Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 17:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe
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Size
61KB
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MD5
7d6a283680d30a921b73f2f622932a0e
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SHA1
38a4e76f41aa0390fc427a33be6c2243b25ccbbe
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SHA256
9b3f1473670f758a26fded1e5989a4fba2821f1db1f9af694668f02a22b2575d
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SHA512
572f06cf973d3fa97ffe606233d71e49b3e28b2bd1bd9917faf5f53c22671c9b2cfcd90deea8c58d2916d12d778ad24d35d004ffceb234dcc8550dcaab2d86a2
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SSDEEP
1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xEW:X6a+SOtEvwDpjBrOv
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2972 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
Processes:
2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exedescription pid process target process PID 1524 wrote to memory of 2972 1524 2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe asih.exe PID 1524 wrote to memory of 2972 1524 2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe asih.exe PID 1524 wrote to memory of 2972 1524 2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_7d6a283680d30a921b73f2f622932a0e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1524 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2972
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD58868bcfa54bed8bf7a70cae72ffc51f0
SHA1ee239eb5338fb45b933a441847d6a80d117125a4
SHA256694ace19369c8879af19d2fd44e33c4aa885201e913d797f63641bcb824d3ec6
SHA5129be3f9a0a5e7ccd21f4d6ccbe7bbde1287ce80aa77d295e01b03a6d59a88cb595dda1c952c392d9e69e22a34081b62c076d9846fd42579548365409d2115abcd