Analysis
- max time kernel
108s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
20/05/2022, 23:52
General
- Target URGENT ORDER SO 22-2020 WSO-20-03121.exe
- Size 1.6MB
- Sample220520-3wxxpaceck
- SHA256 ebcea3b90af00f67983ebb15abec7e46a480818904a74764aab402da08d7b16b
Malware Config
Extracted
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C:\Users\Admin\AppData\Local\0F48153F20\Log.txt
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masslogger
- <|| v2.4.0.0 ||> 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 6:03:45 AM MassLogger Started: 5/21/2022 6:03:32 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> 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
Extracted
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Protocol
smtp
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Host
mail.privateemail.com
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Port
587
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Username
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Password
@Mexico1.,
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 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
- 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 12 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.exe"C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.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\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1131.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\URGENT ORDER SO 22-2020 WSO-20-03121.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
URGENT ORDER SO 22-2020 WSO-20-03121.exe.log
tmp1131.tmp
memory/2184-130-0x0000000000540000-0x00000000006E0000-memory.dmp
memory/2184-132-0x0000000007A30000-0x0000000007AC2000-memory.dmp
memory/2184-131-0x00000000078F0000-0x000000000798C000-memory.dmp
memory/2772-138-0x0000000000400000-0x00000000004C0000-memory.dmp
memory/2772-140-0x0000000005810000-0x0000000005DB4000-memory.dmp
memory/2772-141-0x0000000005350000-0x00000000053B6000-memory.dmp
memory/2772-142-0x0000000007200000-0x000000000720A000-memory.dmp
memory/2772-143-0x00000000072C0000-0x0000000007310000-memory.dmp