Analysis
- max time kernel
79s - max time network
130s - platform
windows10_x64 - resource
win10v200722 - submitted
27/09/2020, 08:10
General
- Target bd60bbc229f4abd69c74feb885b11b79.exe
- Size 1.1MB
- Sample200927-33bmbrdajn
- SHA256 31dbbb21f357a3c24fc9257a46fbf71c42b17e870a8a07d035d74eadb5d47c6b
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: 9/27/2020 10:14:56 AM MassLogger Started: 9/27/2020 10:14:51 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\bd60bbc229f4abd69c74feb885b11b79.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 6 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\bd60bbc229f4abd69c74feb885b11b79.exe"C:\Users\Admin\AppData\Local\Temp\bd60bbc229f4abd69c74feb885b11b79.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\YkbnBRqtCfH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp97CC.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\bd60bbc229f4abd69c74feb885b11b79.exe"C:\Users\Admin\AppData\Local\Temp\bd60bbc229f4abd69c74feb885b11b79.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/424-10-0x0000000005520000-0x0000000005521000-memory.dmp
memory/424-1-0x0000000000570000-0x0000000000571000-memory.dmp
memory/424-7-0x0000000005A20000-0x0000000005A21000-memory.dmp
memory/424-0-0x0000000073A60000-0x000000007414E000-memory.dmp
memory/424-13-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
memory/424-14-0x00000000053E0000-0x00000000053E1000-memory.dmp
memory/424-16-0x0000000005010000-0x0000000005013000-memory.dmp
memory/424-17-0x00000000060A0000-0x0000000006154000-memory.dmp
memory/424-18-0x0000000006310000-0x00000000063A8000-memory.dmp
memory/424-4-0x0000000005480000-0x0000000005481000-memory.dmp
memory/424-3-0x0000000007560000-0x0000000007618000-memory.dmp
memory/2704-21-0x0000000000400000-0x000000000049A000-memory.dmp
memory/2704-24-0x0000000073A60000-0x000000007414E000-memory.dmp
memory/2704-29-0x0000000005320000-0x000000000535E000-memory.dmp
memory/2704-30-0x0000000005410000-0x0000000005411000-memory.dmp
memory/2704-33-0x0000000008260000-0x0000000008261000-memory.dmp
memory/2704-34-0x0000000006E10000-0x0000000006E1F000-memory.dmp