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Analysis
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max time kernel
143s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
23/04/2024, 02:42
Behavioral task
behavioral1
Sample
2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe
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Size
102KB
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MD5
d06602bdd08176ca8443d0fc72371b47
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SHA1
0fbedb8c1e5fd31b3317037a4658c6bd5df4c15b
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SHA256
b56f22dae2130ad94df87c76e461f456106aa0faa462e8edf2c4188905001550
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SHA512
d246b7b64842b57d3e17b6d47b1af10281062f5a62dfa87de0ad257002bc37ac45df66c362f3b55758dacbd7a2065317a938d98e9f509ed2b077480f9e7893bc
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBcM:AnBdOOtEvwDpj6zG
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/5080-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000023219-13.dat CryptoLocker_rule2 behavioral2/memory/5080-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1108-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1108-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/5080-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000b000000023219-13.dat CryptoLocker_set1 behavioral2/memory/5080-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/1108-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/1108-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/5080-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral2/files/0x000b000000023219-13.dat UPX behavioral2/memory/5080-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral2/memory/1108-19-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral2/memory/1108-28-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1108 asih.exe -
resource yara_rule behavioral2/memory/5080-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral2/files/0x000b000000023219-13.dat upx behavioral2/memory/5080-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral2/memory/1108-19-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral2/memory/1108-28-0x0000000000500000-0x000000000050F000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5080 wrote to memory of 1108 5080 2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe 90 PID 5080 wrote to memory of 1108 5080 2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe 90 PID 5080 wrote to memory of 1108 5080 2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-23_d06602bdd08176ca8443d0fc72371b47_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5080 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1108
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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=1028 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:81⤵PID:4776
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
102KB
MD502139e009d7949f410712a6fb14bea4f
SHA1b7706e6fbf72a323788f785fcfef254f2e1e1ae1
SHA256765911cdca571ff4918ed2d9a2c12ed7f81ef131e8fc16efe8824a719020faa8
SHA512499aefe974f0b5b3478eeace0c1713058d38d803780c0e0aacf07b8704dd1be2edd29056f255faea71f6521193b5522499a937dc66f75002db8993ffb38cb96a