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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
25/06/2024, 22:23
Behavioral task
behavioral1
Sample
2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe
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Size
54KB
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MD5
7b3150834ae0eb4b44dbafc9ffaa026d
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SHA1
d084a4cda5efde844bb2734a6a7a4a75077c0256
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SHA256
606250304f55e21f0f3a4ed0d3d0807f2fca7fb84b296417787b216ff66e6742
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SHA512
5f3dc382449a257715034d8dfe1b3675ed84b3e490915bf916ea854a9e0e2b1aa759b2e1a97c2906da86df9ba27a1e7e90dab2a19b41ca0906c22bd1b1ec5223
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SSDEEP
768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP5:b7/y28wZEjbnouy8G76iH/NLpz
Malware Config
Signatures
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Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral1/memory/2232-0-0x0000000000400000-0x000000000040E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c0000000155f7-11.dat CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 2 IoCs
resource yara_rule behavioral1/memory/2232-0-0x0000000000400000-0x000000000040E000-memory.dmp UPX behavioral1/files/0x000c0000000155f7-11.dat UPX -
Executes dropped EXE 1 IoCs
pid Process 2564 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe -
resource yara_rule behavioral1/memory/2232-0-0x0000000000400000-0x000000000040E000-memory.dmp upx behavioral1/files/0x000c0000000155f7-11.dat upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe 2564 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2232 wrote to memory of 2564 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe 28 PID 2232 wrote to memory of 2564 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe 28 PID 2232 wrote to memory of 2564 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe 28 PID 2232 wrote to memory of 2564 2232 2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-25_7b3150834ae0eb4b44dbafc9ffaa026d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2232 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
55KB
MD5ae687314e7e12f5651088071ebfe1780
SHA1c8ddda4ef712ab235c7b4763b1f9e4efa2c168ba
SHA256edb2aa00c3ed2eb30b06b686b71b8b6ab22b9000b630542e47bfe386798fbfed
SHA512f13226b17a8d7d206900722ae50e404d19ea96fa5ef79e91a1a43ddbdf376da5b08910647287349aa38a12e42b9243f5255546a620fe393a259068c7ad7f8c72