Analysis
- max time kernel
120s - max time network
124s - platform
windows7_x64 - resource
win7-20231215-en - resource tags
- submitted
03/02/2024, 21:32
General
- Target SecuriteInfo.com.Win32.TrojanX-gen.21959.9760.exe
- Size 294KB
- Sample240203-1dletsafa6
- SHA256 ea2b0ed5a75cbd3f49b420e553629ac08ea8bd673d5cacc8c004511b84f03d83
Malware Config
Extracted
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stealc
-
http://185.172.128.79
-
url_path
/3886d2276f6914c4.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Deletes itself 1 IoCs
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.TrojanX-gen.21959.9760.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.TrojanX-gen.21959.9760.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.TrojanX-gen.21959.9760.exe" & del "C:\ProgramData\*.dll"" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/2208-2-0x0000000000220000-0x000000000023C000-memory.dmp
memory/2208-1-0x0000000000750000-0x0000000000850000-memory.dmp
memory/2208-3-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2208-4-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2208-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2208-43-0x0000000000750000-0x0000000000850000-memory.dmp
memory/2208-61-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2208-71-0x0000000000400000-0x000000000062E000-memory.dmp
memory/2208-72-0x0000000000750000-0x0000000000850000-memory.dmp