Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
11/06/2024, 02:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe
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Size
65KB
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MD5
76a21aa24a697aab57e05a71ac670bc7
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SHA1
d1aae97b893814dd866f0a651ff79263db5ae0be
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SHA256
4f57ceb7aaedb596526c77e313c1156ba26e53135259d741d19df8c84822d656
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SHA512
2f1c9cac8137bfe8fb5cfea9d29d3be9a6573934bd38c839870578d67e1d95829b3de17536945e30b69916b93b85ef5b0db74410774ae5aa449c43bbfa67cd73
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SSDEEP
1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzY54:TCjsIOtEvwDpj5HE/OUHnSMZ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3612-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/1484-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3612-25-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1484-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3612-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_set1 behavioral2/memory/1484-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/3612-25-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/1484-27-0x0000000000500000-0x000000000050E000-memory.dmp 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1484 misid.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 3612 wrote to memory of 1484 3612 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe 82 PID 3612 wrote to memory of 1484 3612 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe 82 PID 3612 wrote to memory of 1484 3612 2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_76a21aa24a697aab57e05a71ac670bc7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3612 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1484
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
66KB
MD5b47915199431792d4ca5ee5290d37a01
SHA1ffd297a34c57f4ef3a5aba343c10b9a366102af7
SHA2560f9a7383b8d217f49bc4d60cfde7cdccd17a995bfb8af1d6f6b38138f3306c49
SHA5125e03155b0a4e1a1062448b8fa24cc8d129204eb8ff7a4e180dce71e8813ab787b96c9c011caf9dde79b60835bafb93e6c1419ed3b327e2a4e15b134a2d243cfe