Analysis
- max time kernel
144s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
21/01/2024, 04:29
General
- Target 6c59f6d8524d9cbfb92e4937ce941503.exe
- Size 878KB
- Sample240121-e4a6wsehg2
- SHA256 237f6d600f9ecbd9e8d7f2091ea45734f9204b90c2c10b2837bc82b9fbe89e33
Malware Config
Extracted
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blustealer
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Protocol
smtp
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Host
mail.yekamuhendislik.com
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Port
587
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Username
-
Password
MuhasebE123*
Signatures
- A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
- BluStealer
A Modular information stealer written in Visual Basic.
- A310logger Executable 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- 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 3 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\6c59f6d8524d9cbfb92e4937ce941503.exe"C:\Users\Admin\AppData\Local\Temp\6c59f6d8524d9cbfb92e4937ce941503.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\TjWPgbKZz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8E.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\6c59f6d8524d9cbfb92e4937ce941503.exe"C:\Users\Admin\AppData\Local\Temp\6c59f6d8524d9cbfb92e4937ce941503.exe"2⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
HSOX2RNI02.zip
Fox.exe
credentials.txt
memory/1548-63-0x00007FFF1A100000-0x00007FFF1ABC1000-memory.dmp
memory/1548-55-0x000000001BBB0000-0x000000001BBC0000-memory.dmp
memory/1548-54-0x00007FFF1A100000-0x00007FFF1ABC1000-memory.dmp
memory/1548-53-0x0000000000E40000-0x0000000000EF2000-memory.dmp
memory/2144-5-0x0000000005160000-0x000000000516A000-memory.dmp
memory/2144-1-0x0000000074A10000-0x00000000751C0000-memory.dmp
memory/2144-9-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/2144-10-0x00000000069A0000-0x0000000006A32000-memory.dmp
memory/2144-11-0x0000000008FB0000-0x000000000900C000-memory.dmp
memory/2144-0-0x0000000000680000-0x0000000000762000-memory.dmp
memory/2144-21-0x0000000074A10000-0x00000000751C0000-memory.dmp
memory/2144-2-0x0000000005860000-0x0000000005E04000-memory.dmp
memory/2144-7-0x0000000006410000-0x00000000064AC000-memory.dmp
memory/2144-6-0x00000000052E0000-0x00000000052FC000-memory.dmp
memory/2144-8-0x0000000074A10000-0x00000000751C0000-memory.dmp
memory/2144-4-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/2144-3-0x0000000005170000-0x0000000005202000-memory.dmp
memory/3076-20-0x0000000000400000-0x0000000000456000-memory.dmp
memory/3076-17-0x0000000000400000-0x0000000000456000-memory.dmp
memory/3076-67-0x0000000000400000-0x0000000000456000-memory.dmp