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Analysis
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max time kernel
144s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
02/02/2024, 22:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe
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Size
36KB
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MD5
04b77b911d33d952b8e33c2c7a999e26
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SHA1
55175735a2a199a84c5a972ff65e53deafa1ee2e
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SHA256
16cfa0daf6de553ff3751dac0a97bfc272169a8ca23a031cf23597a3d045ffbd
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SHA512
2c14696479ba0e1b7de0d8e9b7001f0e1c546dc036eab6d49578aa96acd164c3793e78e7a48f7bbce7a48465026a539939f734078ad22857eb3eadff4ccc9c09
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3OV:bxNrC7kYo1Fxf3s06gYV
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002320d-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4980 pissa.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 4032 wrote to memory of 4980 4032 2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe 86 PID 4032 wrote to memory of 4980 4032 2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe 86 PID 4032 wrote to memory of 4980 4032 2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4032 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Executes dropped EXE
PID:4980
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5bdaf42c5164ae28d79fc7c206bd8c72d
SHA19fa8218c4912ffe4a2956f9cb9d67bab8e729f2e
SHA2567d3be1114560e52128330c9486436aed2f887183bc90390870d121cd9b529984
SHA512c51bf1ea8d2a1b8ef63b64f62921272e5126c220a8f693c3fa18dffabdf2adaf312fe42c81e41db3347d9daceb3d422554e80d771ffae2d85c0c1c37d2b9a790