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Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
22/02/2024, 05:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe
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Size
38KB
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MD5
c91af47ec876293a917223c696c0c0a9
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SHA1
d84749d970ff4921e01610bf6e254154a7ddba1c
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SHA256
d19cdfe515dc6baad319a245e9c559254e37e387d4c596ed44963a324afabbf4
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SHA512
9b9551f0d84a6a9ad6dea7da29fcd869d8ad1b4dd515d2ea66533f045b6ffe2bc1c1ab2a47453a7344de2352ac92d354ae170cd69d34bddc2b1d97a926f6c979
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SSDEEP
384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZnfXsT7:bgX4zYcgTEu6QOaryfjqDDw3sCu5mXq7
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023249-12.dat 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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation 2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2536 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 2204 wrote to memory of 2536 2204 2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe 85 PID 2204 wrote to memory of 2536 2204 2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe 85 PID 2204 wrote to memory of 2536 2204 2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_c91af47ec876293a917223c696c0c0a9_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2204 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2536
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD5a1ed82e0add90ef1bf87d6c1c93e3bc3
SHA14b7d5c535299e4555a1c10684f760ee2b5e48424
SHA256326bac7c2abf95594abc25166d95b818c755124802e8b0a3371da377520cefc7
SHA51234a116e39229809a068de859c9f0459bb21554290cc93a87781ade4c1bff14cc060b8c28d70cb0f57a0f4b5d31b1beec17c342ba7e7c6ccdfbfc8f6e4fbfd295