Analysis
- max time kernel
145s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
14/06/2024, 01:05
General
- Target 1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe
- Size 1.1MB
- Sample240614-bfvzlssflp
- SHA256 1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.naubahar.com
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Port
587
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Username
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Password
Hum$885+Nn
Extracted
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agenttesla
-
Protocol
smtp
-
Host
mail.naubahar.com
-
Port
587
-
Username
-
Password
Hum$885+Nn
-
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 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 2 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.
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 2 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 15 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe"C:\Users\Admin\AppData\Local\Temp\1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe"1⤵
- Checks computer location settings
- 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\1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.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\QUROYnOYVc.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\QUROYnOYVc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp43F9.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe"C:\Users\Admin\AppData\Local\Temp\1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1028 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
1ac7e58bde311b270cf53ca82e2b5859aa79c53665ea7607873228528d753d8d.exe.log
__PSScriptPolicyTest_avvvh5qo.fi0.ps1
tmp43F9.tmp
memory/868-20-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/868-4-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/868-5-0x0000000004D50000-0x0000000004D5A000-memory.dmp
memory/868-6-0x0000000004FE0000-0x000000000507C000-memory.dmp
memory/868-7-0x0000000007A50000-0x0000000007A6A000-memory.dmp
memory/868-8-0x0000000007A70000-0x0000000007A80000-memory.dmp
memory/868-9-0x0000000007EC0000-0x0000000007F72000-memory.dmp
memory/868-10-0x0000000074BFE000-0x0000000074BFF000-memory.dmp
memory/868-43-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/868-1-0x00000000001B0000-0x00000000002C0000-memory.dmp
memory/868-3-0x0000000004C90000-0x0000000004D22000-memory.dmp
memory/868-2-0x00000000052F0000-0x0000000005894000-memory.dmp
memory/868-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp
memory/2168-11-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/2168-85-0x0000000007AC0000-0x0000000007AD4000-memory.dmp
memory/2168-19-0x0000000005600000-0x0000000005C28000-memory.dmp
memory/2168-16-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/2168-13-0x0000000004F80000-0x0000000004FB6000-memory.dmp
memory/2168-83-0x0000000007AB0000-0x0000000007ABE000-memory.dmp
memory/2168-26-0x0000000005E70000-0x0000000005ED6000-memory.dmp
memory/2168-88-0x0000000007BA0000-0x0000000007BA8000-memory.dmp
memory/2168-80-0x0000000007B00000-0x0000000007B96000-memory.dmp
memory/2168-75-0x0000000007740000-0x00000000077E3000-memory.dmp
memory/2168-12-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/2168-79-0x00000000078F0000-0x00000000078FA000-memory.dmp
memory/2168-92-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/2168-51-0x0000000006560000-0x000000000657E000-memory.dmp
memory/2168-77-0x0000000007ED0000-0x000000000854A000-memory.dmp
memory/2168-53-0x0000000006B20000-0x0000000006B52000-memory.dmp
memory/2168-54-0x0000000071290000-0x00000000712DC000-memory.dmp
memory/3752-28-0x0000000005AE0000-0x0000000005B46000-memory.dmp
memory/3752-25-0x0000000005160000-0x0000000005182000-memory.dmp
memory/3752-64-0x0000000071290000-0x00000000712DC000-memory.dmp
memory/3752-78-0x0000000007480000-0x000000000749A000-memory.dmp
memory/3752-52-0x0000000006180000-0x00000000061CC000-memory.dmp
memory/3752-41-0x0000000005B50000-0x0000000005EA4000-memory.dmp
memory/3752-91-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/3752-21-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/3752-82-0x0000000007680000-0x0000000007691000-memory.dmp
memory/3752-74-0x0000000006700000-0x000000000671E000-memory.dmp
memory/3752-84-0x00000000076B0000-0x00000000076BE000-memory.dmp
memory/3752-24-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/3752-86-0x00000000077C0000-0x00000000077DA000-memory.dmp
memory/3752-22-0x0000000074BF0000-0x00000000753A0000-memory.dmp
memory/3752-87-0x00000000077A0000-0x00000000077A8000-memory.dmp
memory/4108-81-0x0000000006E90000-0x0000000006EE0000-memory.dmp
memory/4108-27-0x0000000000400000-0x0000000000442000-memory.dmp