Analysis

  • max time kernel
    72s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:05

General

  • Target

    Inquiry List Info.exe

  • Size

    1.2MB

  • MD5

    a8f7c15919c3b77db76d4d6598b1d86d

  • SHA1

    9e763bd6eabe57c410081551cfcbd257dcdf1fef

  • SHA256

    26f2d26b01147113e1767023ecad609c6b466ce8ede36831362974f808b5f16e

  • SHA512

    4a74a08452137ca45b4b87daecd89ed0223b87cb99bac39f1bdfde968be2d4e89c592899fad3ab445c53883fbabc11647783541e396702f4ab92e29e69d0350b

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> 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 12:58:35 PM MassLogger Started: 5/21/2022 12:58:28 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Inquiry List Info.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 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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\Inquiry List Info.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry List Info.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\Inquiry List Info.exe
      "C:\Users\Admin\AppData\Local\Temp\Inquiry List Info.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:1228

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1228-64-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-65-0x00000000004B34AE-mapping.dmp

  • memory/1228-72-0x00000000050F5000-0x0000000005106000-memory.dmp

    Filesize

    68KB

  • memory/1228-70-0x0000000000B50000-0x0000000000BC8000-memory.dmp

    Filesize

    480KB

  • memory/1228-69-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-59-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-67-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-63-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-60-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1228-62-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1512-54-0x0000000001030000-0x0000000001162000-memory.dmp

    Filesize

    1.2MB

  • memory/1512-55-0x0000000076421000-0x0000000076423000-memory.dmp

    Filesize

    8KB

  • memory/1512-58-0x00000000056E0000-0x00000000057A8000-memory.dmp

    Filesize

    800KB

  • memory/1512-57-0x00000000055F0000-0x00000000056E8000-memory.dmp

    Filesize

    992KB

  • memory/1512-56-0x0000000000310000-0x0000000000320000-memory.dmp

    Filesize

    64KB