979e869db2da703b04e833e31a93cc97e726257c6eb6292e3b2c42fa4dcccc3200fc2f3d1a88f

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\19E979543A\Log.txt

Family

masslogger

Ransom Note
<|| v2.2.0.0 ||> User Name: Admin IP: 154.61.71.13 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 3:03:50 AM MassLogger Started: 5/21/2022 3:03:38 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Urgent Inquiry.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

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    publictkdycaress2y23

Signatures

  • MassLogger

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

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

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 2 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Urgent Inquiry.exe
    "C:\Users\Admin\AppData\Local\Temp\Urgent Inquiry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3920
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KGAREdNtXc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4828
    • C:\Users\Admin\AppData\Local\Temp\Urgent Inquiry.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:1764

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Urgent Inquiry.exe.log

    Filesize

    412B

    MD5

    ad1c7f6525cfeb54c0487efd38b0e26c

    SHA1

    ed3da94723ac7e3828a9e93d68418bb810592f3b

    SHA256

    0a534a3d0fa82e6a427164c5f6e702cac7e4afc9967af9bc5ddba4f84ab33276

    SHA512

    48d625e6be5391d91d95c2850226fe39bb2411cb72139797699cfe126e6b066182e83950a8ea67e63b64a66b0d45f58d8bc97cab0363d55c2fd88c0d1d28009c

  • C:\Users\Admin\AppData\Local\Temp\tmpA8A.tmp

    Filesize

    1KB

    MD5

    3863d73ab1e2576d87f83a90e5f6fcb0

    SHA1

    6d0f420f951bc237b1a22e8b57af0ade7de4c301

    SHA256

    9efe82b2161695e2f322dd700959747f979b894cd3c9e0f9b41c0eb7cef350b7

    SHA512

    0050b4aa4fb91e1987a059125cf60feeeacf894f636dded57e18d26be6082b3c24ca9cfdcf936b33716a43975cbfe03f52e6672c2f15f95e2b8c0d75fdca6a27

  • memory/1764-135-0x0000000000000000-mapping.dmp

  • memory/1764-136-0x0000000000400000-0x00000000004C4000-memory.dmp

    Filesize

    784KB

  • memory/1764-138-0x0000000005520000-0x0000000005AC4000-memory.dmp

    Filesize

    5.6MB

  • memory/1764-139-0x00000000051A0000-0x0000000005206000-memory.dmp

    Filesize

    408KB

  • memory/1764-140-0x0000000006CC0000-0x0000000006CCA000-memory.dmp

    Filesize

    40KB

  • memory/1764-141-0x0000000006CD0000-0x0000000006D20000-memory.dmp

    Filesize

    320KB

  • memory/3920-130-0x0000000000230000-0x000000000030C000-memory.dmp

    Filesize

    880KB

  • memory/3920-131-0x0000000004FE0000-0x000000000507C000-memory.dmp

    Filesize

    624KB

  • memory/3920-132-0x0000000005120000-0x00000000051B2000-memory.dmp

    Filesize

    584KB

  • memory/4828-133-0x0000000000000000-mapping.dmp