Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
12-02-2024 18:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe
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Size
38KB
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MD5
e3a32a3cfa4a50415a60692e4e8cca0b
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SHA1
1ec4d7ae2607533f0476e95c23279d6c97d0ade0
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SHA256
fa3d56cbe99e48cf4041a7e70630f60b323cdb15342e342065310d27b245eb3d
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SHA512
bb399165bb203b4e16dbff64a2812b9ba9655725f47710ac4e0a9860f49b28fa634d55d84be0b9b53580d029643d18a09434efb10a2abb4cf47335443fe9bc0a
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfw:X6QFElP6n+gJQMOtEvwDpjBsYK6w
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2884 asih.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exepid process 2368 2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exedescription pid process target process PID 2368 wrote to memory of 2884 2368 2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe asih.exe PID 2368 wrote to memory of 2884 2368 2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe asih.exe PID 2368 wrote to memory of 2884 2368 2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe asih.exe PID 2368 wrote to memory of 2884 2368 2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2368 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2884
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD584431f5c640708826c9d31e0d1e34124
SHA1473a685fd8c9f4b99b5ad9a93018475ba3ce736b
SHA256d8dbc236229e86e19bba8c41aa7d36306809396c10aaedd5786facd9934f1ef4
SHA512bd378bbe263d3f8ec2f445de3caec2fbfb3eb856c29ce969513d4fa40d0ef1f0ae7d84129f92cc2461c58fe89b4c65cd3f0a4128c90e6f0d62c2ff163a4f21c4