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Analysis
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max time kernel
152s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
20/05/2024, 20:32
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe
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Size
41KB
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MD5
d0e1f98d523b55f46232cce5abd6d9f3
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SHA1
ef9297868eacf93ffe85969acc4cf85996f4c9bf
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SHA256
9c5ffc0f34db4bdb66898c2ea7e7c002d80e21910fb47ca95de7a683b3a36cb0
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SHA512
d2875eeee75a8a2c69790144c1ae62f83216079c49ae480da8c8007b0cbb6fdceb62ac121482a4dbb6d622305ace4fc7b6f4761913ccbfd1d24cc6c5dc201e6f
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SSDEEP
768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9xgym:bIDOw9a0Dwo3P1ojvUSD79yym
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000023266-12.dat CryptoLocker_rule2 -
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 2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2244 lossy.exe -
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 2260 wrote to memory of 2244 2260 2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe 93 PID 2260 wrote to memory of 2244 2260 2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe 93 PID 2260 wrote to memory of 2244 2260 2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-20_d0e1f98d523b55f46232cce5abd6d9f3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2260 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2244
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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=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:81⤵PID:2532
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5a2e65aeba5b9965510e1b2062b242d55
SHA1308867f7baae88a6533ff6e43eee36894f4c5fda
SHA256c95ebf96ce742dbb910e2cb278a406bdcf74894481e4fae423201da9bbf6f143
SHA512161e3d3be00ff471e3415f216b6eb138bab51723ec6ae2c306d0d379a0a5c823c8792997da022bd5559d9aebb0784c9cfd3bc286dee65b44f061bca2524d4cef