Analysis
- max time kernel
130s - max time network
133s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
- submitted
03/04/2024, 10:00
General
- Target fd8a03affa0471fc2998e8e232ed9289aeed232cbadcdd4d793b4be7d849b100.exe
- Size 430KB
- Sample240403-l1rsssbh2t
- SHA256 fd8a03affa0471fc2998e8e232ed9289aeed232cbadcdd4d793b4be7d849b100
Malware Config
Extracted
-
stealc
-
http://185.172.128.209
-
url_path
/3cd2b41cbde8fc9c.php
Signatures
- Detect ZGRat V1 3 IoCs
- Stealc
Stealc is an infostealer written in C++.
- ZGRat
ZGRat is remote access trojan written in C#.
- Downloads MZ/PE file
- Executes dropped EXE 3 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 2 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.
- Runs ping.exe 1 TTPs 1 IoCs
- 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 20 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\fd8a03affa0471fc2998e8e232ed9289aeed232cbadcdd4d793b4be7d849b100.exe"C:\Users\Admin\AppData\Local\Temp\fd8a03affa0471fc2998e8e232ed9289aeed232cbadcdd4d793b4be7d849b100.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\u35k.0.exe"C:\Users\Admin\AppData\Local\Temp\u35k.0.exe"2⤵
- Executes dropped EXE
- 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\JEHIJJKEGH.exe"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\JEHIJJKEGH.exe"C:\Users\Admin\AppData\Local\Temp\JEHIJJKEGH.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\JEHIJJKEGH.exe5⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\PING.EXEping 2.2.2.2 -n 1 -w 30006⤵
- Runs ping.exe
-
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 692 -s 25523⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\u35k.1.exe"C:\Users\Admin\AppData\Local\Temp\u35k.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 4088 -s 11722⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4088 -ip 40881⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 692 -ip 6921⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Are.docx
mozglue.dll
nss3.dll
JEHIJJKEGH.exe
u35k.0.exe
u35k.1.exe
memory/692-13-0x0000000000A90000-0x0000000000B90000-memory.dmp
memory/692-188-0x0000000000400000-0x0000000000866000-memory.dmp
memory/692-16-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/692-15-0x0000000000400000-0x0000000000866000-memory.dmp
memory/692-14-0x00000000024B0000-0x00000000024D7000-memory.dmp
memory/692-138-0x0000000000A90000-0x0000000000B90000-memory.dmp
memory/692-123-0x0000000000400000-0x0000000000866000-memory.dmp
memory/2492-153-0x0000027E7C280000-0x0000027E7C2AA000-memory.dmp
memory/2492-171-0x0000027E7FF50000-0x0000027E7FF88000-memory.dmp
memory/2492-200-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-199-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-139-0x00007FFD649A0000-0x00007FFD65462000-memory.dmp
memory/2492-140-0x0000027E75EC0000-0x0000027E797B8000-memory.dmp
memory/2492-141-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-142-0x0000027E7BF40000-0x0000027E7C050000-memory.dmp
memory/2492-144-0x0000027E7BEB0000-0x0000027E7BEBC000-memory.dmp
memory/2492-143-0x0000027E7B530000-0x0000027E7B540000-memory.dmp
memory/2492-145-0x0000027E7BEA0000-0x0000027E7BEB4000-memory.dmp
memory/2492-146-0x0000027E7BF10000-0x0000027E7BF34000-memory.dmp
memory/2492-151-0x0000027E7C1B0000-0x0000027E7C1BA000-memory.dmp
memory/2492-152-0x0000027E7C1D0000-0x0000027E7C282000-memory.dmp
memory/2492-154-0x0000027E7C2B0000-0x0000027E7C32A000-memory.dmp
memory/2492-198-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-155-0x0000027E7C330000-0x0000027E7C392000-memory.dmp
memory/2492-156-0x0000027E7C410000-0x0000027E7C486000-memory.dmp
memory/2492-157-0x0000027E7BE80000-0x0000027E7BE8A000-memory.dmp
memory/2492-162-0x0000027E7C490000-0x0000027E7C790000-memory.dmp
memory/2492-197-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-168-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-169-0x0000027E7FF00000-0x0000027E7FF08000-memory.dmp
memory/2492-196-0x00007FFD649A0000-0x00007FFD65462000-memory.dmp
memory/2492-170-0x0000027E7B4F0000-0x0000027E7B500000-memory.dmp
memory/2492-172-0x0000027E7FF10000-0x0000027E7FF1E000-memory.dmp
memory/2492-173-0x0000027E18F70000-0x0000027E18F7A000-memory.dmp
memory/2492-174-0x0000027E18F80000-0x0000027E18FA2000-memory.dmp
memory/2492-175-0x0000027E19510000-0x0000027E19A38000-memory.dmp
memory/2492-178-0x0000027E7C8E0000-0x0000027E7C930000-memory.dmp
memory/2492-179-0x0000027E18FB0000-0x0000027E18FBC000-memory.dmp
memory/2492-194-0x0000027E7C8B0000-0x0000027E7C8CE000-memory.dmp
memory/2492-192-0x0000027E7C930000-0x0000027E7C952000-memory.dmp
memory/3308-65-0x00000000029A0000-0x00000000029A1000-memory.dmp
memory/3308-124-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3308-137-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/4088-71-0x0000000002710000-0x000000000277C000-memory.dmp
memory/4088-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp
memory/4088-2-0x0000000002710000-0x000000000277C000-memory.dmp
memory/4088-3-0x0000000000400000-0x0000000000889000-memory.dmp
memory/4088-70-0x0000000000400000-0x0000000000889000-memory.dmp
memory/4928-186-0x00000000005E0000-0x0000000000600000-memory.dmp
memory/4928-187-0x00000000725D0000-0x0000000072D81000-memory.dmp
memory/4928-189-0x0000000005050000-0x0000000005060000-memory.dmp
memory/4928-193-0x00000000725D0000-0x0000000072D81000-memory.dmp