Analysis
- max time kernel
147s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 01:58
General
- Target PI 200000679 Rev 3_pdf.exe
- Size 1.1MB
- Sample220521-cd4dmsdga2
- SHA256 a2a4fc12990dcf4a9778f96840b49be84f9563edd2b5209b6dac1ffb2ed8e38d
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt
-
masslogger
- ################################################################# MassLogger v1.3.2.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 5:02:04 AM MassLogger Started: 5/21/2022 5:01:48 AM Interval: 6 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.exe As Administrator: True
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
evra12345
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 32 IoCs
- 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.
- 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
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 27 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.exe"C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.exe"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.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
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
PI 200000679 Rev 3_pdf.exe.log
memory/4224-131-0x0000000007F30000-0x00000000084D4000-memory.dmp
memory/4224-132-0x0000000007B60000-0x0000000007BF2000-memory.dmp
memory/4224-133-0x0000000007B40000-0x0000000007B4A000-memory.dmp
memory/4224-134-0x000000000BB00000-0x000000000BB9C000-memory.dmp
memory/4224-130-0x0000000000720000-0x0000000000838000-memory.dmp
memory/4388-162-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-170-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-140-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-142-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-144-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-146-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-148-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-150-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-152-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-154-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-156-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-158-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-160-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-164-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-166-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-168-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-137-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-172-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-174-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-176-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-178-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-180-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-182-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-184-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-186-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-188-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-190-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-192-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-194-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-196-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-198-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-200-0x0000000000400000-0x00000000004A6000-memory.dmp
memory/4388-639-0x00000000063C0000-0x0000000006426000-memory.dmp
memory/4388-640-0x00000000080A0000-0x00000000080F0000-memory.dmp