2c1f4ce2ec392135bba8497b0dc5406d52f545f2fe83c83c844fa7b9c5b9d063

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
14-03-2024 02:07

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General

Target

tbu03852/tbhelper.dll
Size

316KB
MD5

8285d06c80bb289d22d7c67c4df2d51c
SHA1

0aa83342fd5d23de18fb5da4c4405ddc5b13d75f
SHA256

d5df73f377bb5113a5e1c4f7872db6ec4753568a1dadf8d5d09798ac9038ad29
SHA512

8de26c47bbcf0ea1dcab869ac21eb6d13751a913903a179fbd3ad8f30f0429b15c60af53c68b2661a7adb34a310ba7d91281da34f0ddfe595c409e11c0f34775
SSDEEP

6144:Kvpv2m1KWKTRgvPrUdT4+ND9et9Q9Pmcl:Kp2mwWKqvPn2AtBM

Score

1^/10

Malware Config

Signatures

Modifies registry class 43 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib\ = "{4509D3CC-B642-4745-B030-645B79522C6D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\ = "ToolbarURLSearchHook Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\tbhelper.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\tbhelper.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\CLSID\ = "{CA3EB689-8F09-4026-AA10-B9534C691CE0}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook.1\CLSID\ = "{CA3EB689-8F09-4026-AA10-B9534C691CE0}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\ = "URLSearchHook 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\ProgID\ = "URLSearchHook.ToolbarURLSearchHook.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\VersionIndependentProgID\ = "URLSearchHook.ToolbarURLSearchHook"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32\ThreadingModel = "both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib\ = "{4509D3CC-B642-4745-B030-645B79522C6D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ = "IToolbarURLSearchHook"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\TypeLib\ = "{4509D3CC-B642-4745-B030-645B79522C6D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ = "IToolbarURLSearchHook"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\ = "ToolbarURLSearchHook Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook.1\ = "ToolbarURLSearchHook Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28
PID 2924 wrote to memory of 2160	2924	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\tbu03852\tbhelper.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\tbu03852\tbhelper.dll
  2⤵
  - Modifies registry class
  PID:2160

Analysis

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Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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