agenttesla | f98beea10e3733a148773f478688e0dc9e7d4d2c4c0e80c7a5678c662798b065

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	scan4022.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	scan4022.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	scan4022.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	scan4022.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	scan4022.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	scan4022.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan4022.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan4022.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan4022.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\audio.dg = "C:\\Users\\Admin\\AppData\\Roaming\\audio.dg\\audio.dg.exe"	scan4022.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	scan4022.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	scan4022.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4248 set thread context of 2156	4248	scan4022.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

pid	Process
1244	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
4248	scan4022.exe
2484	powershell.exe
2156	scan4022.exe
2156	scan4022.exe
2484	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	scan4022.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	2156	scan4022.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2156	scan4022.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 2484	4248	scan4022.exe	91
PID 4248 wrote to memory of 2484	4248	scan4022.exe	91
PID 4248 wrote to memory of 2484	4248	scan4022.exe	91
PID 4248 wrote to memory of 1244	4248	scan4022.exe	93
PID 4248 wrote to memory of 1244	4248	scan4022.exe	93
PID 4248 wrote to memory of 1244	4248	scan4022.exe	93
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95
PID 4248 wrote to memory of 2156	4248	scan4022.exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan4022.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan4022.exe

C:\Users\Admin\AppData\Local\Temp\scan4022.exe
"C:\Users\Admin\AppData\Local\Temp\scan4022.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iyftIzk.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iyftIzk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp410B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1244
- C:\Users\Admin\AppData\Local\Temp\scan4022.exe
  "C:\Users\Admin\AppData\Local\Temp\scan4022.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion