Analysis
- max time kernel
74s - max time network
126s - platform
windows10_x64 - resource
win10v200722 - submitted
25/09/2020, 09:52
General
- Target 960ee162a6cb8b6d12a16e6b4e3875ca.exe
- Size 888KB
- Sample200925-ld6nrdncnj
- SHA256 3fcfc9d3ddc98387b890322bf04ac34ff8059831e569eb0238d3dc7a81406e06
Malware Config
Extracted
-
C:\Users\Admin\AppData\Local\94A4C56A47\Log.txt
-
masslogger
- <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.13 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 11:57:16 AM MassLogger Started: 9/25/2020 11:57:12 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\960ee162a6cb8b6d12a16e6b4e3875ca.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> 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.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\960ee162a6cb8b6d12a16e6b4e3875ca.exe"C:\Users\Admin\AppData\Local\Temp\960ee162a6cb8b6d12a16e6b4e3875ca.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ipBITYZyzAGT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp22DB.tmp"2⤵
- Creates scheduled task(s)
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-
C:\Users\Admin\AppData\Local\Temp\960ee162a6cb8b6d12a16e6b4e3875ca.exe"C:\Users\Admin\AppData\Local\Temp\960ee162a6cb8b6d12a16e6b4e3875ca.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/404-27-0x0000000007280000-0x000000000728F000-memory.dmp
memory/404-26-0x0000000008630000-0x0000000008631000-memory.dmp
memory/404-23-0x00000000057F0000-0x00000000057F1000-memory.dmp
memory/404-22-0x0000000005690000-0x00000000056CE000-memory.dmp
memory/404-17-0x0000000073270000-0x000000007395E000-memory.dmp
memory/404-14-0x0000000000400000-0x000000000049A000-memory.dmp
memory/788-6-0x0000000004B10000-0x0000000004B11000-memory.dmp
memory/788-11-0x0000000005AB0000-0x0000000005B48000-memory.dmp
memory/788-10-0x0000000004D80000-0x0000000004D82000-memory.dmp
memory/788-9-0x0000000005930000-0x00000000059E4000-memory.dmp
memory/788-8-0x0000000004B30000-0x0000000004B40000-memory.dmp
memory/788-7-0x0000000004D90000-0x0000000004D91000-memory.dmp
memory/788-0-0x0000000073270000-0x000000007395E000-memory.dmp
memory/788-5-0x0000000004B80000-0x0000000004B81000-memory.dmp
memory/788-4-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
memory/788-3-0x0000000004A00000-0x0000000004A01000-memory.dmp
memory/788-1-0x0000000000160000-0x0000000000161000-memory.dmp