784701d5138d608aacea3c83d5326af091766d37bc8be5f8aebb8d238f8249fa

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

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

Windows security bypass 2 TTPs 2 IoCs

Disable or Modify Tools

Modify Registry

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

Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs

Query Registry

Virtualization/Sandbox Evasion

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

Query Registry

Virtualization/Sandbox Evasion

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

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

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

pid	Process
4556	svchost.exe

Windows security modification 2 TTPs 3 IoCs

Disable or Modify Tools

Modify Registry

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

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

System Information Discovery

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

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

description	pid	Process	procid_target
PID 4556 set thread context of 1616	4556	svchost.exe	106

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
536	schtasks.exe

Delays execution with timeout.exe 1 IoCs

pid	Process
1704	timeout.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

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

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

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

description	pid	Process	procid_target
PID 2696 wrote to memory of 4412	2696	xx-lavacrypt-dfgs.exe	89
PID 2696 wrote to memory of 4412	2696	xx-lavacrypt-dfgs.exe	89
PID 2696 wrote to memory of 968	2696	xx-lavacrypt-dfgs.exe	90
PID 2696 wrote to memory of 968	2696	xx-lavacrypt-dfgs.exe	90
PID 968 wrote to memory of 1704	968	cmd.exe	94
PID 968 wrote to memory of 1704	968	cmd.exe	94
PID 4412 wrote to memory of 536	4412	cmd.exe	93
PID 4412 wrote to memory of 536	4412	cmd.exe	93
PID 968 wrote to memory of 4556	968	cmd.exe	97
PID 968 wrote to memory of 4556	968	cmd.exe	97
PID 4556 wrote to memory of 1228	4556	svchost.exe	105
PID 4556 wrote to memory of 1228	4556	svchost.exe	105
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 1616	4556	svchost.exe	106
PID 4556 wrote to memory of 4532	4556	svchost.exe	107
PID 4556 wrote to memory of 4532	4556	svchost.exe	107
PID 1616 wrote to memory of 4852	1616	iexplore.exe	109
PID 1616 wrote to memory of 4852	1616	iexplore.exe	109
PID 1616 wrote to memory of 1160	1616	iexplore.exe	115
PID 1616 wrote to memory of 1160	1616	iexplore.exe	115
PID 1616 wrote to memory of 2324	1616	iexplore.exe	119
PID 1616 wrote to memory of 2324	1616	iexplore.exe	119
PID 1616 wrote to memory of 5060	1616	iexplore.exe	124
PID 1616 wrote to memory of 5060	1616	iexplore.exe	124
PID 1616 wrote to memory of 636	1616	iexplore.exe	127
PID 1616 wrote to memory of 636	1616	iexplore.exe	127
PID 1616 wrote to memory of 852	1616	iexplore.exe	130
PID 1616 wrote to memory of 852	1616	iexplore.exe	130
PID 1616 wrote to memory of 1416	1616	iexplore.exe	135
PID 1616 wrote to memory of 1416	1616	iexplore.exe	135
PID 1616 wrote to memory of 2952	1616	iexplore.exe	139
PID 1616 wrote to memory of 2952	1616	iexplore.exe	139
PID 1616 wrote to memory of 2776	1616	iexplore.exe	142
PID 1616 wrote to memory of 2776	1616	iexplore.exe	142
PID 1616 wrote to memory of 652	1616	iexplore.exe	146
PID 1616 wrote to memory of 652	1616	iexplore.exe	146
PID 1616 wrote to memory of 1972	1616	iexplore.exe	149
PID 1616 wrote to memory of 1972	1616	iexplore.exe	149
PID 1616 wrote to memory of 3756	1616	iexplore.exe	152
PID 1616 wrote to memory of 3756	1616	iexplore.exe	152
PID 1616 wrote to memory of 3388	1616	iexplore.exe	156
PID 1616 wrote to memory of 3388	1616	iexplore.exe	156
PID 1616 wrote to memory of 4644	1616	iexplore.exe	159
PID 1616 wrote to memory of 4644	1616	iexplore.exe	159
PID 1616 wrote to memory of 4580	1616	iexplore.exe	162
PID 1616 wrote to memory of 4580	1616	iexplore.exe	162
PID 1616 wrote to memory of 4572	1616	iexplore.exe	168
PID 1616 wrote to memory of 4572	1616	iexplore.exe	168
PID 1616 wrote to memory of 3004	1616	iexplore.exe	176
PID 1616 wrote to memory of 3004	1616	iexplore.exe	176
PID 1616 wrote to memory of 748	1616	iexplore.exe	179
PID 1616 wrote to memory of 748	1616	iexplore.exe	179
PID 1616 wrote to memory of 3996	1616	iexplore.exe	183
PID 1616 wrote to memory of 3996	1616	iexplore.exe	183
PID 1616 wrote to memory of 4412	1616	iexplore.exe	186
PID 1616 wrote to memory of 4412	1616	iexplore.exe	186

System policy modification 1 TTPs 1 IoCs

Modify Registry

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

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

T1547.001

Scheduled Task/Job

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion