Analysis
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max time kernel
111s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
23-12-2024 11:28
General
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Target
Ref20203216.exe
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Size
150KB
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MD5
9f9df5620e05da5bbf797b8531da35ab
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SHA1
22be3755c61f577fb39e4d71df0f8d9bfb90aa87
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SHA256
e97247599a336032a86ea5cb42b3b9c971567977e245b689d87c3f2ef3d200e4
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SHA512
365554a00606263906af881542ff87999c32d30389798219deb9cb384874a9700eba56ee883b1dc5238890a6a5ea15f8c3861182b267fb0a6b196bcbdf39e480
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SSDEEP
1536:aj9JxITkjSu9L8xIWCPAHWoTwuckbZrSV6ICB3pQpYvNX81zJfqK6XiFZKj:aj+TTup8omWiwLcCxSZQpe5WzJfV62M
Malware Config
Extracted
Protocol: smtp- Host:
162.254.34.31 - Port:
587 - Username:
[email protected] - Password:
ABwuRZS5Mjh5
Extracted
agenttesla
Protocol: smtp- Host:
162.254.34.31 - Port:
587 - Username:
[email protected] - Password:
ABwuRZS5Mjh5 - Email To:
[email protected]
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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Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
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Drops startup file 1 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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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 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 3 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\Ref20203216.exe"C:\Users\Admin\AppData\Local\Temp\Ref20203216.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Ref20203216.exe"C:\Users\Admin\AppData\Local\Temp\Ref20203216.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
256KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
408KB
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Filesize
320KB
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Filesize
7.7MB
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Filesize
40KB
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Filesize
624KB
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Filesize
976KB
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Filesize
976KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
24KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
1000KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
976KB
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Filesize
7.7MB
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Filesize
424KB
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Filesize
304KB
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Filesize
336KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
4KB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
7.7MB
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Filesize
168KB
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Filesize
4KB
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Filesize
7.7MB