Analysis
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max time kernel
149s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
19/02/2024, 20:26
Behavioral task
behavioral1
Sample
2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe
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Size
56KB
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MD5
2497b2bd465fa40c1d8ced4538d9a739
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SHA1
0aaecbf561f0fd549b91a676fde042470d1743a4
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SHA256
c591e4d3fa630f8c5c022527d28fdb90bc9213c1238b487d277b7bf3e98fa93c
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SHA512
e8d758eec7691c2f0ecc0d984c766baee9e3942c7cb063b606dc1e7e5ff8f48153d4d1a8d79427cbe4d54198ddc14820b30ebdf5d28760c579d46a5db10b6651
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axc9Cie:z6QFElP6n+gKmddpMOtEvwDpj9aYap1
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2848-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012233-11.dat CryptoLocker_rule2 behavioral1/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2848-15-0x0000000001EB0000-0x0000000001EC0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2848-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2700-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2848-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0008000000012233-11.dat CryptoLocker_set1 behavioral1/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2848-15-0x0000000001EB0000-0x0000000001EC0000-memory.dmp CryptoLocker_set1 behavioral1/memory/2848-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2700-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2848-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0008000000012233-11.dat UPX behavioral1/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2848-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2700-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2700 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2848 2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe -
resource yara_rule behavioral1/memory/2848-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0008000000012233-11.dat upx behavioral1/memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2848-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2700-27-0x0000000000500000-0x0000000000510000-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 2848 wrote to memory of 2700 2848 2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe 28 PID 2848 wrote to memory of 2700 2848 2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe 28 PID 2848 wrote to memory of 2700 2848 2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe 28 PID 2848 wrote to memory of 2700 2848 2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2700
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5845b9b9550e8f573dea558f702691cff
SHA1db8dbe299e329cb6fcd511292ac8d3d55ad50088
SHA2561d8fbe9648f2a9a85ef7dd6fbd388a4d9224d1982859cdd4e0ed7d309edd5fd9
SHA51202d20f36db904d05248f913ad75ed71a8ec210e4b59b281c583cf93baf880331bb3641443af915ffe326a0e5504d9e70d9b6be02c7ae119639ca28c5562f98d9