Analysis
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max time kernel
147s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
11/06/2024, 01:15
Behavioral task
behavioral1
Sample
2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe
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Size
37KB
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MD5
b408293ae4f662d45be20e4c9b16a66c
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SHA1
9241d8c10cddb2f196c05475b230730ecc6ddb50
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SHA256
325d5d71d46e770dc4a7f29385707e8639899ec2c141165f2bc2a92f948e0b6e
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SHA512
3cfc73efae48022fc71250d4c302c45e62bc2e807a7f15f79f94b6125d0ada62e4805a135c0daa78a59ad513041ffbfa1e516c54a64dae12df1bcf7cf6ad394d
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SSDEEP
768:qU6yu4M3Eu2smnbcuyD7U9dtOOtEvwDpjeMLa5zZyR/Ad10:qUZbMb2pnouy8TMOtEvwDpjja7yRr
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000f00000001214d-11.dat CryptoLocker_rule2 behavioral1/memory/1660-13-0x0000000002740000-0x000000000274F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2368-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1660-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2368-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2368-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1660-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2368-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000f00000001214d-11.dat UPX behavioral1/memory/1660-13-0x0000000002740000-0x000000000274F000-memory.dmp UPX behavioral1/memory/2368-18-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1660-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2368-28-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2368 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1660 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe -
resource yara_rule behavioral1/memory/1660-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000f00000001214d-11.dat upx behavioral1/memory/1660-13-0x0000000002740000-0x000000000274F000-memory.dmp upx behavioral1/memory/2368-18-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1660-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2368-28-0x0000000000500000-0x000000000050F000-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 1660 wrote to memory of 2368 1660 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe 28 PID 1660 wrote to memory of 2368 1660 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe 28 PID 1660 wrote to memory of 2368 1660 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe 28 PID 1660 wrote to memory of 2368 1660 2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1660 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2368
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD5b71e30ee47624a6b12bf395af03d480c
SHA13b5ff85d6dcb6e9a09d05ceda68561477693677c
SHA25645eabb473c1dfd56b8c02bd60177d475cd403d5d63e8dff9dd2794abc9bb94ad
SHA512a91a2d088e308fa538c27d764f7b2cabf8389912ac468b31bd7c1025c99dec3d01b5362f29a167dbf637740badc7b60b05d81b444977b4f3277367a771cde4d8