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Analysis
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max time kernel
135s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
05/06/2024, 03:23
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe
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Size
34KB
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MD5
0494da7a581072c5d49301c513b2f5ad
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SHA1
74f22ff25ed8570159c9736a51d061afd2e4aa9a
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SHA256
692d8b1d8decc77015a64c60f4166476058da12e7d9aa58dd39b33b565188b17
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SHA512
0cf6f34cdd2f9bcec713be9a7e2caa5a1df4e43b00a06cdbf81757cb5fac522cfa8e15eafad5abbd679718499abf54ce9728d7899d26ebdaa0bfd5082a63e277
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jd+aV:bxNrC7kYo1Fxf2rYPsu
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0005000000023276-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation pissa.exe -
Executes dropped EXE 1 IoCs
pid Process 3608 pissa.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 2804 wrote to memory of 3608 2804 2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe 83 PID 2804 wrote to memory of 3608 2804 2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe 83 PID 2804 wrote to memory of 3608 2804 2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-05_0494da7a581072c5d49301c513b2f5ad_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2804 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3608
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34KB
MD532bb91f1c989e0faa986f3f7853d7c95
SHA1d7b9d7c23fdb7b9d9f142773b46e2e70a0af1e7f
SHA256550ec5209051dd17ecb25d7a835cbf4661e4496b7c4563d081016148c447c574
SHA51287b2acb4b29a7fefce4ae642953d84d68f5c2323d787d545020fa003d33301b0f6521aeaaf372a81823bf483584c37cb30ba56f159b8a6aad4adc2945e9f90d3
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Filesize
261B
MD511bed1c06d8f4680de5154405be20365
SHA19c3095f1aa0b02924c23592d1e86673bb0081ca1
SHA256bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666
SHA512050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8