bitrat | 8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91

Virtualization/Sandbox Evasion

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

Executes dropped EXE 2 IoCs

Processes:

Bypass.exeDefender.exe

pid process

4732 Bypass.exe
1656 Defender.exe

pid	process
4732	Bypass.exe
1656	Defender.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4672-154-0x0000000000400000-0x00000000007E3000-memory.dmp	upx
behavioral2/memory/4672-155-0x0000000000400000-0x00000000007E3000-memory.dmp	upx
behavioral2/memory/4672-157-0x0000000000400000-0x00000000007E3000-memory.dmp	upx
behavioral2/memory/4672-159-0x0000000000400000-0x00000000007E3000-memory.dmp	upx
behavioral2/memory/4672-161-0x0000000000400000-0x00000000007E3000-memory.dmp	upx
behavioral2/memory/4672-177-0x0000000000400000-0x00000000007E3000-memory.dmp	upx

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

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

Drops startup file 3 IoCs

Processes:

cmd.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bypass.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Edge.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Process.exe	cmd.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

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

RegSvcs.exe

pid process

4672 RegSvcs.exe
4672 RegSvcs.exe
4672 RegSvcs.exe
4672 RegSvcs.exe

pid	process
4672	RegSvcs.exe
4672	RegSvcs.exe
4672	RegSvcs.exe
4672	RegSvcs.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exeRegSvcs.exe

description	pid	process	target process
PID 2168 set thread context of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 1780 set thread context of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 set thread context of 4672	1780	RegSvcs.exe	RegSvcs.exe

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
T1053

Processes:

schtasks.exe

pid process

1740 schtasks.exe

pid	process
1740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

pid	process
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exeRegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
Token: SeShutdownPrivilege	4672	RegSvcs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

RegSvcs.exe

pid process

4672 RegSvcs.exe
4672 RegSvcs.exe

pid	process
4672	RegSvcs.exe
4672	RegSvcs.exe

Suspicious use of WriteProcessMemory 56 IoCs

Processes:

8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exeRegSvcs.exeRegSvcs.execmd.exeBypass.exe

description	pid	process	target process
PID 2168 wrote to memory of 1740	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	schtasks.exe
PID 2168 wrote to memory of 1740	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	schtasks.exe
PID 2168 wrote to memory of 1740	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	schtasks.exe
PID 2168 wrote to memory of 2248	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2248	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2248	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2736	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2736	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2736	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2968	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2968	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 2968	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 2168 wrote to memory of 1780	2168	8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe	RegSvcs.exe
PID 1780 wrote to memory of 3116	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3116	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3116	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3604	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3604	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3604	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 3852	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 1780 wrote to memory of 4672	1780	RegSvcs.exe	RegSvcs.exe
PID 3852 wrote to memory of 4568	3852	RegSvcs.exe	cmd.exe
PID 3852 wrote to memory of 4568	3852	RegSvcs.exe	cmd.exe
PID 4568 wrote to memory of 4732	4568	cmd.exe	Bypass.exe
PID 4568 wrote to memory of 4732	4568	cmd.exe	Bypass.exe
PID 4568 wrote to memory of 4732	4568	cmd.exe	Bypass.exe
PID 4732 wrote to memory of 1656	4732	Bypass.exe	Defender.exe
PID 4732 wrote to memory of 1656	4732	Bypass.exe	Defender.exe
PID 4732 wrote to memory of 1656	4732	Bypass.exe	Defender.exe

C:\Users\Admin\AppData\Local\Temp\8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.exe
"C:\Users\Admin\AppData\Local\Temp\8b941106c15c86f683f9c7420254be7079959c27b096e039e7cdc4a76120cc91.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:2168

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iUIPLVfsH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1519.tmp"
2⤵
- Creates scheduled task(s)
PID:1740

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:2248

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:2736

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:2968

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:3116

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:3604

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:3852

C:\Windows\system32\cmd.exe
"C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\240D.tmp\240E.tmp\240F.bat C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
4⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:4568

C:\Users\Admin\AppData\Local\Temp\240D.tmp\Bypass.exe
Bypass.exe
5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4732

C:\Users\Admin\AppData\Local\Temp\Defender.exe
"C:\Users\Admin\AppData\Local\Temp\Defender.exe" /D
6⤵
- Executes dropped EXE
PID:1656

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion