Analysis
- max time kernel
80s - max time network
144s - platform
windows7_x64 - resource
win7-20220414-en - submitted
15/04/2022, 00:46
General
- Target d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.exe
- Size 1.5MB
- Sample220415-a435fsehfp
- SHA256 d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9
Malware Config
Extracted
-
C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt
-
masslogger
- <|| 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: 4/15/2022 2:59:56 AM MassLogger Started: 4/15/2022 2:59:44 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.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\d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.exe"C:\Users\Admin\AppData\Local\Temp\d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.exe"C:\Users\Admin\AppData\Local\Temp\d7df3a9db627567f9b370001a655b2a8f05a12e6ef179ee386e7bb4c8244bab9.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
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/480-54-0x00000000013E0000-0x000000000155E000-memory.dmp
memory/480-55-0x0000000005960000-0x0000000005A16000-memory.dmp
memory/480-56-0x00000000009A0000-0x00000000009BC000-memory.dmp
memory/828-57-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-58-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-60-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-61-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-62-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-65-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-67-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/828-68-0x0000000000DD0000-0x0000000000E48000-memory.dmp
memory/828-69-0x00000000003C5000-0x00000000003D6000-memory.dmp