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
03/06/2024, 07:44
Behavioral task
behavioral1
Sample
2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe
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Size
91KB
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MD5
c489b30c1613bf60f71f6bc81d6a82f3
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SHA1
427718deb37efe1ff55e8cdeaed2c3bdb092b1d2
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SHA256
5d6f29a54e4ebee9959e286bf49ee4e3ff280edb6231c87eaba4532f14af7915
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SHA512
10f9c14c15b00337903441ed56e48bb4d287bae4ef5142262cca26f1ba49fd28eb2af5f8d3a778582f0dbf25e36ef5d864858a8374a97544028b38d15025a882
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyN:n6a+1SEOtEvwDpjYYvQd2P0
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2400-7-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012280-11.dat CryptoLocker_rule2 behavioral1/memory/1036-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2400-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1036-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2400-7-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012280-11.dat CryptoLocker_set1 behavioral1/memory/1036-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2400-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1036-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2400-7-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000012280-11.dat UPX behavioral1/memory/1036-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2400-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1036-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1036 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2400 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe -
resource yara_rule behavioral1/memory/2400-7-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000012280-11.dat upx behavioral1/memory/1036-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2400-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1036-26-0x0000000000500000-0x0000000000510000-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 2400 wrote to memory of 1036 2400 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe 28 PID 2400 wrote to memory of 1036 2400 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe 28 PID 2400 wrote to memory of 1036 2400 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe 28 PID 2400 wrote to memory of 1036 2400 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2400 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1036
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
91KB
MD51cc32f094c3f4a57673425f9654fc033
SHA18d2e94ec7b62778a478eecb31c9764d8501b384b
SHA2566daa110754b84c3705318b61d3e7ade22101bfd17f72709694b6e36b4ed00898
SHA512e3961b4d426a93956b7b0a18081d961fef59b85596509ea84edfeeff36d3b118a8aa2536edd3c326d87b326a79c28b6aa7a2eda33b3a89ca116155bda6d6f4f3