Analysis
- max time kernel
93s - max time network
123s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
05/02/2024, 09:37
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
91a6b3d8f7e761729e6cef1fbc220170.dll
Resource
win7-20231129-en
windows7-x64
3 signatures
150 seconds
General
- Target 91a6b3d8f7e761729e6cef1fbc220170.dll
- Size 17KB
- Sample240205-llmkjaehdl
- SHA256 ede39bc6067edd3f41ceda4d86659ff973a41693589ac6eaf48b0ed49df68470
- MD5 91a6b3d8f7e761729e6cef1fbc220170
- SHA1 9dc6e99374dd153c351ba24aab7302c37b516e9f
- SHA512 598724506a187da84ad8a2408cfc00f5f54c8f22530d9ec558ffb79aa666a50be897c08acaec890af81246b277485e6638a6bcd5f1befc16e754a5be4ff1f048
- SSDEEP 192:Hyx/J2PybdbHp8IJisUIwMJEdeinHwr5p3wxq1KMzW9Tb0++yGVAoCeXG/36ce/:yBiIQsxj+nnY3Eq1nq9TYZTja3e
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\ = "cj helper" regsvr32.exe - Modifies registry class 46 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ = "Icjmgr" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib\ = "{E63648F7-3933-440E-B4F6-A8584DD7B7EB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr.1\CLSID\ = "{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\TypeLib\ = "{E63648F7-3933-440E-B4F6-A8584DD7B7EB}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\91a6b3d8f7e761729e6cef1fbc220170.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ = "Icjmgr" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib\ = "{E63648F7-3933-440E-B4F6-A8584DD7B7EB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr\ = "cjmgr Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr\CurVer\ = "CJ.cjmgr.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\VersionIndependentProgID\ = "CJ.cjmgr" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\ = "cjmgr Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\ProgID\ = "CJ.cjmgr.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\ = "cj 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr.1\ = "cjmgr Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr\CLSID\ = "{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\91a6b3d8f7e761729e6cef1fbc220170.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CJ.cjmgr\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F10587E9-0E47-4CBE-84AE-7DD20B8684BB}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E63648F7-3933-440E-B4F6-A8584DD7B7EB}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1212 wrote to memory of 2472 1212 regsvr32.exe 84 PID 1212 wrote to memory of 2472 1212 regsvr32.exe 84 PID 1212 wrote to memory of 2472 1212 regsvr32.exe 84
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\91a6b3d8f7e761729e6cef1fbc220170.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1212 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\91a6b3d8f7e761729e6cef1fbc220170.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2472
-