Analysis
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max time kernel
149s -
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
26/05/2024, 03:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe
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Size
32KB
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MD5
a3985fd0560a62f1500dc3c0b1d1d339
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SHA1
cb005728a78414eb840198ce3ea378ff502d24c1
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SHA256
7c5dfd8a6850d5ffc00cdefde5485c871468941459b8d45a73808a7bfcfa2401
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SHA512
80f5b836de1e3c9ff9d1505a8f7a35080d85166a29a8579891c6fb15d1bfd7394f6d2b1d54eae3f1cde805cbd6c0a52c28cb34ebf7fab02c36980494b6e517fe
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3v7R:bAvJCYOOvbRPDEgXRcJF
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002341e-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 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 2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 3024 demka.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 4776 wrote to memory of 3024 4776 2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe 83 PID 4776 wrote to memory of 3024 4776 2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe 83 PID 4776 wrote to memory of 3024 4776 2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_a3985fd0560a62f1500dc3c0b1d1d339_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4776 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3024
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD528ba00f78909d081a7682f0a09d08416
SHA17bcbb05cdd23e10a49ad5e0084b98faafea658a5
SHA256bf8faf6570d9d6b8c28a69b24fbf8282ef01ef67dd7bf5508581316dc36e2b1f
SHA512a08cfedff84e737f317a71dee8a782d2c7835b06da22e454cb2277c749d62ea0cee0a0848e25dd232f8048a27217475b232e2a6228199b95659ba62cace31c3e
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Filesize
186B
MD55713be59382522e709b67fcc47577b2e
SHA197f3e8e234ecde5ef9d04a4f03d131d64f0676c8
SHA256b46c87dc12d0d814b0520752f63d145c0766bc2731b1fe3255fd410457003ada
SHA5127e699fdc6ac3d354b7ea7d5ae087676ebe33af5c9d3de042112b0199090f24bdd65714b4fdaef693db78504a03b1c795d2f8be1796533ea927d68544a4fd2a30