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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
04/05/2024, 19:09
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe
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Size
31KB
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MD5
82a126a911af851bbccf5494583f51ce
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SHA1
5560fae6b646460539dd40d48984ab498127846f
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SHA256
f6bc5f104e5da876e7bf5e6481da3176c7408b0c5f4d328114ae718b19dc58ae
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SHA512
42d7bd3cee1a39e1570f7ab2032792b0b44601e93ffa9f4dae15930b1327e407ee43d7a36464adc63a145c5345f655f03fde7ea32b1c481046eccb4ea7094360
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvv:bG74zYcgT/Ekd0ryfjkv
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1728-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2556-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1728-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014454-14.dat CryptoLocker_rule2 behavioral1/memory/2556-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2556 hasfj.exe -
Loads dropped DLL 1 IoCs
pid Process 1728 2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1728 wrote to memory of 2556 1728 2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe 28 PID 1728 wrote to memory of 2556 1728 2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe 28 PID 1728 wrote to memory of 2556 1728 2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe 28 PID 1728 wrote to memory of 2556 1728 2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-04_82a126a911af851bbccf5494583f51ce_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2556
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD554cbde494b9d473d2f3ee86395066913
SHA1627964ae76defb988e607a46b7b3b3db3ac49dba
SHA256c2d7b7e2ba6d444b2cf03bf051b427ec765ce2a0ed0961ac37c1f9774da98d22
SHA51260db1a450012472416903cc495a99a6fd557a8ef793340d0ee91f0b8aac70b93e9e1b84b56f46d0d462d30066ee1679aa042706e5a28c3056a3083523488fa96