Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
09-05-2024 15:03
Behavioral task
behavioral1
Sample
2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe
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Size
40KB
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MD5
d9f741b7e058fdb36f39b4cd916b7844
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SHA1
4c8bca248f6e133fe418cf13981b64298f471030
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SHA256
a6c0ac8eb97cb3dc1d97653736d754b81e0b3e11346ec492c7a9022820c2f1ce
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SHA512
61668c6f611ff2487812660a7bce12ebc708d4553d86b15614d97d6577a79c091c27b1196b63c282ee07f20e7a475c1d95cfa791082f270d142a64a0e125343c
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SSDEEP
768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKc/j:ba6YcA/Xk3wXFXSqAJcr
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2100-0-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012286-11.dat CryptoLocker_rule2 behavioral1/memory/2100-15-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-25-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2100-0-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/files/0x000c000000012286-11.dat UPX behavioral1/memory/2100-15-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/memory/3020-25-0x0000000008000000-0x000000000800F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3020 hasfj.exe -
Loads dropped DLL 1 IoCs
pid Process 2100 2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe -
resource yara_rule behavioral1/memory/2100-0-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/files/0x000c000000012286-11.dat upx behavioral1/memory/2100-15-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/memory/3020-25-0x0000000008000000-0x000000000800F000-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 2100 wrote to memory of 3020 2100 2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe 28 PID 2100 wrote to memory of 3020 2100 2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe 28 PID 2100 wrote to memory of 3020 2100 2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe 28 PID 2100 wrote to memory of 3020 2100 2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2100 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:3020
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD522c056a9c5a0918eb89e2bcae1431b9d
SHA189a0ea1d891a02ef6de42d2a8207a381513f156e
SHA2565b6a8bac456cd564d6163ca88c06267c8a38e975026981c83a704c44cd4e5f4b
SHA51297a98e8942831c16a7ae86428b159100edc174906ec75492859c46694b2f6f54cb9d494dae9ecab536b21386945118d3bd1ad7d77b900ba7527c647763604972