784701d5138d608aacea3c83d5326af091766d37bc8be5f8aebb8d238f8249fa

Virtualization/Sandbox Evasion

Processes:

xx-lavacrypt-dfgs.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	xx-lavacrypt-dfgs.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:

xx-lavacrypt-dfgs.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	xx-lavacrypt-dfgs.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:

xx-lavacrypt-dfgs.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	xx-lavacrypt-dfgs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	xx-lavacrypt-dfgs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

Processes:

xx-lavacrypt-dfgs.exesvchost.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	xx-lavacrypt-dfgs.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

4556 svchost.exe

pid	process
4556	svchost.exe

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

xx-lavacrypt-dfgs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	xx-lavacrypt-dfgs.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

Processes:

svchost.exe

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

xx-lavacrypt-dfgs.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	xx-lavacrypt-dfgs.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	xx-lavacrypt-dfgs.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 4556 set thread context of 1616 4556 svchost.exe iexplore.exe
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
T1053

Processes:

schtasks.exe

pid process

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

Processes:

timeout.exe

pid process

1704 timeout.exe

description	pid	process	target process
PID 4556 set thread context of 1616	4556	svchost.exe	iexplore.exe

pid	process
536	schtasks.exe

pid	process
1704	timeout.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

xx-lavacrypt-dfgs.exepowershell.exe

pid	process
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
2696	xx-lavacrypt-dfgs.exe
1228	powershell.exe
1228	powershell.exe
1228	powershell.exe

Suspicious behavior: MapViewOfSection 64 IoCs

Processes:

iexplore.exe

pid	process
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe
1616	iexplore.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

xx-lavacrypt-dfgs.exesvchost.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2696 xx-lavacrypt-dfgs.exe
Token: SeDebugPrivilege 4556 svchost.exe
Token: SeDebugPrivilege 1228 powershell.exe

description	pid	process
Token: SeDebugPrivilege	2696	xx-lavacrypt-dfgs.exe
Token: SeDebugPrivilege	4556	svchost.exe
Token: SeDebugPrivilege	1228	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

xx-lavacrypt-dfgs.execmd.execmd.exesvchost.exeiexplore.exe

description	pid	process	target process
PID 2696 wrote to memory of 4412	2696	xx-lavacrypt-dfgs.exe	cmd.exe
PID 2696 wrote to memory of 4412	2696	xx-lavacrypt-dfgs.exe	cmd.exe
PID 2696 wrote to memory of 968	2696	xx-lavacrypt-dfgs.exe	cmd.exe
PID 2696 wrote to memory of 968	2696	xx-lavacrypt-dfgs.exe	cmd.exe
PID 968 wrote to memory of 1704	968	cmd.exe	timeout.exe
PID 968 wrote to memory of 1704	968	cmd.exe	timeout.exe
PID 4412 wrote to memory of 536	4412	cmd.exe	schtasks.exe
PID 4412 wrote to memory of 536	4412	cmd.exe	schtasks.exe
PID 968 wrote to memory of 4556	968	cmd.exe	svchost.exe
PID 968 wrote to memory of 4556	968	cmd.exe	svchost.exe
PID 4556 wrote to memory of 1228	4556	svchost.exe	powershell.exe
PID 4556 wrote to memory of 1228	4556	svchost.exe	powershell.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 1616	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 4532	4556	svchost.exe	iexplore.exe
PID 4556 wrote to memory of 4532	4556	svchost.exe	iexplore.exe
PID 1616 wrote to memory of 4852	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 4852	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 1160	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 1160	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 2324	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 2324	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 5060	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 5060	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 636	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 636	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 852	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 852	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 1416	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 1416	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 2952	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 2952	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 2776	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 2776	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 652	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 652	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 1972	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 1972	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 3756	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 3756	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 3388	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 3388	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 4644	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 4644	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 4580	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 4580	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 4572	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 4572	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 3004	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 3004	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 748	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 748	1616	iexplore.exe	cmd.exe
PID 1616 wrote to memory of 3996	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 3996	1616	iexplore.exe	explorer.exe
PID 1616 wrote to memory of 4412	1616	iexplore.exe	svchost.exe
PID 1616 wrote to memory of 4412	1616	iexplore.exe	svchost.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

C:\Users\Admin\AppData\Local\Temp\xx-lavacrypt-dfgs.exe
"C:\Users\Admin\AppData\Local\Temp\xx-lavacrypt-dfgs.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2696

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:4412

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:536

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5C0A.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1704

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- 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:4556

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:1228

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
4⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1616

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:4852

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:1160

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:2324

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:5060

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:636

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:852

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:1416

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:2952

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:2776

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:652

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:1972

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:3756

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:3388

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:4644

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:4580

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:4572

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:3004

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:748

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:3996

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:4412

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:4128

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:3036

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:4344

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:3864

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:2996

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:1624

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:1780

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:4444

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:4064

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:1944

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:1540

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:1968

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:4816

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
5⤵
PID:816

C:\Windows\system32\svchost.exe
"C:\Windows\system32\svchost.exe"
5⤵
PID:1220

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
5⤵
PID:3020

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
4⤵
PID:4532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

5

Virtualization/Sandbox Evasion

2