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Analysis
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max time kernel
148s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
09/05/2024, 04:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe
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Size
46KB
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MD5
51aa7ea715070ca9f1c4409529a89a13
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SHA1
dc9455783d34acf14b85efb152ec1441dfd389b8
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SHA256
a4e45a2b07ff21377a3f5b857cd475da1f63fc65a9bb30e90527bf407baab24e
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SHA512
5c6f8a267928d3e1d5214c9b6cfba32e1149d9c4665b987ef85b97e77869be09e3b024bfbdd613def09c4de8989f3c4cb4dbdccef60627dbbefb26093e0a0727
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SSDEEP
768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPaW:P6QFElP6k+MRQMOtEvwDpjBQpVXBW
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3528-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/2328-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3528-19-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2328-27-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3528-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000700000002328e-13.dat CryptoLocker_set1 behavioral2/memory/2328-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/3528-19-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/2328-27-0x0000000000500000-0x000000000050B000-memory.dmp 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2328 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 3528 wrote to memory of 2328 3528 2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe 81 PID 3528 wrote to memory of 2328 3528 2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe 81 PID 3528 wrote to memory of 2328 3528 2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_51aa7ea715070ca9f1c4409529a89a13_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3528 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2328
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5ced7e193ed56d15c3d0b2ac5231ccd41
SHA14c9b6c09799d2f77230cacccb87d3128bd87e9e0
SHA2560e7ef4ca6cfc644a9c0af36c9679e4eed9bb554e7f0ab63fa874423f67bcc58d
SHA512994b0eec452a46493ff64bddb38b1eb92dea787b34c3ab6141d1e969d8391d6042a0201005e5dca985b78a44fe9f3a402ab190faf960dd13f5e54c8507e23db4