Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
20/05/2024, 15:37
General
- Target cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe
- Size 1.3MB
- Sample240520-s2vdmsfg43
- SHA256 cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b
Malware Config
Signatures
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"C:\Users\Admin\AppData\Local\Temp\cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4884 -s 17203⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4884 -ip 48841⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/228-37-0x0000000004B10000-0x0000000007206000-memory.dmp
memory/228-33-0x00000000774F1000-0x0000000077611000-memory.dmp
memory/228-34-0x0000000010004000-0x0000000010005000-memory.dmp
memory/228-32-0x0000000004B10000-0x0000000007206000-memory.dmp
memory/228-52-0x0000000004B10000-0x0000000007206000-memory.dmp
memory/4884-35-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4884-36-0x0000000001660000-0x0000000003D56000-memory.dmp
memory/4884-50-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4884-51-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4884-53-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4884-54-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4884-55-0x0000000001660000-0x0000000003D56000-memory.dmp