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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
05/06/2024, 22:22
Behavioral task
behavioral1
Sample
2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe
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Size
40KB
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MD5
543464aa8a0a6053a963586836da668e
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SHA1
dcfd97b667bf7f97257f26bf47a1fd9f140ba79d
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SHA256
a891c9d79bcc0ee1399d9b2dc7e94c3acd7cda16440884f2cb82d1a668e49e08
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SHA512
6363200ba4cab21913d929f0776fa4069f337280f50c956913f042ffe359dedd052e50f729cecfc321287a3a608da90b83f751916cf53afbe437eb5ec11c9225
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8R:qDdFJy3QMOtEvwDpjjWMl7Tdn8R
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000f000000012028-11.dat CryptoLocker_rule2 behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000f000000012028-11.dat CryptoLocker_set1 behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000f000000012028-11.dat UPX behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2796 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2108 2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe -
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000f000000012028-11.dat upx behavioral1/memory/2108-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2796-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2108 wrote to memory of 2796 2108 2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe 29 PID 2108 wrote to memory of 2796 2108 2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe 29 PID 2108 wrote to memory of 2796 2108 2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe 29 PID 2108 wrote to memory of 2796 2108 2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-05_543464aa8a0a6053a963586836da668e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2796
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD5c708e4254cbb785f8b2b5396194252eb
SHA19fd7a62bf3f35089588703f47b9668644bd52358
SHA2563d3a5e08bcb9783c29c0ca9447bafe30d19cdabbb757e4eee5242242f5e8ed20
SHA5126971b0b7e34d08e0a46857053068692481c8ffe5b811bb5f7573f8851d6d556106b42d30e250badbec1b2b6161630728a5eb82bb0ee4e31ce6ff37521ea7e0f8