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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17/10/2024, 19:32
Behavioral task
behavioral1
Sample
2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe
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Size
56KB
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MD5
8bb1aa2118026671dde5de2c2508e584
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SHA1
e86ce853b42c6210682461bce5bcd1503567b0ef
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SHA256
7e3d5dadb1b3f6c9083aba4c2f2a0b015c75caeaa159d33e6e7825ce475cc5c6
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SHA512
8df64da3b2664aae9fb856814c1fd62359f1f30bd35ad84d6165a81cb97e2a4a138bcab835cd097eb256ca765eb37fc04ef7fe2867b51f03fb51180cabff4a82
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax848+h7:z6QFElP6n+gKmddpMOtEvwDpj9aYaV
Malware Config
Signatures
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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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation 2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4204 asih.exe -
resource yara_rule behavioral2/memory/3200-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000a000000023bb0-13.dat upx behavioral2/memory/3200-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/4204-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3200 wrote to memory of 4204 3200 2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe 86 PID 3200 wrote to memory of 4204 3200 2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe 86 PID 3200 wrote to memory of 4204 3200 2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-17_8bb1aa2118026671dde5de2c2508e584_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3200 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4204
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5e702b77da844b10f8ef840f9ad3beddc
SHA19431792600f583266c61cb64df500cac1b402fb2
SHA256eb369a85686bb08482a9f40d6f9c19f923a87da07da5292838d355d8a2ee32b3
SHA5122a0d75dd7452d50c966755682a1bc022246b40f3be0a98d942c4e83b1c89b9fe93081117461ed1a1322bf9f447fbbded2efdfde1244b6a71e90232b1688c7025