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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
24/04/2024, 00:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe
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Size
84KB
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MD5
447ca6806ef2db20485c607d17db63d7
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SHA1
d2a7ccdef2fa28860ebe133f8e294cfd14d8b6c7
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SHA256
14c6f8520edee094586244f530782ca92c4a568fa61c4604ba5b1632da77455e
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SHA512
06b82df2185779825e95361b339319c76f97b78077acf14dc7996c935e9c8f317ffc18f6fe658c98ed705f7acffacf0d9e2cea8ba39a5eb04a36412cf1162e6b
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnjh:V6QFElP6n+gMQMOtEvwDpjyaLccVNlL
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000300000001e97c-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation 2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3980 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 3668 wrote to memory of 3980 3668 2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe 88 PID 3668 wrote to memory of 3980 3668 2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe 88 PID 3668 wrote to memory of 3980 3668 2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-24_447ca6806ef2db20485c607d17db63d7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3668 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3980
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
84KB
MD58c378fd248a2494a8ee5b526d1027123
SHA1b22c8d160ee25c440b577cfe1573316a2b04f83e
SHA256b540c218b27def1544ad86f72b6ab7479e3f3a8dc49875b56336bcfb138d1bfa
SHA512928df25e5edd3f2c178482d8cf3f757d30cbc248ad890c25a17dcef6e67933d06f23dd73251b4d0649a706de0a55e9c2dcb469748a57739534bd0b1ac5e04730