Analysis
- max time kernel
129s - max time network
133s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
16/05/2024, 10:37
General
- Target 6d2a7b1f9ca74eafaade72a8e376db5eaba3688bcf47c67865ae9b50972cb1a3.exe
- Size 365KB
- Sample240516-mnsd8sha35
- SHA256 6d2a7b1f9ca74eafaade72a8e376db5eaba3688bcf47c67865ae9b50972cb1a3
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\6d2a7b1f9ca74eafaade72a8e376db5eaba3688bcf47c67865ae9b50972cb1a3.exe"C:\Users\Admin\AppData\Local\Temp\6d2a7b1f9ca74eafaade72a8e376db5eaba3688bcf47c67865ae9b50972cb1a3.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u3gc.0.exe"C:\Users\Admin\AppData\Local\Temp\u3gc.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Local\Temp\u3gc.1.exe"C:\Users\Admin\AppData\Local\Temp\u3gc.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 4476 -s 15322⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4476 -ip 44761⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
mozglue.dll
nss3.dll
u3gc.0.exe
u3gc.1.exe
memory/3208-27-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3208-142-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3208-129-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3652-26-0x0000000000400000-0x0000000000793000-memory.dmp
memory/3652-113-0x0000000000400000-0x0000000000793000-memory.dmp
memory/3652-28-0x0000000000400000-0x0000000000793000-memory.dmp
memory/3652-23-0x0000000000400000-0x0000000000793000-memory.dmp
memory/3652-38-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/4288-154-0x0000020E81860000-0x0000020E8186A000-memory.dmp
memory/4288-152-0x0000020EFEFE0000-0x0000020EFF030000-memory.dmp
memory/4288-172-0x0000020EFF030000-0x0000020EFF04E000-memory.dmp
memory/4288-171-0x0000020EFF130000-0x0000020EFF1A6000-memory.dmp
memory/4288-170-0x0000020E9EBD0000-0x0000020E9EBDC000-memory.dmp
memory/4288-167-0x0000020E9F780000-0x0000020E9FCA8000-memory.dmp
memory/4288-143-0x0000020F00000000-0x0000020F03834000-memory.dmp
memory/4288-144-0x0000020E9A380000-0x0000020E9A48A000-memory.dmp
memory/4288-145-0x0000020E818C0000-0x0000020E818D0000-memory.dmp
memory/4288-146-0x0000020E9A1D0000-0x0000020E9A1DC000-memory.dmp
memory/4288-147-0x0000020E9A1C0000-0x0000020E9A1D4000-memory.dmp
memory/4288-148-0x0000020E9A1F0000-0x0000020E9A214000-memory.dmp
memory/4288-149-0x0000020E9A4A0000-0x0000020E9A4AA000-memory.dmp
memory/4288-150-0x0000020E9A670000-0x0000020E9A722000-memory.dmp
memory/4288-151-0x0000020E9A720000-0x0000020E9A74A000-memory.dmp
memory/4288-166-0x0000020E9EBB0000-0x0000020E9EBD2000-memory.dmp
memory/4288-153-0x0000020EFEF50000-0x0000020EFEF72000-memory.dmp
memory/4288-164-0x0000020E9EB80000-0x0000020E9EB8A000-memory.dmp
memory/4288-158-0x0000020E9A750000-0x0000020E9AA50000-memory.dmp
memory/4288-160-0x0000020EFEF20000-0x0000020EFEF28000-memory.dmp
memory/4288-161-0x0000020EFF070000-0x0000020EFF0A8000-memory.dmp
memory/4288-162-0x0000020EFEF30000-0x0000020EFEF3E000-memory.dmp
memory/4288-163-0x0000020EFEF40000-0x0000020EFEF48000-memory.dmp
memory/4288-165-0x0000020E9F1F0000-0x0000020E9F252000-memory.dmp
memory/4476-2-0x0000000002350000-0x00000000023BC000-memory.dmp
memory/4476-32-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4476-1-0x00000000007B0000-0x00000000008B0000-memory.dmp
memory/4476-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4476-31-0x0000000000400000-0x00000000004A5000-memory.dmp
memory/4476-33-0x0000000002350000-0x00000000023BC000-memory.dmp