Analysis
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max time kernel
138s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 19:45
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe
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Size
67KB
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MD5
f1e5b2025a0aba614bcd0f1fd726d4b6
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SHA1
1cf9920b03a4c0b484b0e20c5804836ea32316a2
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SHA256
07e772d11e86fa19cdbd24a2208435270231d54bf729235450006210b379b0f6
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SHA512
864653a9796d44db39e6c8765890ad8ce0c0f1f757ba0f583643564b6bef1fce6ec020c90880f8ad8681de90fcda96f29b0b978418b99630da7e77223c62ce0f
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SSDEEP
1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyePE:TCjsIOtEvwDpj5HE/OUHnSMYu
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1316-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/1316-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1412-26-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/1316-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000900000002328e-13.dat CryptoLocker_set1 behavioral2/memory/1316-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/1412-26-0x0000000000500000-0x000000000050E000-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 2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1412 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 1316 wrote to memory of 1412 1316 2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe 83 PID 1316 wrote to memory of 1412 1316 2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe 83 PID 1316 wrote to memory of 1412 1316 2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_f1e5b2025a0aba614bcd0f1fd726d4b6_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1316 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1412
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD55a8550930e53e33680a3e8a596c4d390
SHA15b50432b808f467ec084bd22ea310b9525c4d9a2
SHA256cb22b5709af744b2a8e538a5be3fd4677121d2c91a6aa0b76706bdc928cfecae
SHA5123ec8016616c7fc208269f6121ef701667b57bd9b13ad9741aa36085a0a66a0323866dca7ac98b2bb28d7b02c0d611540d50d7c9fd30d19bf916e50a0acd5e74e