Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
03/06/2024, 10:03
General
- Target ac6f694d2cb06ebf60e9733821ab1ee853daa2965deee48cde86a829aca0b15f.exe
- Size 343KB
- Sample240603-l3mlvsah2s
- SHA256 ac6f694d2cb06ebf60e9733821ab1ee853daa2965deee48cde86a829aca0b15f
Malware Config
Extracted
-
stealc
-
default12
-
http://185.172.128.170
-
url_path
/7043a0c6a68d9c65.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 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).
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ac6f694d2cb06ebf60e9733821ab1ee853daa2965deee48cde86a829aca0b15f.exe"C:\Users\Admin\AppData\Local\Temp\ac6f694d2cb06ebf60e9733821ab1ee853daa2965deee48cde86a829aca0b15f.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\DAFIEHIEGD.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\DAFIEHIEGD.exe"C:\Users\Admin\AppData\Local\Temp\DAFIEHIEGD.exe"3⤵
- Executes dropped EXE
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2396 -s 24282⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2396 -ip 23961⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
DAFIEHIEGD.exe
memory/2396-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp
memory/2396-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/2396-2-0x00000000009B0000-0x00000000009D7000-memory.dmp
memory/2396-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2396-85-0x0000000000400000-0x000000000068E000-memory.dmp
memory/2396-86-0x0000000000400000-0x000000000063B000-memory.dmp