Analysis
- max time kernel
146s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
16/05/2024, 10:34
General
- Target d9478fb50d759a8b4cfcae18078427d81e730064488dcd11ab753e8d8150c4d3.exe
- Size 365KB
- Sample240516-ml969sgh66
- SHA256 d9478fb50d759a8b4cfcae18078427d81e730064488dcd11ab753e8d8150c4d3
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
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C:\Users\Admin\AppData\Local\Temp\d9478fb50d759a8b4cfcae18078427d81e730064488dcd11ab753e8d8150c4d3.exe"C:\Users\Admin\AppData\Local\Temp\d9478fb50d759a8b4cfcae18078427d81e730064488dcd11ab753e8d8150c4d3.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u33w.0.exe"C:\Users\Admin\AppData\Local\Temp\u33w.0.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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-
C:\Users\Admin\AppData\Local\Temp\u33w.1.exe"C:\Users\Admin\AppData\Local\Temp\u33w.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
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 15242⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4028 -ip 40281⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Are.docx
mozglue.dll
nss3.dll
u33w.0.exe
u33w.1.exe
memory/1864-175-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1864-13-0x0000000000400000-0x0000000000793000-memory.dmp
memory/1864-14-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1864-120-0x0000000000400000-0x0000000000793000-memory.dmp
memory/2000-121-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/2000-133-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/4028-77-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4028-76-0x0000000000400000-0x00000000004A5000-memory.dmp
memory/4028-3-0x0000000000400000-0x000000000046F000-memory.dmp
memory/4028-1-0x00000000006B0000-0x00000000007B0000-memory.dmp
memory/4028-2-0x00000000021D0000-0x000000000223C000-memory.dmp
memory/4576-140-0x000001C8F7D20000-0x000001C8F7D2A000-memory.dmp
memory/4576-151-0x000001C8FC940000-0x000001C8FC948000-memory.dmp
memory/4576-138-0x000001C8F7B30000-0x000001C8F7B44000-memory.dmp
memory/4576-139-0x000001C8F7BA0000-0x000001C8F7BC4000-memory.dmp
memory/4576-137-0x000001C8F7B40000-0x000001C8F7B4C000-memory.dmp
memory/4576-141-0x000001C8F7D40000-0x000001C8F7D6A000-memory.dmp
memory/4576-142-0x000001C8F7D80000-0x000001C8F7E32000-memory.dmp
memory/4576-143-0x000001C8F7E80000-0x000001C8F7ED0000-memory.dmp
memory/4576-144-0x000001C8F7ED0000-0x000001C8F7EF2000-memory.dmp
memory/4576-145-0x000001C8F78F0000-0x000001C8F78FA000-memory.dmp
memory/4576-149-0x000001C8F7F00000-0x000001C8F8200000-memory.dmp
memory/4576-136-0x000001C8F78A0000-0x000001C8F78B0000-memory.dmp
memory/4576-152-0x000001C8FC280000-0x000001C8FC2B8000-memory.dmp
memory/4576-153-0x000001C8FC250000-0x000001C8FC25E000-memory.dmp
memory/4576-154-0x000001C8FC270000-0x000001C8FC278000-memory.dmp
memory/4576-155-0x000001C8FCBF0000-0x000001C8FCBFA000-memory.dmp
memory/4576-156-0x000001C8FCC10000-0x000001C8FCC72000-memory.dmp
memory/4576-157-0x000001C8FC970000-0x000001C8FC992000-memory.dmp
memory/4576-158-0x000001C8FD1A0000-0x000001C8FD6C8000-memory.dmp
memory/4576-161-0x000001C8FC990000-0x000001C8FC99C000-memory.dmp
memory/4576-163-0x000001C8FCA70000-0x000001C8FCAE6000-memory.dmp
memory/4576-135-0x000001C8F7A20000-0x000001C8F7B2A000-memory.dmp
memory/4576-173-0x000001C8F8520000-0x000001C8F853E000-memory.dmp
memory/4576-134-0x000001C8F1AF0000-0x000001C8F5324000-memory.dmp