Analysis
- max time kernel
141s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
03/02/2024, 02:01
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
8b19995c4851f621afc3472560c5a2fd.dll
Resource
win7-20231215-en
windows7-x64
3 signatures
150 seconds
General
- Target 8b19995c4851f621afc3472560c5a2fd.dll
- Size 152KB
- Sample240203-cfhvqaecf7
- SHA256 cb1b7b4b75ec81918b6505665e0ae4097cb05b43d5aaac88759f9d991a452c1c
- MD5 8b19995c4851f621afc3472560c5a2fd
- SHA1 2449328573406c96f9a4245ba1dabfe720619dc9
- SHA512 bcfdd9f5759582db14d499b87a02e46dd1d853e9ee47cd63b356d575a4a2737616ce29faf57c8a974eca341678aa1fe2fdec171f217d0f8e032fc35334a2b224
- SSDEEP 3072:lkH+E7R1ATwPym2IxTUvA/KaIODLFY1t/UyKeu:GjLiaNBYE7e
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Installs/modifies Browser Helper Object 2 TTPs 1 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\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF} regsvr32.exe - Modifies registry class 46 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib\ = "{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\ProgID\ = "Skype.Control.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ = "IBHOControl" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib\ = "{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl\CurVer\ = "Skype.Control.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\ = "Skype Control Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl.1\ = "Skype Control Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8b19995c4851f621afc3472560c5a2fd.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\ = "IBHOControl" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8b19995c4851f621afc3472560c5a2fd.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\ = "DreamBHO 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl\ = "Skype Control Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\TypeLib\ = "{B3878BF0-95A7-4157-B32E-BE7FAEA62F9E}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl.1\CLSID\ = "{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\DreamBHO.BHOControl\CLSID\ = "{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9018F6A8-2495-45DF-9F16-C738F8F3C8FF}\VersionIndependentProgID\ = "Skype.Control" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2883C34C-1C7B-43CC-B4CC-93B581E87BE1} regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3428 wrote to memory of 2668 3428 regsvr32.exe 83 PID 3428 wrote to memory of 2668 3428 regsvr32.exe 83 PID 3428 wrote to memory of 2668 3428 regsvr32.exe 83
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\8b19995c4851f621afc3472560c5a2fd.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3428 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\8b19995c4851f621afc3472560c5a2fd.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2668
-