Analysis
- max time kernel
146s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
10/05/2024, 13:00
General
- Target 2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe
- Size 373KB
- Sample240510-p8nb5abb37
- SHA256 2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538
Malware Config
Extracted
-
stealc
-
http://185.172.128.150
-
url_path
/c698e1bc8a2f5e6d.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 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 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe"C:\Users\Admin\AppData\Local\Temp\2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\usc.0.exe"C:\Users\Admin\AppData\Local\Temp\usc.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 21003⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3260 -ip 32601⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
nss3.dll
usc.0.exe
memory/1020-53-0x00000000042B0000-0x000000000431C000-memory.dmp
memory/1020-1-0x00000000027C0000-0x00000000028C0000-memory.dmp
memory/1020-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/1020-2-0x00000000042B0000-0x000000000431C000-memory.dmp
memory/1020-16-0x0000000000400000-0x0000000002599000-memory.dmp
memory/1020-55-0x0000000000400000-0x000000000046F000-memory.dmp
memory/1020-51-0x00000000027C0000-0x00000000028C0000-memory.dmp
memory/3260-14-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-18-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3260-54-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-60-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-72-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-77-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-15-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-13-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-99-0x0000000000400000-0x0000000002576000-memory.dmp
memory/3260-101-0x0000000000400000-0x0000000002576000-memory.dmp