Analysis
- max time kernel
95s - max time network
125s - platform
windows10_x64 - resource
win10 - submitted
25/09/2020, 12:46
General
- Target 316675ee932f3deec4d3eaa36347db03.exe
- Size 870KB
- Sample200925-16efwybe2a
- SHA256 6a164f48d3ed08f48e0817b3e5fe2aa579a2c57e7c7c5ab49a38d7cbd3715ade
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\480F96756F\Log.txt
-
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: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 9/25/2020 12:43:44 PM MassLogger Started: 9/25/2020 12:43:41 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\316675ee932f3deec4d3eaa36347db03.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Downloader ||> Disabled <|| Binder ||> 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 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.
- 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
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\316675ee932f3deec4d3eaa36347db03.exe"C:\Users\Admin\AppData\Local\Temp\316675ee932f3deec4d3eaa36347db03.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vjLIBvBS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE6DB.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\316675ee932f3deec4d3eaa36347db03.exe"C:\Users\Admin\AppData\Local\Temp\316675ee932f3deec4d3eaa36347db03.exe"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1756-9-0x0000000005B10000-0x0000000005BC4000-memory.dmp
memory/1756-1-0x0000000000470000-0x0000000000471000-memory.dmp
memory/1756-4-0x0000000005410000-0x0000000005411000-memory.dmp
memory/1756-5-0x0000000004F10000-0x0000000004F11000-memory.dmp
memory/1756-6-0x00000000028F0000-0x00000000028F1000-memory.dmp
memory/1756-7-0x0000000004FB0000-0x0000000004FB1000-memory.dmp
memory/1756-8-0x0000000004D60000-0x0000000004D63000-memory.dmp
memory/1756-0-0x0000000073580000-0x0000000073C6E000-memory.dmp
memory/1756-3-0x0000000004E70000-0x0000000004E71000-memory.dmp
memory/1756-10-0x0000000005BD0000-0x0000000005C68000-memory.dmp
memory/2640-13-0x0000000000400000-0x000000000049A000-memory.dmp
memory/2640-15-0x0000000073580000-0x0000000073C6E000-memory.dmp
memory/2640-20-0x00000000058C0000-0x00000000058FE000-memory.dmp
memory/2640-21-0x0000000005970000-0x0000000005971000-memory.dmp
memory/2640-24-0x0000000008780000-0x0000000008781000-memory.dmp
memory/2640-25-0x00000000073A0000-0x00000000073AF000-memory.dmp