Analysis
- max time kernel
147s - max time network
156s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
16/05/2024, 09:47
General
- Target d5a2034b6b2a8e3d9389f97b6140b9aca4f86496ef6b2776f54fdeee776eb42d.exe
- Size 367KB
- Sample240516-lr8d7aeg2y
- SHA256 d5a2034b6b2a8e3d9389f97b6140b9aca4f86496ef6b2776f54fdeee776eb42d
Malware Config
Extracted
-
stealc
-
default100
-
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 2 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 SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 21 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 7 IoCs
- Suspicious use of SendNotifyMessage 7 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d5a2034b6b2a8e3d9389f97b6140b9aca4f86496ef6b2776f54fdeee776eb42d.exe"C:\Users\Admin\AppData\Local\Temp\d5a2034b6b2a8e3d9389f97b6140b9aca4f86496ef6b2776f54fdeee776eb42d.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u3lw.0.exe"C:\Users\Admin\AppData\Local\Temp\u3lw.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\u3lw.1.exe"C:\Users\Admin\AppData\Local\Temp\u3lw.1.exe"2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe"C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD13⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 11642⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4676 -ip 46761⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
mozglue.dll
nss3.dll
ioloDMLog.txt
u3lw.0.exe
u3lw.1.exe
memory/1472-35-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1472-116-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1472-36-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1472-171-0x0000000000400000-0x0000000000793000-memory.dmp
memory/3708-130-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3708-119-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3708-22-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/4568-133-0x0000029661060000-0x0000029661070000-memory.dmp
memory/4568-142-0x000002965F770000-0x000002965F77A000-memory.dmp
memory/4568-169-0x000002967E1F0000-0x000002967E20E000-memory.dmp
memory/4568-159-0x000002967E6B0000-0x000002967E726000-memory.dmp
memory/4568-131-0x000002965BA30000-0x000002965F264000-memory.dmp
memory/4568-132-0x0000029679BB0000-0x0000029679CBA000-memory.dmp
memory/4568-134-0x0000029661080000-0x000002966108C000-memory.dmp
memory/4568-158-0x0000029600300000-0x000002960030C000-memory.dmp
memory/4568-136-0x00000296610E0000-0x0000029661104000-memory.dmp
memory/4568-135-0x0000029661070000-0x0000029661084000-memory.dmp
memory/4568-139-0x00000296799E0000-0x0000029679A92000-memory.dmp
memory/4568-138-0x0000029679800000-0x000002967982A000-memory.dmp
memory/4568-140-0x0000029679E60000-0x0000029679EB0000-memory.dmp
memory/4568-137-0x0000029661110000-0x000002966111A000-memory.dmp
memory/4568-141-0x0000029679860000-0x0000029679882000-memory.dmp
memory/4568-148-0x0000029679A90000-0x0000029679A98000-memory.dmp
memory/4568-146-0x0000029679EB0000-0x000002967A1B0000-memory.dmp
memory/4568-151-0x0000029679CC0000-0x0000029679CC8000-memory.dmp
memory/4568-150-0x0000029679AA0000-0x0000029679AAE000-memory.dmp
memory/4568-154-0x0000029600600000-0x0000029600622000-memory.dmp
memory/4568-153-0x00000296005A0000-0x0000029600602000-memory.dmp
memory/4568-152-0x0000029600580000-0x000002960058A000-memory.dmp
memory/4568-155-0x0000029600B50000-0x0000029601078000-memory.dmp
memory/4568-149-0x000002967E1B0000-0x000002967E1E8000-memory.dmp
memory/4676-27-0x0000000000400000-0x00000000004A5000-memory.dmp
memory/4676-2-0x00000000021D0000-0x000000000223C000-memory.dmp
memory/4676-29-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4676-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4676-28-0x00000000021D0000-0x000000000223C000-memory.dmp
memory/4676-1-0x00000000006B0000-0x00000000007B0000-memory.dmp