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
31/05/2024, 15:53
Behavioral task
behavioral1
Sample
2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe
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Size
40KB
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MD5
8a9f60e10293364644e5540dd74eb404
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SHA1
f5fc87574e40a95b1f67ca7c2e22a8a295b24d32
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SHA256
2610f1bcc56f972a6bd51658ce834900cb35ec468939b4ebc8c89acafb0ee825
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SHA512
4c74b4607485695d6e5d3d451cd586be7295e63329eb649f458fbf626134ef78be19f18abeffa3af32914b4f772396214ce5c92c026beebb944db1d384f05547
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8Z1EC:qDdFJy3QMOtEvwDpjjWMl7Tdn8ZOC
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1036-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000700000001211d-11.dat CryptoLocker_rule2 behavioral1/memory/1036-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1036-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2312-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2312-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1036-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000700000001211d-11.dat CryptoLocker_set1 behavioral1/memory/1036-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp CryptoLocker_set1 behavioral1/memory/1036-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2312-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2312-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1036-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000700000001211d-11.dat UPX behavioral1/memory/1036-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp UPX behavioral1/memory/1036-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2312-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2312-28-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2312 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1036 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe -
resource yara_rule behavioral1/memory/1036-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000700000001211d-11.dat upx behavioral1/memory/1036-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp upx behavioral1/memory/1036-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2312-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2312-28-0x0000000000500000-0x0000000000510000-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 1036 wrote to memory of 2312 1036 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe 28 PID 1036 wrote to memory of 2312 1036 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe 28 PID 1036 wrote to memory of 2312 1036 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe 28 PID 1036 wrote to memory of 2312 1036 2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_8a9f60e10293364644e5540dd74eb404_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1036 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2312
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD541bea78bdaad6da26c632d3303d4b97a
SHA174b15ba3388a60e8c44da12c59e8b45e303cf921
SHA2564124c4a289f21bce7e7d666307aee3846b83dbd3533d35288b1f016010d5f78e
SHA512d90f34412ff55ad13a8ee2ef4eee35af2c84490b37bc8b38e9232bb58505430daf39d642b87d1283704ed80de614c53477c06575306c1a61cc2266163f978dbe