Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10/11/2024, 06:54
Behavioral task
behavioral1
Sample
2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe
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Size
92KB
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MD5
f18de9de8a1ca6181b6b460123d77dbb
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SHA1
615c63f9da073f0ad1b882e9a7b9193c34321cb3
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SHA256
7f7f1775a3521da1a80589540a2b438e61c2265436fe9d56e615eda4902cfbfb
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SHA512
826488dbf3d6ceb309d810f9b341535ddd19ab00a34099c491497ba10c5c6487cdb2fe84150f95457346ad0180899cc3569d30a749d6dba7ff1ba24b9ca87ca6
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAep:n6a+1SEOtEvwDpjYYvQd2PU
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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation 2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3596 asih.exe -
resource yara_rule behavioral2/memory/3296-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000c000000023ba7-13.dat upx behavioral2/memory/3596-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/3296-19-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/3596-27-0x0000000000500000-0x0000000000510000-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 2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_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 3296 wrote to memory of 3596 3296 2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe 83 PID 3296 wrote to memory of 3596 3296 2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe 83 PID 3296 wrote to memory of 3596 3296 2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-10_f18de9de8a1ca6181b6b460123d77dbb_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3296 -
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:3596
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
92KB
MD589a6b47a1ea601c1ac57db4612b444d7
SHA1e9a514d36b23098c54d9a724e3f628c26486f7f6
SHA2569770498a4c92cc33944035c0bfa78a5270e773d6a8452991d53f72d7c172c637
SHA5127c5e57d38d2fbcb20575433326d1b1e98395336d7ea3e2f9b0235e790e3aeb05c17f97f646b5fe05970cd9adc6d1aed9f48fcd7027e47c72691d81fc4448a53d