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Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23/05/2024, 21:26
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe
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Size
33KB
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MD5
1ead185e1c0b1e9a65cbeb09d095851e
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SHA1
bc3173c2af14c7269b40999b904536dd9ef36612
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SHA256
192e966ed9a7ee75a0c907bdb226d78436516d9768eed631ee2f15a51372255e
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SHA512
3a4c675eecd938fd73c2e0defc0de60a87cd41cee7e0ef71bfc56f56a22e236d002b6f6e74ac708600fdf7f0f58ba884e82da51283ee2438c9671b6ab664dd33
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvxwM:bG74zYcgT/Ekd0ryfjkmM
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2868-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a0000000233ea-13.dat CryptoLocker_rule2 behavioral2/memory/2868-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1112-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1112 hasfj.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 2868 wrote to memory of 1112 2868 2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe 83 PID 2868 wrote to memory of 1112 2868 2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe 83 PID 2868 wrote to memory of 1112 2868 2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_1ead185e1c0b1e9a65cbeb09d095851e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2868 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:1112
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD59616019c13c6cd64bf2538c5dc03f6ef
SHA18173b26fb7f559bccaaa2bc971c20ce85b2c6cc5
SHA256fc05936b1ff6a249c573d8223e9619769b6f8765457f2b57e35347624e68ef4b
SHA5124430e79c33646bf747bd03a10bc7b96d4641a3c46e8a5496f6f2ef71c64d69fce768e265f848c14ff07e45baac003c9647cac4c8de58dcd64541aadc6d2aeb1c