Analysis
- max time kernel
147s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 12:30
General
- Target RFQ #031-24062020.exe
- Size 729KB
- Sample220521-ppntjsahgn
- SHA256 851f1641fb283113cc5feb03c807bc82dc4d85ecd22ab8ff091a8edd71bb45ed
Malware Config
Extracted
-
C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt
-
masslogger
- ################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:39:54 PM MassLogger Started: 5/21/2022 2:39:41 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:
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 2 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 18 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe"C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe"1⤵
- Checks computer location settings
- 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\sbNdcfppRTjATG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD2FF.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe"{path}"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
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
RFQ #031-24062020.exe.log
tmpD2FF.tmp
memory/920-139-0x0000000000400000-0x000000000048E000-memory.dmp
memory/920-141-0x0000000005600000-0x0000000005666000-memory.dmp
memory/920-142-0x0000000008420000-0x0000000008470000-memory.dmp
memory/1964-133-0x0000000005150000-0x000000000515A000-memory.dmp
memory/1964-134-0x0000000008D10000-0x0000000008DAC000-memory.dmp
memory/1964-132-0x00000000051A0000-0x0000000005232000-memory.dmp
memory/1964-130-0x0000000000840000-0x00000000008FC000-memory.dmp
memory/1964-131-0x00000000058A0000-0x0000000005E44000-memory.dmp