Analysis
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max time kernel
141s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
17-09-2024 02:58
Static task
static1
Behavioral task
behavioral1
Sample
PO-136477475364.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
PO-136477475364.exe
Resource
win10v2004-20240802-en
General
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Target
PO-136477475364.exe
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Size
1.2MB
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MD5
f533a8bfbbc2396cab09b1d64ec8206f
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SHA1
f4c554b1dfaeb870a3ec584abe293b0212e2f2f6
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SHA256
968e835ddb77634082095a04add6efc6db48489371cd6763e626d00d4e4334ef
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SHA512
4904704611b4fc09556c58f2e60b6b2c6d894d647eedc4b2f3f459742260489904dda586a9ecd86231c10930d075f064435f1caca2604474119f66c746e2b80d
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SSDEEP
24576:3AHnh+eWsN3skA4RV1Hom2KXMmHaNmXbcrAtM1aCB8uSH5:qh+ZkldoPK8YaNmXbcrAtM1hWuO
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla payload 1 IoCs
resource yara_rule behavioral2/memory/2224-4-0x0000000000400000-0x000000000045A000-memory.dmp family_agenttesla -
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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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 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe Key opened \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MefbZIXopp = "C:\\Users\\Public\\MefbZIXopp.vbs" PO-136477475364.exe Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyApp = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MyApp\\MyApp.exe" RegAsm.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 38 checkip.amazonaws.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1196 set thread context of 2224 1196 PO-136477475364.exe 82 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PO-136477475364.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 30 IoCs
pid Process 1196 PO-136477475364.exe 1196 PO-136477475364.exe 2224 RegAsm.exe 2224 RegAsm.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2224 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe -
Suspicious use of SendNotifyMessage 3 IoCs
pid Process 1196 PO-136477475364.exe 1196 PO-136477475364.exe 1196 PO-136477475364.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2224 RegAsm.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 1196 wrote to memory of 2224 1196 PO-136477475364.exe 82 PID 1196 wrote to memory of 2224 1196 PO-136477475364.exe 82 PID 1196 wrote to memory of 2224 1196 PO-136477475364.exe 82 PID 1196 wrote to memory of 2224 1196 PO-136477475364.exe 82 PID 1196 wrote to memory of 2224 1196 PO-136477475364.exe 82 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegAsm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO-136477475364.exe"C:\Users\Admin\AppData\Local\Temp\PO-136477475364.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2224
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1