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Analysis
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max time kernel
147s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
22/02/2024, 10:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe
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Size
51KB
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MD5
2257e8e14725ce11cd1b49a6fff7b1a3
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SHA1
c47ebbcefe6919abf839d60fb8df6139ac4745c5
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SHA256
b7be0d113d0a6a2207c728db14d17a7e733f8e8609f648919b91592d4fc94d63
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SHA512
6d25b9c71f7ef0a843194212fb2d0a30da0a8c8197540b973431d2f145753e3d3563c98b4322df41e3693c1547c984b5cdf2e4e4d1d2c26dea068a0f0bc878fa
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakloo:V6a+pOtEvwDpj4
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0006000000023208-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0006000000023208-12.dat 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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation 2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4176 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 1364 wrote to memory of 4176 1364 2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe 84 PID 1364 wrote to memory of 4176 1364 2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe 84 PID 1364 wrote to memory of 4176 1364 2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_2257e8e14725ce11cd1b49a6fff7b1a3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1364 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4176
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
51KB
MD54bd213629f034666411cb73833033df9
SHA1cd1221123e45961f9ea79b8e0145399ef78c6615
SHA256b40f2e9291751e0c17b68f1d60eb052ee3b9bb714e7b3fdfe443d374275ef8b0
SHA5120f40385dbad9a36b6c79ba68297dca73391270a3968574f594800d810d7be7a4c83be90d9c4862ccea11d309b409c99ac3dc1291e840bf57a7aeba0e4e122b16