Analysis
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max time kernel
150s -
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
12-02-2024 17:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe
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Size
67KB
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MD5
dca9c23a3566b96a1a88374cc6156506
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SHA1
e3829d972438019fa76601c639af841aad6e2987
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SHA256
4283dc7d3ccf99bb69e97570133aa7734739f06ecd94c5ac8702b91ed6c7ff03
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SHA512
e53a1b602d963cf7f0403f6ba028c684efc207078384c9487cdd5d0e82bb77211f2d3e6dbeb8d76d94a36e9e786b6bb26f993e4f3473d9e519a6750696e97ec7
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SSDEEP
1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU/:DW60sllyWOtEvwDpjwF85h
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
Processes:
resource yara_rule behavioral2/memory/3880-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 behavioral2/memory/3168-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3880-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
Processes:
resource yara_rule behavioral2/memory/3880-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 behavioral2/memory/3168-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/3880-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation 2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 3168 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
Processes:
2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exedescription pid process target process PID 3880 wrote to memory of 3168 3880 2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe asih.exe PID 3880 wrote to memory of 3168 3880 2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe asih.exe PID 3880 wrote to memory of 3168 3880 2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_dca9c23a3566b96a1a88374cc6156506_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3880 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3168
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
68KB
MD596a15ab47659da79069f522c0c707b5e
SHA1e46b33017349013f15ecedcc9b3548c142b83a61
SHA256ccb97be96d39f80306d7344f4332a980db1c81f0e6cd9d51e0bd8adefab025be
SHA512aa7fc90a10420b3c02e653c3b6947dd33b3149033df6d5254f89052b934107cd325f80c5730de6b53c1f88463ab75e590fcca951e72db4a4a6866afa6750f57e