Analysis
- max time kernel
113s - max time network
134s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
21/05/2022, 01:27
General
- Target OUR_NEW_.exe
- Size 644KB
- Sample220521-bvdc4scec4
- SHA256 cce8a02cb6b4a8e601af123a1ec418b1ed77228e3929121f9c3b42eda67b8d17
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\EEB932C954\Log.txt
-
masslogger
- <|| v2.4.0.0 ||> 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: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 4:13:02 AM MassLogger Started: 5/21/2022 4:12:46 AM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| 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 ||> Disabled
Extracted
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Protocol
smtp
-
Host
mail.copyrap.com
-
Port
587
-
Username
-
Password
marbella1597
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.
- Accesses Microsoft Outlook profiles 1 TTPs 42 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: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.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\OUR_NEW_.exe"C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2812-130-0x0000000000470000-0x0000000000516000-memory.dmp
memory/2812-131-0x0000000005550000-0x0000000005AF4000-memory.dmp
memory/2812-132-0x0000000004FA0000-0x0000000005032000-memory.dmp
memory/2812-133-0x0000000004ED0000-0x0000000004EDA000-memory.dmp
memory/2812-134-0x00000000073F0000-0x0000000007466000-memory.dmp
memory/2812-135-0x00000000073A0000-0x00000000073BE000-memory.dmp
memory/2812-136-0x00000000075A0000-0x0000000007606000-memory.dmp
memory/4824-138-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/4824-139-0x0000000005030000-0x00000000050CC000-memory.dmp
memory/4824-140-0x0000000006B30000-0x0000000006B80000-memory.dmp