Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
21-09-2024 04:27
Behavioral task
behavioral1
Sample
2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
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Size
71KB
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MD5
b73b9e58ced99a08a44a65fad79452ce
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SHA1
c7f2d2011460c6131606636a66f1e7a848e4e308
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SHA256
023944c19a0d3e5aef3e051cf61b0f14bfa8fe28212392c4b55fc95325118f15
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SHA512
955f6f186c4dccb58699288282984dfa237d270fca9cb63e27acbaa418719fb96e9ef6c5a5e5e0816f3749afab4accdb6a320bb40d03ab99fd136282836e3cea
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs93:C4Q2c94OtEvwDpj4H8zS
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2780 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1876 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe -
resource yara_rule behavioral1/memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0007000000012117-11.dat upx behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2780-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language misid.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1876 wrote to memory of 2780 1876 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe 30 PID 1876 wrote to memory of 2780 1876 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe 30 PID 1876 wrote to memory of 2780 1876 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe 30 PID 1876 wrote to memory of 2780 1876 2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2780
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Network
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Remote address:8.8.8.8:53Requestbestccc.comIN AResponsebestccc.comIN A103.91.187.97
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152 B 3
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288 B 219 B 5 5
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190 B 132 B 4 3
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392 B 219 B 5 5
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262 B 52 B 3 1
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MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
72KB
MD513f590548c049442e87c3208062a479d
SHA15e1694c3dc3b2957ca326b832bde9db310465f65
SHA2568e4e5fcdd36ed9898884f97a0fcc66e45b0b9e97685e594f772cb1e7df4075ca
SHA512367f4fbe798b40a1c1cc2274fbf8b5391a3fe01ae1411fae9b9fa00afea67fc5191b92ed11e5c20424547d6b089c7a2e9db79012da0fb220c2213ab6820d5213