Analysis
- max time kernel
118s - max time network
123s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
21/05/2024, 01:47
General
- Target fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe
- Size 731KB
- Sample240521-b7271aef6x
- SHA256 fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0
Malware Config
Extracted
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agenttesla
-
Protocol
smtp
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Host
mail.shaktiinstrumentations.in
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Port
587
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Username
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Password
Shakti54231!@#$%#@!
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Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 5 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 11 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 24 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe"C:\Users\Admin\AppData\Local\Temp\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\fcaaf8296552e9a4bb23f21e2c88801c3783a163626b44b6cef6e17bbde07bf0.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NNSwwLIbU.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NNSwwLIbU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEBE5.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmpEBE5.tmp
N0IQZTKZX2U8IWDZ7E3E.temp
memory/928-30-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-24-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-20-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-22-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-27-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-29-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-31-0x0000000000400000-0x0000000000442000-memory.dmp
memory/928-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2224-3-0x0000000000610000-0x0000000000632000-memory.dmp
memory/2224-2-0x0000000073F20000-0x000000007460E000-memory.dmp
memory/2224-4-0x00000000003A0000-0x00000000003AC000-memory.dmp
memory/2224-7-0x0000000073F2E000-0x0000000073F2F000-memory.dmp
memory/2224-6-0x00000000004D0000-0x0000000000554000-memory.dmp
memory/2224-1-0x00000000011B0000-0x000000000126A000-memory.dmp
memory/2224-5-0x00000000003C0000-0x00000000003D0000-memory.dmp
memory/2224-0-0x0000000073F2E000-0x0000000073F2F000-memory.dmp
memory/2224-32-0x0000000073F20000-0x000000007460E000-memory.dmp