Analysis
- max time kernel
155s - max time network
166s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/06/2024, 21:30
General
- Target 2024-06-10_48418da239722b2db6258faeba6912a0_cryptolocker.exe
- Size 39KB
- Sample240610-1cvbca1hpl
- SHA256 51787962a97be0844fd182c5399d2f813888ad9095ee26eae1781c7b285c49c1
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-10_48418da239722b2db6258faeba6912a0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_48418da239722b2db6258faeba6912a0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
-
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=3912 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2296-22-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/2296-21-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2296-23-0x0000000000510000-0x0000000000516000-memory.dmp
memory/3708-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3708-1-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3708-2-0x0000000002210000-0x0000000002216000-memory.dmp
memory/3708-3-0x0000000002210000-0x0000000002216000-memory.dmp
memory/3708-4-0x0000000002230000-0x0000000002236000-memory.dmp
memory/3708-11-0x0000000000500000-0x000000000050F000-memory.dmp