Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31/05/2024, 15:45
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe
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Size
45KB
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MD5
672195f5397ff7237fd9837d48404695
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SHA1
dab1c18ae39aa8330846c19250394122d1e46c94
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SHA256
0052586317d6b2cbdc0ba65c9bbe5c95202847f204f83b1f18e1105aaa28f263
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SHA512
1e1914c4580468e232f85d861e70fc4cf2f49317febf84f586d173c0d5eb1e78263227f32e1780427c2f0fd2ec7b633ec8ae404203019dfd7fa94fb9222f062f
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SSDEEP
384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDOR4V:bm74zYcgT/Ekn0ryfjvZ
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4292-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000023437-13.dat CryptoLocker_rule2 behavioral2/memory/4292-17-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3108-26-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 -
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 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3108 hasfj.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 4292 wrote to memory of 3108 4292 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe 83 PID 4292 wrote to memory of 3108 4292 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe 83 PID 4292 wrote to memory of 3108 4292 2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_672195f5397ff7237fd9837d48404695_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4292 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:3108
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD5a80fd7bcf44fd4baadeb854b0d3e94fc
SHA19ee10e60fedc1c111ca74d154b71ad500c640e33
SHA256bfb9c4c9e329c4939f1887e22fb21d5b41105dcab93c3b089fcd33780dd30867
SHA51274f33c1a33b734f56e0551f74990a02f0f4ff64e5a739ed055123cbef90e6e83e3d47d5d9faf694bed1c3e84f22c7c5e172a61878ef8a63ecdffb0f4c6bab99f