Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
11/06/2024, 01:27
General
- Target a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe
- Size 727KB
- Sample240611-bt5e7sydrf
- SHA256 a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.elektronikkutu.com
-
Port
587
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Username
-
Password
9U:e3@wpS3:U7h_V
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.elektronikkutu.com
-
Port
587
-
Username
-
Password
9U:e3@wpS3:U7h_V
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe"C:\Users\Admin\AppData\Local\Temp\a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\Roaming\xvwuXirVRT.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xvwuXirVRT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp667A.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe"C:\Users\Admin\AppData\Local\Temp\a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_aj0nywdp.i4x.ps1
tmp667A.tmp
memory/1036-6-0x00000000067C0000-0x00000000067E2000-memory.dmp
memory/1036-3-0x0000000004E60000-0x0000000004EF2000-memory.dmp
memory/1036-4-0x0000000004E50000-0x0000000004E5A000-memory.dmp
memory/1036-5-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/1036-2-0x0000000005330000-0x00000000058D4000-memory.dmp
memory/1036-7-0x00000000026E0000-0x00000000026F0000-memory.dmp
memory/1036-8-0x0000000009020000-0x00000000090A4000-memory.dmp
memory/1036-9-0x000000000C140000-0x000000000C1DC000-memory.dmp
memory/1036-0-0x0000000074E1E000-0x0000000074E1F000-memory.dmp
memory/1036-35-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/1036-1-0x00000000003A0000-0x0000000000456000-memory.dmp
memory/2764-52-0x0000000007AB0000-0x0000000007ACA000-memory.dmp
memory/2764-54-0x0000000007D30000-0x0000000007DC6000-memory.dmp
memory/2764-19-0x00000000058B0000-0x00000000058D2000-memory.dmp
memory/2764-22-0x0000000006120000-0x0000000006186000-memory.dmp
memory/2764-16-0x0000000005910000-0x0000000005F38000-memory.dmp
memory/2764-63-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/2764-33-0x0000000006290000-0x00000000065E4000-memory.dmp
memory/2764-60-0x0000000007DD0000-0x0000000007DD8000-memory.dmp
memory/2764-20-0x00000000060B0000-0x0000000006116000-memory.dmp
memory/2764-15-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/2764-36-0x0000000006780000-0x000000000679E000-memory.dmp
memory/2764-37-0x0000000006830000-0x000000000687C000-memory.dmp
memory/2764-38-0x0000000006DA0000-0x0000000006DD2000-memory.dmp
memory/2764-39-0x0000000071500000-0x000000007154C000-memory.dmp
memory/2764-49-0x0000000006D30000-0x0000000006D4E000-memory.dmp
memory/2764-50-0x00000000079C0000-0x0000000007A63000-memory.dmp
memory/2764-51-0x00000000080F0000-0x000000000876A000-memory.dmp
memory/2764-14-0x00000000051D0000-0x0000000005206000-memory.dmp
memory/2764-53-0x0000000007B20000-0x0000000007B2A000-memory.dmp
memory/2764-17-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/2764-55-0x0000000007CB0000-0x0000000007CC1000-memory.dmp
memory/2764-56-0x0000000007CE0000-0x0000000007CEE000-memory.dmp
memory/2764-57-0x0000000007CF0000-0x0000000007D04000-memory.dmp
memory/2764-59-0x0000000007DF0000-0x0000000007E0A000-memory.dmp
memory/4552-58-0x00000000068B0000-0x0000000006900000-memory.dmp
memory/4552-21-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4552-34-0x0000000074E10000-0x00000000755C0000-memory.dmp
memory/4552-64-0x0000000074E10000-0x00000000755C0000-memory.dmp