Analysis

  • max time kernel
    119s
  • max time network
    197s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:53

General

  • Target

    ZZW00008112020ZD1_DPILpdf.exe

  • Size

    1002KB

  • MD5

    a556bc0ce0bcf11af90c5405f3aa9067

  • SHA1

    c76eeca4dbff9834820c7c4373fd6ad230f7b5b6

  • SHA256

    f1ce8a3c72d7e45300b38de923c0ad45c466ef17a44bec4aad85a4672690eb22

  • SHA512

    783e81cc6c8aa0c8734008e792963f066230648b77b5562ccd97069a9f2a54ac7d4137d93afc2f5b3763e32be07e67a23a1f039d656157360841fb4ae8ab985e

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 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 4:50:39 AM MassLogger Started: 5/21/2022 4:50:32 AM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\ZZW00008112020ZD1_DPILpdf.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> 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

Signatures

  • MassLogger

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

  • MassLogger Main Payload 6 IoCs
  • 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
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ZZW00008112020ZD1_DPILpdf.exe
    "C:\Users\Admin\AppData\Local\Temp\ZZW00008112020ZD1_DPILpdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:624
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IRPLvFRsiE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB6C2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1776
    • C:\Users\Admin\AppData\Local\Temp\ZZW00008112020ZD1_DPILpdf.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:1496

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB6C2.tmp

    Filesize

    1KB

    MD5

    21b5a1799b1ed3844210b47f426ee2f2

    SHA1

    e9fe1059be5dab98b3b94603aa31c309169215f1

    SHA256

    ff1d057a164ee530f5401a9706df3030ae660244a90868bf222c6b233004bf89

    SHA512

    e347eb3400eff137a7c5fd7161c1300387c605242e804ee09031cbfece35f916698ad0318f6bccda34d97039051942f1d89c616f586b68d55be042885a93abe6

  • memory/624-55-0x0000000000420000-0x0000000000430000-memory.dmp

    Filesize

    64KB

  • memory/624-56-0x0000000005300000-0x00000000053AC000-memory.dmp

    Filesize

    688KB

  • memory/624-57-0x00000000054B0000-0x0000000005568000-memory.dmp

    Filesize

    736KB

  • memory/624-54-0x0000000001310000-0x0000000001410000-memory.dmp

    Filesize

    1024KB

  • memory/1496-68-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-60-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-61-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-63-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-65-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-64-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-66-0x00000000004B2EDE-mapping.dmp

  • memory/1496-70-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1496-71-0x0000000000DE0000-0x0000000000E58000-memory.dmp

    Filesize

    480KB

  • memory/1496-72-0x0000000075801000-0x0000000075803000-memory.dmp

    Filesize

    8KB

  • memory/1496-73-0x0000000000AE5000-0x0000000000AF6000-memory.dmp

    Filesize

    68KB

  • memory/1776-58-0x0000000000000000-mapping.dmp