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Analysis
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max time kernel
143s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19/02/2024, 22:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe
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Size
62KB
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MD5
6a06e2ddf7e29c83de508024d9c96000
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SHA1
4145c4aded7439315147cbe8516fa2eaceb2a70c
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SHA256
3482659ffc8221876eb7c3ca4f5d88b23910e7e8489659d3cf753d7f065e5fe3
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SHA512
d1dfd665707e76a33f413ef7b268f6fcefd54d7f42d782a402fb7ea5a15374cc43d67cab8501c52127196e5e3bf5884289b6bff97567ee77ca8107c5ebed18c6
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SSDEEP
1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xEdt:X6a+SOtEvwDpjBrOO
Malware Config
Signatures
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Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000700000002310d-12.dat CryptoLocker_rule2 behavioral2/files/0x000700000002310d-15.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral2/files/0x000700000002310d-12.dat CryptoLocker_set1 behavioral2/files/0x000700000002310d-15.dat CryptoLocker_set1 -
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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4728 asih.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 1528 wrote to memory of 4728 1528 2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe 83 PID 1528 wrote to memory of 4728 1528 2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe 83 PID 1528 wrote to memory of 4728 1528 2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_6a06e2ddf7e29c83de508024d9c96000_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4728
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD58b99c081fc04241f4b475dd7d7b15d5c
SHA17d04231e041dd3ef8ad60922b1d1fb63003b766c
SHA25644afac0c4c0e36e896ae180f5c40a0973e7436004f39e0b2b08599bdba086ffb
SHA512999a3db30e2f985713602b354c38affb6ff0db123a388ed9d3f603b15ed41a395195592a49e6fa7ab968b6a6371de6ccc9768d8bbc342be7cd73b518c82a64a9
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Filesize
15KB
MD506cfc0b5f5f327270e1e26d8e87c0536
SHA15f441c40e6d8dd9c1e7ebe68a61dc5efe3e2b06f
SHA256e1955afe0338cdead984123e26daaabf9db2db697f6bdcfe08bd07cb9a0902f8
SHA5120072b62afd1c0b07d08cbf806d811d0a646b3694d3f4ed5fa653362a4c6c560f378c0bc69b47fc07f528aec07173ddabbb2039429ee6831622a3306d4b0eef4b