Analysis
- max time kernel
195s - max time network
297s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
07/06/2024, 02:15
General
- Target f77202c029e5db1f7f2a29f2735aba8d40a13b0977c961c5a6133db203c136d8.exe
- Size 309KB
- Sample240607-cpmv2ahb32
- SHA256 f77202c029e5db1f7f2a29f2735aba8d40a13b0977c961c5a6133db203c136d8
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).
- 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\f77202c029e5db1f7f2a29f2735aba8d40a13b0977c961c5a6133db203c136d8.exe"C:\Users\Admin\AppData\Local\Temp\f77202c029e5db1f7f2a29f2735aba8d40a13b0977c961c5a6133db203c136d8.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\FBKEHJEGCF.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\FBKEHJEGCF.exe"C:\Users\Admin\AppData\Local\Temp\FBKEHJEGCF.exe"3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
FBKEHJEGCF.exe
mozglue.dll
nss3.dll
memory/4944-3-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4944-2-0x0000000001D10000-0x0000000001D37000-memory.dmp
memory/4944-1-0x0000000001E80000-0x0000000001F80000-memory.dmp
memory/4944-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4944-73-0x0000000000400000-0x000000000063B000-memory.dmp
memory/4944-72-0x0000000000400000-0x0000000001BC7000-memory.dmp