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Analysis
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max time kernel
152s -
max time network
162s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
07/03/2024, 00:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe
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Size
46KB
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MD5
b048135e1c0f3c38d8321712bbfa904d
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SHA1
30546109bc4ed05b61ccc35a09dac9c7d3fd689c
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SHA256
938bd70377ca3936a8f846ef3ebcf6b7e199ed19fb7388a9c7ec3afe9b2db073
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SHA512
2e91dd75babeafb6ca9698f617826d37156fc6f31dec28f02915546e85a0160df44b0bb5beab7dc8f960db0625cccf31806b59e771b618aee68058ee4f008a7a
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xb
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c0000000122fa-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000c0000000122fa-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2812 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe 2812 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2292 wrote to memory of 2812 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe 28 PID 2292 wrote to memory of 2812 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe 28 PID 2292 wrote to memory of 2812 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe 28 PID 2292 wrote to memory of 2812 2292 2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-07_b048135e1c0f3c38d8321712bbfa904d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2292 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2812
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD57865de2766cd5fbfd45da24a4b1efa76
SHA157c10536d619539176d3da108fc129732bc6a7f7
SHA256d4380640f8f30a8c2a05abd0657e31d7ae40118c151d102ddf0e0a4ed89c625a
SHA51257ef8be3136a8a33783458109e2d07ee88ae97b438c36ff2e836bb918cce49281274ed696739a0cd9d3d6d3bad08ee0a0fab3bd1fa0d8488d97097039be6c66f