Analysis
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max time kernel
148s -
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
24-05-2024 03:36
Behavioral task
behavioral1
Sample
2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe
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Size
53KB
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MD5
47bcfd6051173519efca4fbfecf5b07f
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SHA1
28071a5b441a86f5907ac2ed949c354eaf146b85
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SHA256
efca6a2877ff4a51ece17e81ca62aecfc40aa5c2b94ab724713fe8e0f9c36628
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SHA512
e889d65c16610061476cb1d2fb7e64d779dc3521502304601c1af71daa39acffcc4b2b6b1b35659a9138d522cfe7052cd7fe293b206b99825f170d7eb6acdd9b
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOeV/:z6QFElP6n+gKmddpMOtEvwDpj31ieN
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000022f51-13.dat CryptoLocker_rule2 behavioral2/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2776-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2776-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0008000000022f51-13.dat CryptoLocker_set1 behavioral2/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2776-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2776-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x0008000000022f51-13.dat UPX behavioral2/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2776-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2776-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2776 asih.exe -
resource yara_rule behavioral2/memory/2280-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x0008000000022f51-13.dat upx behavioral2/memory/2280-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2776-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2776-27-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 2280 wrote to memory of 2776 2280 2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe 83 PID 2280 wrote to memory of 2776 2280 2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe 83 PID 2280 wrote to memory of 2776 2280 2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-24_47bcfd6051173519efca4fbfecf5b07f_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2776
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5e56eecad5887c0dadbacb73c69596d26
SHA1288f6fdc1fa20a67651404a13396a909bc58f6e6
SHA25653b65dff187c1f268b5546cc9f5d42049f2471b2ad2073a7f3408540e0d65588
SHA5125f9134ab723d600278b92a22aba1f301dd90a3c3dc360946680eae207b5a2812ecd4ff7f099d87a80de757e8826711d0f67ad61ef26978ca4e8c11c92a7035d0