Analysis

  • max time kernel
    47s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    14-04-2022 13:40

General

  • Target

    c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.exe

  • Size

    3.6MB

  • MD5

    8a4242d7f73d7dcbebc6c64e56fdf8c7

  • SHA1

    b974408e0879b1a2bce0bb9b95e6191d83f64ca2

  • SHA256

    c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0

  • SHA512

    405eab4cad3965f225fb4e34cd877aeedf1e9f860c0f515f368b55b7d7d9a52e3806b737ef5dcb382a62ca815b788b0f3fa603fa8e7de47bc02cc6559110a258

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 127.0.0.1 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: 4/14/2022 5:03:16 PM MassLogger Started: 4/14/2022 5:02:51 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.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 ||> 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 2 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\c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.exe
    "C:\Users\Admin\AppData\Local\Temp\c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.exe
      "C:\Users\Admin\AppData\Local\Temp\c9a8b16591a76cfdccc1a84fae7ec51c02e42e41e2ef8923319692cd2a4f65d0.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:1804

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1804-61-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-57-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-58-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-60-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-63-0x00000000004B31FE-mapping.dmp

  • memory/1804-62-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-65-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-67-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1804-68-0x0000000002310000-0x0000000002388000-memory.dmp

    Filesize

    480KB

  • memory/1804-69-0x00000000050B5000-0x00000000050C6000-memory.dmp

    Filesize

    68KB

  • memory/1988-55-0x00000000051F0000-0x00000000052A6000-memory.dmp

    Filesize

    728KB

  • memory/1988-56-0x0000000000410000-0x000000000042C000-memory.dmp

    Filesize

    112KB

  • memory/1988-54-0x0000000000A80000-0x0000000000E26000-memory.dmp

    Filesize

    3.6MB