agenttesla | cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.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	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.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	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.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-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
Key opened	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
Key opened	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.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	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97

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

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/Job

pid	Process
2560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4468	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
4468	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4468	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2560	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	95
PID 1916 wrote to memory of 2560	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	95
PID 1916 wrote to memory of 2560	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	95
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97
PID 1916 wrote to memory of 4468	1916	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe

C:\Users\Admin\AppData\Local\Temp\cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
"C:\Users\Admin\AppData\Local\Temp\cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.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 use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rLAbLfCavTuDwJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2560
- C:\Users\Admin\AppData\Local\Temp\cd6655eae6994bf4dc8037faad921ef7ad7f3eb4cc7110f1e7e53916154dff95.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

Persistence

Scheduled Task/Job

1

Privilege Escalation

Scheduled Task/Job

1

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

Virtualization/Sandbox Evasion