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
24/02/2024, 17:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe
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Size
48KB
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MD5
66bc9356cb4cdc819502a21f1ad3d990
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SHA1
3914ea7e2b8bd4338bf7e24989939fe690a8a8a1
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SHA256
c54e6901aa1e0cbcebc39b234fc44ae1891d5063fb1e4d9a092e18d4bf39f846
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SHA512
15c1a9ab661ed6efde1b05e24b420ce360eaf3614df7ff1747473fbf05f228035500d79a3dfb327fe5978e1fd47010c82606dab0bbf2236420cf1c7ebe8b5d04
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SSDEEP
768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hS7J:bgGYcA/53GAA6y37nbS7J
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation 2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2116 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 3748 wrote to memory of 2116 3748 2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe 88 PID 3748 wrote to memory of 2116 3748 2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe 88 PID 3748 wrote to memory of 2116 3748 2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_66bc9356cb4cdc819502a21f1ad3d990_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3748 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2116
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD5afdd2a3743e35dbc389bb9eb5c736084
SHA15c82ada92c168eded54da3204ab4b133bbe76951
SHA2568dbee5a5c0acdafd90d7909c27670317d642c66bf91da735c9a5abfb35ecc786
SHA512dd947bd69f7773c586577a260a5ccacb305c3b15b9fa5278159fb9d42f5da2352a9be9e3ceeda3c64ae36b138eb4b6de383f0fea81ebd97bd7e16d3abf39483e