Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23/05/2024, 20:09
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe
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Size
37KB
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MD5
266157d309e1ab3131026e0d024b2336
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SHA1
ee9bb3516844b0214024b39574fca803cc7831b7
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SHA256
0c685dc0dd4cf7fccb1f5f96e4a31dc1064f7dccf294c04524c62ba7161772ad
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SHA512
f9563cb46f5a532c8b3f05f5a5b082a092c24654e9dea0402bd4e441fc0fda4120c6451a9717bd7c978008e1a4e9f530e9f50d4f128e50eaf87bb117a0dd3a22
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SSDEEP
768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4X7:fT+hsMQMOtEvwDpjoIHr
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022fbf-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022fbf-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation 2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4484 misid.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 3852 wrote to memory of 4484 3852 2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe 83 PID 3852 wrote to memory of 4484 3852 2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe 83 PID 3852 wrote to memory of 4484 3852 2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_266157d309e1ab3131026e0d024b2336_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3852 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:4484
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5c2a45e207991ff2123c5fdf871d813bc
SHA12ca4e229e6b6ce9e5e7eafc206b2ad3293a3c2d7
SHA25640813800f25943d381bed9bdc76fc2efbe0279ff388f9dba4e631b5597c68138
SHA51294fb2a2da0575103de2a8da798b51f7f058aaad46827dd577094caf87be870afe008cc48882b2110633ce05d224d6d1e2f1174d045cbd359d17bf6044b92b465