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Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
23/01/2024, 18:42
Behavioral task
behavioral1
Sample
2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe
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Size
78KB
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MD5
00531770a79e57dab01611817e739289
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SHA1
60164b534d264053be6b5c2255035fcc454faba9
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SHA256
695a54a5aa9e8bc3d0bbed4af380fd7b6764721e9942023a439373c7de117edd
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SHA512
c1e131efef10108ba227e9e5fe23d33dda46a816083c47580284a824e537b86974d406ab6d6739b739550df91bbcf472a04d50040e79d286bf4c79d2f30f9814
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7pBlqrr1HBJooSeKzu1adyBM:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky2
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000800000001225a-11.dat CryptoLocker_rule2 behavioral1/memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2660-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2660-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000800000001225a-11.dat CryptoLocker_set1 behavioral1/memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2660-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2660-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000800000001225a-11.dat UPX behavioral1/memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2660-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2660-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2660 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2088 2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe -
resource yara_rule behavioral1/memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000800000001225a-11.dat upx behavioral1/memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2660-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2660-26-0x0000000000500000-0x0000000000510000-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 2088 wrote to memory of 2660 2088 2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe 28 PID 2088 wrote to memory of 2660 2088 2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe 28 PID 2088 wrote to memory of 2660 2088 2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe 28 PID 2088 wrote to memory of 2660 2088 2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2660
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
78KB
MD520a50dace6337ab8c138bbe08ccfec58
SHA1398e99d77c3ea8680f86d3403a99461534bb3a01
SHA256874a10729342b0143f16d9016a9a50edf23a8709119a18a8724417c709641846
SHA5120271a50a480945cb39e4dfdf728e19d1fe820df7861fbd05a56cb985533cae754be131ffaed993cb29dd0da0d77d0d7036995795c6edf0c5514e8e8783213fc3