agenttesla | 89b26887cf47af7365dfd7fb75252fb86badd55bdc8d87829efd7f63803d1029

Virtualization/Sandbox Evasion

Processes:

Bank Copy.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Bank Copy.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	svchost.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

Bank Copy.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	Bank Copy.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	svchost.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

Processes:

Bank Copy.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Bank Copy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Bank Copy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1368 svchost.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

1116 cmd.exe
1116 cmd.exe

pid	process
1368	svchost.exe

pid	process
1116	cmd.exe
1116	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Bank Copy.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	Bank Copy.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

Processes:

svchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

Bank Copy.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Bank Copy.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Bank Copy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	svchost.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

svchost.exe

description pid process target process

PID 1368 set thread context of 1400 1368 svchost.exe Setup.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1632 1400 WerFault.exe Setup.exe
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
T1053

Processes:

schtasks.exe

pid process

760 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1316 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Bank Copy.exepowershell.exe

pid process

1060 Bank Copy.exe
1944 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Bank Copy.exesvchost.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1060 Bank Copy.exe
Token: SeDebugPrivilege 1368 svchost.exe
Token: SeDebugPrivilege 1944 powershell.exe

description	pid	process	target process
PID 1368 set thread context of 1400	1368	svchost.exe	Setup.exe

pid	pid_target	process	target process
1632	1400	WerFault.exe	Setup.exe

pid	process
760	schtasks.exe

pid	process
1316	timeout.exe

pid	process
1060	Bank Copy.exe
1944	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1060	Bank Copy.exe
Token: SeDebugPrivilege	1368	svchost.exe
Token: SeDebugPrivilege	1944	powershell.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

Bank Copy.execmd.execmd.exesvchost.exeSetup.exe

description	pid	process	target process
PID 1060 wrote to memory of 776	1060	Bank Copy.exe	cmd.exe
PID 1060 wrote to memory of 776	1060	Bank Copy.exe	cmd.exe
PID 1060 wrote to memory of 776	1060	Bank Copy.exe	cmd.exe
PID 1060 wrote to memory of 1116	1060	Bank Copy.exe	cmd.exe
PID 1060 wrote to memory of 1116	1060	Bank Copy.exe	cmd.exe
PID 1060 wrote to memory of 1116	1060	Bank Copy.exe	cmd.exe
PID 776 wrote to memory of 760	776	cmd.exe	schtasks.exe
PID 776 wrote to memory of 760	776	cmd.exe	schtasks.exe
PID 776 wrote to memory of 760	776	cmd.exe	schtasks.exe
PID 1116 wrote to memory of 1316	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1316	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1316	1116	cmd.exe	timeout.exe
PID 1116 wrote to memory of 1368	1116	cmd.exe	svchost.exe
PID 1116 wrote to memory of 1368	1116	cmd.exe	svchost.exe
PID 1116 wrote to memory of 1368	1116	cmd.exe	svchost.exe
PID 1368 wrote to memory of 1944	1368	svchost.exe	powershell.exe
PID 1368 wrote to memory of 1944	1368	svchost.exe	powershell.exe
PID 1368 wrote to memory of 1944	1368	svchost.exe	powershell.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1368 wrote to memory of 1400	1368	svchost.exe	Setup.exe
PID 1400 wrote to memory of 1632	1400	Setup.exe	WerFault.exe
PID 1400 wrote to memory of 1632	1400	Setup.exe	WerFault.exe
PID 1400 wrote to memory of 1632	1400	Setup.exe	WerFault.exe
PID 1400 wrote to memory of 1632	1400	Setup.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

C:\Users\Admin\AppData\Local\Temp\Bank Copy.exe
"C:\Users\Admin\AppData\Local\Temp\Bank Copy.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:776

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:760

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1D42.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1316

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- UAC bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1368

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1944

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SetupCache\v4.7.03062\Setup.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SetupCache\v4.7.03062\Setup.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:1400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1400 -s 304
5⤵
- Program crash
PID:1632

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Bypass User Account Control

Scheduled Task

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

Virtualization/Sandbox Evasion

2