a9f4281f82b3579581c389e8583dc9f477c7fd0e20c9dfc91a2e611e21e3407e

General

Target

gmpopenh264.dll
Size

997KB
MD5

fe3355639648c417e8307c6d051e3e37
SHA1

f54602d4b4778da21bc97c7238fc66aa68c8ee34
SHA256

1ed7877024be63a049da98733fd282c16bd620530a4fb580dacec3a78ace914e
SHA512

8f4030bb2464b98eccbea6f06eb186d7216932702d94f6b84c56419e9cf65a18309711ab342d1513bf85aed402bc3535a70db4395874828f0d35c278dd2eac9c
SSDEEP

12288:vYLdTfFKbNSjv92eFN+3wH+NYriA0Iq6lh6VawYIpAvwHN/Uf1h47HAfg1oet:vYLdTZ923NYrjwNpgwef1hzfg1x

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 15 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

firefox.exefirefox.exefirefox.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe

Modifies registry class 1 IoCs

Processes:

OpenWith.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\Local Settings OpenWith.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

OpenWith.exe

pid process

4492 OpenWith.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

NOTEPAD.EXE

pid process

3836 NOTEPAD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\Local Settings	OpenWith.exe

pid	process
3836	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 21 IoCs

Processes:

OpenWith.exe

pid	process
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe
4492	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

OpenWith.exe

description	pid	process	target process
PID 4492 wrote to memory of 3836	4492	OpenWith.exe	NOTEPAD.EXE
PID 4492 wrote to memory of 3836	4492	OpenWith.exe	NOTEPAD.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gmpopenh264.dll,#1
1⤵
PID:4896

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Checks processor information in registry
PID:3156

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Checks processor information in registry
PID:532

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Checks processor information in registry
PID:1052

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.0.681256591\433592765" -parentBuildID 20221007134813 -prefsHandle 1800 -prefMapHandle 1792 -prefsLen 20749 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {44e825f9-3688-49aa-9124-13404c0cb893} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 1880 19a6adf6558 gpu
1⤵
PID:3908

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.1.562992399\257087416" -parentBuildID 20221007134813 -prefsHandle 2252 -prefMapHandle 2248 -prefsLen 20785 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {174cc99a-9eda-4a3e-8bb6-675241946bff} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 2272 19a6aafc558 socket
1⤵
PID:3788

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.2.1672746484\561133194" -childID 1 -isForBrowser -prefsHandle 3096 -prefMapHandle 2816 -prefsLen 20888 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ddd31e3b-eda9-41c0-9a17-a25432bc80a8} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 3024 19a6e640a58 tab
1⤵
PID:3996

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.3.1458810308\383397673" -childID 2 -isForBrowser -prefsHandle 1324 -prefMapHandle 1096 -prefsLen 26066 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d1cdbac9-00e3-437b-b8b6-f3d85926901d} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 2416 19a5e275e58 tab
1⤵
PID:3124

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.4.1805678388\1591656522" -childID 3 -isForBrowser -prefsHandle 3776 -prefMapHandle 3772 -prefsLen 26066 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {90a2fc3e-439e-471b-b71d-bd0519861327} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 3792 19a5e26a258 tab
1⤵
PID:5076

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.6.1139414716\733737674" -childID 5 -isForBrowser -prefsHandle 4936 -prefMapHandle 4932 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {7a64769b-312c-4201-98b5-71814846797b} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 4956 19a70babe58 tab
1⤵
PID:1368

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.5.2092628074\1251446125" -childID 4 -isForBrowser -prefsHandle 4912 -prefMapHandle 4908 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {29ef2a50-cf86-40dd-8d86-794021a5effa} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 4928 19a6ec47858 tab
1⤵
PID:2156

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4688.7.1399878270\1369614544" -childID 6 -isForBrowser -prefsHandle 5176 -prefMapHandle 5172 -prefsLen 26206 -prefMapSize 233444 -jsInitHandle 1288 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {c1608a79-c6b4-41d1-b3d9-ae35bb52a278} 4688 "\\.\pipe\gecko-crash-server-pipe.4688" 5184 19a70baac58 tab
1⤵
PID:2720

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1852

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Temp1_openh264-win64-2e1774ab6dc6c43debb0b5b628bdf122a391d521.zip\gmpopenh264.info
  2⤵
  - Suspicious use of FindShellTrayWindow
  PID:3836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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