Analysis
- max time kernel
142s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
21/05/2024, 14:30
General
- Target cd28e2cfe01499fecd66cdc8ff88502194f77e826d6191c3f838c5f760402a8b.exe
- Size 1.3MB
- Sample240521-rt6w2ahb59
- 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 1092 -s 2003⤵
- Program crash
-
-
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3748 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:81⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1092 -ip 10921⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1092-52-0x0000000001660000-0x0000000003D56000-memory.dmp
memory/1092-54-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1092-57-0x0000000001660000-0x0000000003D56000-memory.dmp
memory/1092-56-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1092-36-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1092-37-0x0000000001660000-0x0000000003D56000-memory.dmp
memory/1092-50-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1092-55-0x0000000000400000-0x0000000001654000-memory.dmp
memory/1092-53-0x0000000000400000-0x0000000001654000-memory.dmp
memory/3192-32-0x0000000004A40000-0x0000000007136000-memory.dmp
memory/3192-33-0x0000000004A40000-0x0000000007136000-memory.dmp
memory/3192-51-0x0000000004A40000-0x0000000007136000-memory.dmp
memory/3192-35-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3192-34-0x0000000076FC1000-0x00000000770E1000-memory.dmp