Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
21/06/2024, 01:34
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
00a98388951738fe4724428a18140614.dll
Resource
win7-20240611-en
windows7-x64
3 signatures
150 seconds
General
- Target 00a98388951738fe4724428a18140614.dll
- Size 75KB
- Sample240621-bzcblsvdnc
- SHA256 eee514a491f37781b7ad980042313612bee96496dc19356fbd72f021337e4f25
- MD5 00a98388951738fe4724428a18140614
- SHA1 5a6dcb1ca720a9405802d5bb5b1d215da9b31e98
- SHA512 b5f6368529d724d4ba7b738e343482906f5de5ed41a23d8908089df65eefa0ff60221936f03c8389cce206c2e9ee1df06f3a35d7618aa5f263acbe547198c669
- SSDEEP 1536:NI/LK1dX5lX+5nWrjf3v7XqSaIaKW154kf:OIx+5nef3v7XbHaKK4kf
- 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\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\ = "HTML Source Editor" regsvr32.exe - Modifies registry class 46 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ = "Imm" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm\CurVer\ = "Html.mm.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\VersionIndependentProgID\ = "Html.mm" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\ProgID\ = "Html.mm.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\00a98388951738fe4724428a18140614.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm\ = "mm Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\00a98388951738fe4724428a18140614.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm\CLSID\ = "{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\ = "mm Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ = "Imm" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm.1\ = "mm Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm.1\CLSID\ = "{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\TypeLib\ = "{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib\ = "{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Html.mm\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2E8A6CF6-3500-4A7D-9F54-69CD76D367D2}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}\1.0\ = "html 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{0554B271-D716-476B-88E1-D24F37A0F77A}\TypeLib\ = "{4CD5DEF2-FA06-4F6F-93D2-E79D88F8F477}" regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1736 wrote to memory of 2820 1736 regsvr32.exe 81 PID 1736 wrote to memory of 2820 1736 regsvr32.exe 81 PID 1736 wrote to memory of 2820 1736 regsvr32.exe 81
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\00a98388951738fe4724428a18140614.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\00a98388951738fe4724428a18140614.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2820
-