Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31-10-2024 08:23
Behavioral task
behavioral1
Sample
2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe
Resource
win7-20240708-en
General
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Target
2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe
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Size
69KB
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MD5
2cc3a29e16ec4ba79428cf465f9d201b
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SHA1
7f3a088c1f4d1299ca9a1b52b6f5a103c2175d71
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SHA256
98227b01e4f4fe86cc2ad3266d48c7e2956ff25849f02dc8d8b609bf0187bb05
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SHA512
95ca23b89670f576e68a5d5da3b4491afbc9b78583635c1d9d07e25f8448eaeaed933a8491550e20394213be63c41e824033286eb378c498601802db10cb7f02
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRn:1nK6a+qdOOtEvwDpjm
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.
Processes:
2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation 2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid Process 1144 asih.exe -
Processes:
resource yara_rule behavioral2/memory/2596-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/files/0x0008000000023c92-13.dat upx behavioral2/memory/2596-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/memory/1144-26-0x0000000000500000-0x000000000050F311-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.
Processes:
2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exeasih.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exedescription pid Process procid_target PID 2596 wrote to memory of 1144 2596 2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe 84 PID 2596 wrote to memory of 1144 2596 2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe 84 PID 2596 wrote to memory of 1144 2596 2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_2cc3a29e16ec4ba79428cf465f9d201b_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596 -
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:1144
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD55804ccdfede39263ed7b2210398db942
SHA162739a78e5011cb409a15de8a287210f061f2595
SHA256968b038631f1c2be3e2e3c3eaaee913009ead89c17ee62a585f51a82b11ad92a
SHA512aab112fb6e4d538782ac6c4bc13207db04722a9b19769415ebb2ae4a60f55a1219c9f0234d7c65ae6e3bf747dc6a6e1fdadd249d160c8ee01fe1ca03e009e597