Analysis
- max time kernel
133s - max time network
257s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
31/07/2024, 12:45
General
- Target KSI RFQ-20240732AB.exe
- Size 509KB
- Sample240731-py8v3stemp
- SHA256 e26a2e19e50d80e946bc61c92fe1fcfa53572bfc5494289d36d9126143d92663
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 14 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\KSI RFQ-20240732AB.exe"C:\Users\Admin\AppData\Local\Temp\KSI RFQ-20240732AB.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\KSI RFQ-20240732AB.exe"C:\Users\Admin\AppData\Local\Temp\KSI RFQ-20240732AB.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/2316-10-0x0000000004980000-0x0000000005F8F000-memory.dmp
memory/2316-12-0x00007FF9B6D30000-0x00007FF9B6F0B000-memory.dmp
memory/2316-11-0x00007FF9B6D31000-0x00007FF9B6E3F000-memory.dmp
memory/2316-14-0x0000000004980000-0x0000000005F8F000-memory.dmp
memory/2316-24-0x0000000004980000-0x0000000005F8F000-memory.dmp
memory/4648-13-0x00007FF9B6D30000-0x00007FF9B6F0B000-memory.dmp
memory/4648-23-0x0000000000460000-0x00000000017E3000-memory.dmp
memory/4648-25-0x0000000000460000-0x00000000017E3000-memory.dmp
memory/4648-26-0x0000000000460000-0x00000000017E3000-memory.dmp
memory/4648-27-0x0000000000460000-0x00000000017E3000-memory.dmp
memory/4648-30-0x0000000000460000-0x00000000017E3000-memory.dmp