Analysis
- max time kernel
140s - max time network
130s - platform
windows7_x64 - resource
win7v200722 - submitted
20/08/2020, 06:29
General
- Target RFQ_01NDN8020901.PDF.exe
- Size 523KB
- Sample200820-4vcvb8wbta
- SHA256 34ea4b1bf96a120fd6f9969babeae255483e42a496cdba637c6ef1f44c2b4287
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\D3B3AADFF1\Log.txt
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masslogger
- <|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 8/20/2020 6:30:20 AM MassLogger Started: 8/20/2020 6:30:13 AM Interval: 2 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: Name:AcroRd32, Title:1003634_revX01.pdf - Adobe Reader <|| WD Exclusion ||> Disabled <|| Binder ||> 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.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Uses the VBS compiler for execution 1 TTPs
- 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 8 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 4 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ_01NDN8020901.PDF.exe"C:\Users\Admin\AppData\Local\Temp\RFQ_01NDN8020901.PDF.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Bduxajrh.vbs"2⤵
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\1003634_revX01.pdf"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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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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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/392-1-0x0000000000B20000-0x0000000000B21000-memory.dmp
memory/392-3-0x0000000000400000-0x0000000000401000-memory.dmp
memory/392-4-0x0000000000A80000-0x0000000000AF9000-memory.dmp
memory/392-0-0x0000000074860000-0x0000000074F4E000-memory.dmp
memory/1376-26-0x0000000005FE0000-0x0000000005FE1000-memory.dmp
memory/1376-31-0x0000000006080000-0x0000000006081000-memory.dmp
memory/1376-55-0x0000000006370000-0x0000000006371000-memory.dmp
memory/1376-54-0x0000000006360000-0x0000000006361000-memory.dmp
memory/1376-40-0x0000000006230000-0x0000000006231000-memory.dmp
memory/1376-39-0x0000000006060000-0x0000000006061000-memory.dmp
memory/1376-32-0x0000000006120000-0x0000000006121000-memory.dmp
memory/1376-23-0x00000000027D0000-0x00000000027D1000-memory.dmp
memory/1376-22-0x0000000002650000-0x0000000002651000-memory.dmp
memory/1376-19-0x0000000074860000-0x0000000074F4E000-memory.dmp
memory/1376-20-0x00000000009A0000-0x00000000009A1000-memory.dmp
memory/1376-21-0x0000000004970000-0x0000000004971000-memory.dmp
memory/1876-8-0x0000000002680000-0x0000000002684000-memory.dmp
memory/1952-18-0x0000000000C60000-0x0000000000CD1000-memory.dmp
memory/1952-13-0x0000000074860000-0x0000000074F4E000-memory.dmp
memory/1952-12-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/1952-11-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/1952-9-0x0000000000400000-0x00000000004B8000-memory.dmp