Analysis
-
max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
21-03-2024 18:33
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
dc539c526d27d7b9c44726a93e0d03d6.dll
Resource
win7-20240221-en
4 signatures
150 seconds
General
-
Target
dc539c526d27d7b9c44726a93e0d03d6.dll
-
Size
44KB
-
MD5
dc539c526d27d7b9c44726a93e0d03d6
-
SHA1
89f2569f012176cbded4ac8b672de2a9cab0a907
-
SHA256
a670760e91a965fb9a928dd368ff4046f80dc9f8d8233536d2c592e840147930
-
SHA512
681178e1639063b35bc2de75e7e749d39f96b74d121a0721290aec051f0cc064415150a38176727ad5d3194e85f4e616bde765a7d13022d7a5658463d75c8153
-
SSDEEP
768:8fC6sDoZvA7ZlHvXLXTHaDpNXdeBVlWN:8fC6sDoJCXnHaDpjeBVgN
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\{557B9038-FC87-453C-8B08-32D85F46EAC4} regsvr32.exe -
Modifies registry class 46 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA\ = "apronA Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\ProgID\ = "Apron.apronA.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA\CurVer\ = "Apron.apronA.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\VersionIndependentProgID\ = "Apron.apronA" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ = "IapronA" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DC539C~1.DLL" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\TypeLib\ = "{AFF58917-C0BA-4776-9A4C-2C6E124875A4}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\ = "apron 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA.1\ = "apronA Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\ = "apronA Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\ = "IapronA" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA.1\CLSID\ = "{557B9038-FC87-453C-8B08-32D85F46EAC4}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{557B9038-FC87-453C-8B08-32D85F46EAC4} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Apron.apronA\CLSID\ = "{557B9038-FC87-453C-8B08-32D85F46EAC4}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{AFF58917-C0BA-4776-9A4C-2C6E124875A4}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dc539c526d27d7b9c44726a93e0d03d6.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib\ = "{AFF58917-C0BA-4776-9A4C-2C6E124875A4}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{06F95BB1-BBE2-4CC2-B83A-304ACEB38EEF}\TypeLib\ = "{AFF58917-C0BA-4776-9A4C-2C6E124875A4}" regsvr32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4436 regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4704 wrote to memory of 4436 4704 regsvr32.exe 87 PID 4704 wrote to memory of 4436 4704 regsvr32.exe 87 PID 4704 wrote to memory of 4436 4704 regsvr32.exe 87
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\dc539c526d27d7b9c44726a93e0d03d6.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4704 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\dc539c526d27d7b9c44726a93e0d03d6.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4436
-