Analysis
- max time kernel
93s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 02:05
General
- Target 0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441.exe
- Size 936KB
- Sample241107-chxfwsvpdr
- SHA256 0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441
Malware Config
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 6 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- 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 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441.exe"C:\Users\Admin\AppData\Local\Temp\0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441.exe"C:\Users\Admin\AppData\Local\Temp\0c90b170c457fe4656140750bef8331f0f7c195bf3acb378f8ec80a6a42a7441.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 12283⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3748 -ip 37481⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
LangDLL.dll
System.dll
memory/1804-29-0x0000000004A20000-0x0000000005909000-memory.dmp
memory/1804-30-0x0000000076FE1000-0x0000000077101000-memory.dmp
memory/1804-32-0x0000000073E44000-0x0000000073E45000-memory.dmp
memory/1804-31-0x0000000004A20000-0x0000000005909000-memory.dmp
memory/1804-33-0x0000000004A20000-0x0000000005909000-memory.dmp
memory/3748-37-0x0000000077085000-0x0000000077086000-memory.dmp
memory/3748-41-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-36-0x0000000077068000-0x0000000077069000-memory.dmp
memory/3748-34-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-38-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-40-0x0000000000401000-0x0000000000404000-memory.dmp
memory/3748-39-0x0000000001660000-0x0000000002549000-memory.dmp
memory/3748-35-0x0000000001660000-0x0000000002549000-memory.dmp
memory/3748-42-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-43-0x0000000076FE1000-0x0000000077101000-memory.dmp
memory/3748-44-0x0000000000401000-0x0000000000404000-memory.dmp
memory/3748-45-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-46-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-47-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3748-48-0x0000000001660000-0x0000000002549000-memory.dmp