Analysis
- max time kernel
144s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/05/2024, 07:49
General
- Target 견적의뢰 자료.exe
- Size 767KB
- Sample240510-jntqhsbc61
- SHA256 4fd0d10716394ddfa00ad59a6e8c3d585236a2aa532e1a45239e5711866d2a76
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
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Program Files directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\견적의뢰 자료.exe"C:\Users\Admin\AppData\Local\Temp\견적의뢰 자료.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\견적의뢰 자료.exe"C:\Users\Admin\AppData\Local\Temp\견적의뢰 자료.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
-
-
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=2268 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/1016-38-0x0000000001720000-0x0000000002F79000-memory.dmp
memory/1016-39-0x0000000077438000-0x0000000077439000-memory.dmp
memory/1016-40-0x0000000077455000-0x0000000077456000-memory.dmp
memory/1016-50-0x00000000004C0000-0x0000000001714000-memory.dmp
memory/1016-51-0x0000000001720000-0x0000000002F79000-memory.dmp
memory/1016-56-0x00000000773B1000-0x00000000774D1000-memory.dmp
memory/2148-34-0x0000000004A60000-0x00000000062B9000-memory.dmp
memory/2148-36-0x00000000773B1000-0x00000000774D1000-memory.dmp
memory/2148-35-0x0000000004A60000-0x00000000062B9000-memory.dmp
memory/2148-37-0x0000000074005000-0x0000000074006000-memory.dmp
memory/2148-60-0x0000000004A60000-0x00000000062B9000-memory.dmp