Analysis
- max time kernel
119s - max time network
120s - platform
windows7_x64 - resource
win7-20240215-en - resource tags
- submitted
12/06/2024, 01:27
General
- Target 553ff1a6d805c5bc4001fe69e6bbf70859ebf43dcd6eba63913eb588ec4e4617.exe
- Size 683KB
- Sample240612-bval8axfmk
- SHA256 553ff1a6d805c5bc4001fe69e6bbf70859ebf43dcd6eba63913eb588ec4e4617
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.springandsummer.lk
-
Port
587
-
Username
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Password
anu##323
-
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\553ff1a6d805c5bc4001fe69e6bbf70859ebf43dcd6eba63913eb588ec4e4617.exe"C:\Users\Admin\AppData\Local\Temp\553ff1a6d805c5bc4001fe69e6bbf70859ebf43dcd6eba63913eb588ec4e4617.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\553ff1a6d805c5bc4001fe69e6bbf70859ebf43dcd6eba63913eb588ec4e4617.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\djNREAnN.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\djNREAnN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E56.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
tmp5E56.tmp
d93f411851d7c929.customDestinations-ms
memory/2416-4-0x0000000000AB0000-0x0000000000ABE000-memory.dmp
memory/2416-32-0x0000000074910000-0x0000000074FFE000-memory.dmp
memory/2416-0-0x000000007491E000-0x000000007491F000-memory.dmp
memory/2416-5-0x0000000000AC0000-0x0000000000AD0000-memory.dmp
memory/2416-6-0x0000000001290000-0x0000000001312000-memory.dmp
memory/2416-2-0x0000000074910000-0x0000000074FFE000-memory.dmp
memory/2416-1-0x0000000001310000-0x00000000013BE000-memory.dmp
memory/2416-3-0x0000000000580000-0x0000000000596000-memory.dmp
memory/2468-21-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-31-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2468-28-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-23-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-20-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2468-29-0x0000000000400000-0x0000000000442000-memory.dmp