Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
13-01-2025 16:05
General
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Target
2025-01-13_149b334f85bbd7a24ab55c53ab03ba8e_bkransomware.exe
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Size
573KB
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MD5
149b334f85bbd7a24ab55c53ab03ba8e
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SHA1
de025845597e99ceaefbe481dcac1629134138ec
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SHA256
54640459e29ae0685e2a9981cb3bf57690623a1b4d3ce61aeee3c1fe6ac3a196
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SHA512
32904758695e6368d2fafb54ebf6d17e0d990cabe885a94aeaf59e46b8f1159e9d78d34234e2dcb181db75855e476c625aba2e989f02456820790c7d1fe96835
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SSDEEP
12288:crtmE2OVIDRhIbCLm/A4xQ9ZYCuzNB0JfiwSdYSui8:c72NhIm6oxYxNsfiTdYSuV
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Agenttesla family
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AgentTesla payload 4 IoCs
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Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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Program crash 1 IoCs
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious behavior: MapViewOfSection 1 IoCs
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Suspicious behavior: RenamesItself 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 4 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-01-13_149b334f85bbd7a24ab55c53ab03ba8e_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-13_149b334f85bbd7a24ab55c53ab03ba8e_bkransomware.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2025-01-13_149b334f85bbd7a24ab55c53ab03ba8e_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-13_149b334f85bbd7a24ab55c53ab03ba8e_bkransomware.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 7562⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3640 -ip 36401⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5.7MB
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Filesize
5.7MB
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Filesize
300KB
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Filesize
300KB
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Filesize
5.7MB
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Filesize
4KB
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Filesize
300KB
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Filesize
5.7MB
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Filesize
300KB
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Filesize
5.7MB
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Filesize
5.7MB
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Filesize
4KB
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Filesize
5.7MB
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Filesize
596KB
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Filesize
5.7MB
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Filesize
1024KB