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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21/05/2024, 08:52
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe
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Size
33KB
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MD5
f62acd278577188ad8a7456547cf3140
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SHA1
1c6f3a434e6641e3f710c84dc3d171f04eda1c16
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SHA256
c49436881502e471e88652290ba7e1f9f3ce9653280ba419d783f618a52e8b7b
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SHA512
027f0e0f2aa599e9577d3968b1c81e6bc97b2574c75bac3990b9a7a519a56abf0cffb4d793aa2d0f40fdf093f0c6c90d91e53be4d53cee96f7f12cebeb391db3
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvx0:bG74zYcgT/Ekd0ryfjkO
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/560-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00090000000233e2-13.dat CryptoLocker_rule2 behavioral2/memory/4476-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/560-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4476-27-0x0000000008000000-0x000000000800A000-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 2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4476 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 560 wrote to memory of 4476 560 2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe 82 PID 560 wrote to memory of 4476 560 2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe 82 PID 560 wrote to memory of 4476 560 2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-21_f62acd278577188ad8a7456547cf3140_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:560 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:4476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD5c09cb31f3faf1928d6f6937dc7385de3
SHA12fb4edbf2bc08671dbbc133f510f9f4d712cb47b
SHA256b3dfbe2f27d3a5dcda2ea2ce13d357d2ca89644251f0ef3128be69a4c98b732e
SHA512baab3146cf85495e835f817f1239b5466f158574f95ca2c01f26c661ca5ba5033bbe074785647c12bb4d41120330f2a75330fba1fd1665e6df0c56bb9bad202e