Analysis

  • max time kernel
    96s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15-04-2022 12:36

General

  • Target

    92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.exe

  • Size

    1.9MB

  • MD5

    ae37e6e01136efd82aa5430fbfddbb92

  • SHA1

    28674b6d6dd511a6562692d687dec38ff953e813

  • SHA256

    92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e

  • SHA512

    4e6c6da64e71e3aec08e1786aec4bf2c7fa433002c544fec03a5ab93198f0fec998d428c102683564d2d8f4ed7008ed34f430c205519818be91bfc8ed8739c40

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\8506BBE7FF\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.13 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: 4/15/2022 2:41:27 PM MassLogger Started: 4/15/2022 2:41:13 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Window Searcher ||> Disabled <|| Downloader ||> 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.

  • 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
  • Adds Run key to start application 2 TTPs 1 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 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.exe
    "C:\Users\Admin\AppData\Local\Temp\92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Users\Admin\AppData\Local\Temp\92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.exe
      "C:\Users\Admin\AppData\Local\Temp\92275d7bbd6f18af8311e5d5c9b474fe36fa504f26c4e571282360a3e3a8f34e.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:1544

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1240-54-0x0000000001160000-0x0000000001344000-memory.dmp

    Filesize

    1.9MB

  • memory/1240-55-0x00000000005C5000-0x00000000005D6000-memory.dmp

    Filesize

    68KB

  • memory/1240-56-0x0000000000B20000-0x0000000000BD4000-memory.dmp

    Filesize

    720KB

  • memory/1240-57-0x00000000004E0000-0x00000000004FC000-memory.dmp

    Filesize

    112KB

  • memory/1544-58-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-59-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-61-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-62-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-64-0x00000000004B31FE-mapping.dmp

  • memory/1544-63-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-66-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-68-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1544-69-0x0000000000F50000-0x0000000000FC8000-memory.dmp

    Filesize

    480KB

  • memory/1544-70-0x0000000001085000-0x0000000001096000-memory.dmp

    Filesize

    68KB