Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
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submitted
24-05-2024 14:59
General
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Target
2024-05-24_b3cbfa735774845e8c24c6204fbd5985_bkransomware.exe
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Size
135KB
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MD5
b3cbfa735774845e8c24c6204fbd5985
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SHA1
19ee2ee3aaf90024966868a23e1760e5726cde6f
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SHA256
79dec222aefb614211b5cf0089c9a17c20f0908cfeb231fcbb4704d7ff06a084
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SHA512
74c4bdd3a45d20143bd5fe4c716f35f61afd44f1629eb46de14c338a9dea2de468339966f167d03149f184e38bf0ccf0b9bbe277543419da750f89de88ef06d6
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SSDEEP
3072:ZRpAyazIliazTWfvfX9kG/5BCFd22umhkGdBg0:xZ8azCvfNkyL+I2NhkGH
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
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Loads dropped DLL 2 IoCs
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
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Drops file in Windows directory 2 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-24_b3cbfa735774845e8c24c6204fbd5985_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-24_b3cbfa735774845e8c24c6204fbd5985_bkransomware.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\qTbnEvAgFSvuLnc.exeC:\Users\Admin\AppData\Local\Temp\qTbnEvAgFSvuLnc.exe2⤵
- Executes dropped EXE
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C:\Windows\CTS.exe"C:\Windows\CTS.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\CTS.exeFilesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432
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\Users\Admin\AppData\Local\Temp\qTbnEvAgFSvuLnc.exeFilesize
64KB
MD5e97c622b03fb2a2598bf019fbbe29f2c
SHA132698bd1d3a0ff6cf441770d1b2b816285068d19
SHA2565c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160
SHA512db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d