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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
17/02/2024, 07:44
Behavioral task
behavioral1
Sample
2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe
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Size
86KB
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MD5
9b0172ced68b5ef4059e4f9a28f6e13d
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SHA1
05ab84b60b756b95a8f78c11e8eaf0a119b887e3
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SHA256
804dc20f1e1b3d0d1d03faf57b92c5469bbcea8a3d273ccdbb315cfd840c8f7a
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SHA512
edb66fb9e611cb1400ee2540f4eacfeba689eab926a171449192d6ac89a833dbaf17c19d968bca181cd5c31937855bc2d3241a474e8741e6a0817f4f4ec72916
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgKYv:AnBdOOtEvwDpj6zz
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1680-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c0000000122fa-14.dat CryptoLocker_rule2 behavioral1/files/0x000c0000000122fa-11.dat CryptoLocker_rule2 behavioral1/memory/2976-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1680-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c0000000122fa-14.dat CryptoLocker_set1 behavioral1/files/0x000c0000000122fa-11.dat CryptoLocker_set1 behavioral1/memory/2976-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1680-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000c0000000122fa-14.dat UPX behavioral1/files/0x000c0000000122fa-11.dat UPX behavioral1/memory/2976-18-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2976 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1680 2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe -
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1680-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000c0000000122fa-14.dat upx behavioral1/files/0x000c0000000122fa-11.dat upx behavioral1/memory/2976-18-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F000-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 1680 wrote to memory of 2976 1680 2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe 28 PID 1680 wrote to memory of 2976 1680 2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe 28 PID 1680 wrote to memory of 2976 1680 2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe 28 PID 1680 wrote to memory of 2976 1680 2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-17_9b0172ced68b5ef4059e4f9a28f6e13d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2976
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD531b75a257a9c4790fa9b3e3a936ce063
SHA11e930ff6b17fee830bdbfc054d33510f810cd39f
SHA25603b1c075b4ea211b9a859b1a29e1d6f027081db0ccbe6d1a2c955b02f66af494
SHA5129ef52a55baa0007b3098b022f227343d485da31cf4c9db2255441b8fd016156919d273735fc4f697fe34b3569faf865b9c7e795b30818d0cbc02f3550c2a941e
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Filesize
86KB
MD568380b6bd66f260c43b98ad011de12e6
SHA1173fddfe62c144b7b8ead78975270c21506a34c4
SHA256fa7bfc20b1cbbd10fcbc1486b6013f441adc965618cda4019831db5c20568be2
SHA51208775ef76dda9e024df0c1ba36b255e91ac2c840b5a4b9c5dc7ef4a0d08d7466812ab9ca733da26bcca251f4d5817cfb2b185352c3e88e01a1b1581677bb8a82