Analysis
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max time kernel
150s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05/03/2024, 19:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe
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Size
120KB
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MD5
94f39a8244ba7bd972810d56fd4df188
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SHA1
3f92a8f87525501636060d709a14f694208863bf
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SHA256
41c15ecb31738d3611258cd2ac804d9d8f92ab906845f4b409d40771fed6b735
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SHA512
8ceb03552c4337e4ca14d7efc17642ed419e5389a867510a5c2baf0a9783559125210b4c2e1da466671ed77f26782e71e5a8e1c5530b239525c5482f2bb45374
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SSDEEP
1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMgo:u6a++OtEvwDpj6zs
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002331d-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000800000002331d-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation 2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3856 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 860 wrote to memory of 3856 860 2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe 98 PID 860 wrote to memory of 3856 860 2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe 98 PID 860 wrote to memory of 3856 860 2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-05_94f39a8244ba7bd972810d56fd4df188_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:860 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3856
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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=4448 --field-trial-handle=2496,i,15897292497548307209,13920214570023230813,262144 --variations-seed-version /prefetch:81⤵PID:3620
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
121KB
MD5d83a1c9b2d361e0766e5cc81bfc7840c
SHA171869fc686e346cdee99bee983249f30c8a9250b
SHA2562cbddb8fed82f47900812e01aeb3d5d2ee19965494056547a74faec4e09483f3
SHA5125b389c691602ccca57d5b09f75ca354236122341c8a296de78ac2f943fbc69d7e8ea6bd3dc906f7926079aabbd8ff623a55af686bdd012fb60b3bb7b3558ae59