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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
30/05/2024, 07:40
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe
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Size
97KB
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MD5
ff8423649e5a9a243123efab8e22c303
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SHA1
6c88d101ddd8633c29350a592b62c98e4c5f3449
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SHA256
dbc1484c7f2edb0e09dca1c54f0800e2c6aff0c66d176c95f5677a2bb2531f9d
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SHA512
9c0d330343e05b1bf3d836497cd25542636d0650a1bbca95322118c1a9739dac22507a30d3566837f4fe3c2edc9a10ef9850d0f9a89c352bc686147d43fc48f6
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0M:V6a+pOtEvwDpjtzk
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002351a-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000900000002351a-12.dat CryptoLocker_set1 -
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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4904 asih.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 2028 wrote to memory of 4904 2028 2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe 90 PID 2028 wrote to memory of 4904 2028 2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe 90 PID 2028 wrote to memory of 4904 2028 2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_ff8423649e5a9a243123efab8e22c303_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4904
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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 --field-trial-handle=4000,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:81⤵PID:3988
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
97KB
MD5df87e2c1dcaa17c01fc2e27ca4471ff8
SHA14ff714643722a7442d30a9108f4f05d997819649
SHA2566b0139657e65737c9c4784aa1906271a46228228e501814713a33ea58eddbb26
SHA51227c6c5d9bbd8d28184a2266498bd9ee41e2630380ee36079c11dbe26762ae1cc830eef73e9d677c13cf7b4a851911a65dffb8174f21b108bb3e6398c69558d84