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Analysis
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max time kernel
141s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 19:33
Behavioral task
behavioral1
Sample
2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe
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Size
69KB
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MD5
69c9782fe9648090006ec238915006aa
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SHA1
51cc6569512943ea4474c4b1b4f0f3f3ea9764d3
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SHA256
8b8b2444ddba70fedc57edf0607bd23165cc73a8e850c74a5983e98c7f0d3e9f
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SHA512
c0efca8a9ae650ac1cf14abaa36882318d11714e5c661f69dd9eb9a452a99a9ea9475f13eeb19e43496809f18ba8182f8ee33fdd880122056db8f4952e01f3a0
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SSDEEP
1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAeY:78SEOtEvwDpjWYvQd2PV
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015a2d-11.dat CryptoLocker_rule2 behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000015a2d-11.dat CryptoLocker_set1 behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000b000000015a2d-11.dat UPX behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3012 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2648 2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe -
resource yara_rule behavioral1/memory/2648-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000b000000015a2d-11.dat upx behavioral1/memory/2648-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/3012-27-0x0000000000500000-0x000000000050F000-memory.dmp upx -
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 2648 wrote to memory of 3012 2648 2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe 28 PID 2648 wrote to memory of 3012 2648 2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe 28 PID 2648 wrote to memory of 3012 2648 2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe 28 PID 2648 wrote to memory of 3012 2648 2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_69c9782fe9648090006ec238915006aa_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3012
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD5065346d792bc58a094110afd686ad858
SHA1456e25e118122fc45d781ef8b38e01971944ddfa
SHA25686f748759f6cb51835caaf97765722a677b28dc9f1b8e723a79be830b351a22a
SHA512377ed758feeb8142300261665e7e3b325f62884a28f14bd02ae27c32d0818d38c3f30ad3160729b4c74e6741dc9022211a10ec30aa5fe02db9b5e0eb172936c0