Analysis
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max time kernel
148s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13/10/2024, 02:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe
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Size
51KB
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MD5
19603ca4cdf30e9ca7a2ddfff1720f17
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SHA1
c4eff134607ee872731e8a9f9e153b995325f133
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SHA256
3177426a01cee10b13f941bb87dd50ead33ec96f3530c2ffd490a4724047a24d
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SHA512
ddef8eddd6b307d2238c25d1de69db1705976981de254c9af9bcc5bbb6a82e4e88d75fec41fca1d833041c395a8a9fc9b1090f9c418ba588619d06900e9e0290
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIXam:aq7tdgI2MyzNORQtOflIwoHNV2XBFV76
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation 2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 4728 hurok.exe -
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 2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1332 wrote to memory of 4728 1332 2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe 84 PID 1332 wrote to memory of 4728 1332 2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe 84 PID 1332 wrote to memory of 4728 1332 2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-13_19603ca4cdf30e9ca7a2ddfff1720f17_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1332 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4728
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
51KB
MD5c44006421020002be25fa9c4bd2e9b29
SHA1c3010b4a3e90cd1b692a42680ec2ea902e1084f1
SHA2568ff8c296811fb58a00c858ceacf43f332860bbc8c74bd0cd8c8fef7a64a1a6d5
SHA512238a6ec750b7c51678daab0c961b4030414e89e0cb821694003ad06b1888705d02dbf6aefc73b78e31d62241efe36b6262c65cf7f5582e842e06aad2978955c7