Analysis
- max time kernel
193s - max time network
300s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
16/05/2024, 22:51
General
- Target 2aab2ca39749b21877d1c52526009f9f5d251d934205e9f671a9e84cecd55afa.exe
- Size 778KB
- Sample240516-2s588ace81
- SHA256 2aab2ca39749b21877d1c52526009f9f5d251d934205e9f671a9e84cecd55afa
Malware Config
Extracted
-
stealc
-
zzvv
-
http://23.88.106.134
-
url_path
/c73eed764cc59dcb.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- 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.
- Suspicious use of SetThreadContext 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 4 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2aab2ca39749b21877d1c52526009f9f5d251d934205e9f671a9e84cecd55afa.exe"C:\Users\Admin\AppData\Local\Temp\2aab2ca39749b21877d1c52526009f9f5d251d934205e9f671a9e84cecd55afa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mozglue.dll
nss3.dll
memory/4648-2-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4648-5-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4648-6-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4648-7-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4648-65-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4768-0-0x00000000004E0000-0x00000000004E1000-memory.dmp
memory/4768-1-0x00000000004E0000-0x00000000004E1000-memory.dmp
memory/4768-3-0x00000000004E0000-0x00000000004E1000-memory.dmp