Analysis
- max time kernel
82s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
02/05/2022, 15:14
General
- Target b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe
- Size 2.0MB
- Sample220502-smp6dafhd5
- SHA256 b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\0F48153F20\Log.txt
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masslogger
- <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 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: 5/2/2022 3:58:17 PM MassLogger Started: 5/2/2022 3:58:12 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> 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 Main Payload 1 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 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
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe"C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\VideoLAN\vlc.exe"'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe"C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe"C:\Users\Admin\AppData\Local\Temp\b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.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
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
b9d5200302ab75b343ea934c8993066e5e414d75201edec551d3e4852b872bd9.exe.log
memory/1088-142-0x00000000060E0000-0x0000000006146000-memory.dmp
memory/1088-150-0x0000000007D30000-0x0000000007DC6000-memory.dmp
memory/1088-133-0x0000000002F00000-0x0000000002F36000-memory.dmp
memory/1088-154-0x0000000007DE0000-0x0000000007DE8000-memory.dmp
memory/1088-144-0x0000000007760000-0x0000000007792000-memory.dmp
memory/1088-137-0x0000000005A00000-0x0000000006028000-memory.dmp
memory/1088-151-0x0000000007CE0000-0x0000000007CEE000-memory.dmp
memory/1088-143-0x00000000067C0000-0x00000000067DE000-memory.dmp
memory/1088-140-0x00000000056F0000-0x0000000005712000-memory.dmp
memory/1088-145-0x00000000706E0000-0x000000007072C000-memory.dmp
memory/1088-148-0x0000000007AB0000-0x0000000007ACA000-memory.dmp
memory/1088-147-0x0000000008100000-0x000000000877A000-memory.dmp
memory/1088-153-0x0000000007DF0000-0x0000000007E0A000-memory.dmp
memory/1088-149-0x0000000007B20000-0x0000000007B2A000-memory.dmp
memory/1088-146-0x0000000006D60000-0x0000000006D7E000-memory.dmp
memory/4512-130-0x0000000000EB0000-0x00000000010AC000-memory.dmp
memory/5104-141-0x0000000005910000-0x0000000005976000-memory.dmp
memory/5104-139-0x0000000005800000-0x000000000589C000-memory.dmp
memory/5104-138-0x0000000005D10000-0x00000000062B4000-memory.dmp
memory/5104-152-0x00000000063B0000-0x0000000006442000-memory.dmp
memory/5104-135-0x0000000000400000-0x000000000049A000-memory.dmp
memory/5104-155-0x00000000075A0000-0x00000000075AA000-memory.dmp
memory/5104-156-0x0000000008940000-0x0000000008990000-memory.dmp