Analysis
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max time kernel
100s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
26/08/2024, 01:34
Behavioral task
behavioral1
Sample
4133854c92e08079b766c7ebe1a5fe40N.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
4133854c92e08079b766c7ebe1a5fe40N.exe
Resource
win10v2004-20240802-en
General
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Target
4133854c92e08079b766c7ebe1a5fe40N.exe
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Size
75KB
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MD5
4133854c92e08079b766c7ebe1a5fe40
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SHA1
fb83372b8a0c62b6fd60282d219fc93131739538
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SHA256
90e401cf873d9b88b7da8d56cad0ad3c11d63bf6a806b7c7e5fc9926b582552c
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SHA512
f5d3afac113ca881e52d577846e9b96413f2c13bae3e6917e19e1e1c88e6f9be31eacede6608181047fd00f932a0ac7b1e99a1fac1e6bcedaac43709a5929635
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SSDEEP
1536:u0oecLBo7OI1jEfBgLmXT9Y1Lk5DcE2kz7hxfVfnv2HS:/EIeKkTUk120ffVfnwS
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4864 SideTab.exe -
Loads dropped DLL 2 IoCs
pid Process 3296 regsvr32.exe 3404 regsvr32.exe -
resource yara_rule behavioral2/memory/3336-0-0x0000000000400000-0x0000000000438000-memory.dmp upx behavioral2/memory/3336-11-0x0000000000400000-0x0000000000438000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SideTab = "C:\\Program Files (x86)\\SideTab\\SideTab.exe" SideTab.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Installs/modifies Browser Helper Object 2 TTPs 3 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\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\SideTab\SideTab.exe 4133854c92e08079b766c7ebe1a5fe40N.exe File created C:\Program Files (x86)\SideTab\SideTab.dll 4133854c92e08079b766c7ebe1a5fe40N.exe File created C:\Program Files (x86)\SideTab\uninstall.exe 4133854c92e08079b766c7ebe1a5fe40N.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language SideTab.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4133854c92e08079b766c7ebe1a5fe40N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ = "SideTab" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ProgID\ = "SideTab.SideTabCtl.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CurVer\ = "SideTab.SideTabCtl.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\CLSID\ = "{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ = "ISideTabCtl" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0\win32\ = "C:\\Program Files (x86)\\SideTab\\SideTab.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CLSID\ = "{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}" regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32 regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354} regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\VersionIndependentProgID\ = "SideTab.SideTabCtl" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\ = "SideTabCtl Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CLSID\ = "{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\CLSID\ = "{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ = "SideTab" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\VersionIndependentProgID\ = "SideTab.SideTabCtl" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32\ = "C:\\Program Files (x86)\\SideTab\\SideTab.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\ = "SideTabCtl Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32\ = "C:\\Program Files (x86)\\SideTab\\SideTab.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\ = "SideTabCtl Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\ = "SideTab 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0\win32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CurVer\ = "SideTab.SideTabCtl.1" regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\ProgID\ = "SideTab.SideTabCtl.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib regsvr32.exe Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{ADD10401-2CE3-4CAE-84F9-5DF7CB2D0A4D}\InprocServer32 regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 3336 4133854c92e08079b766c7ebe1a5fe40N.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 4864 SideTab.exe 4864 SideTab.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3336 wrote to memory of 3296 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 84 PID 3336 wrote to memory of 3296 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 84 PID 3336 wrote to memory of 3296 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 84 PID 3336 wrote to memory of 4864 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 85 PID 3336 wrote to memory of 4864 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 85 PID 3336 wrote to memory of 4864 3336 4133854c92e08079b766c7ebe1a5fe40N.exe 85 PID 4864 wrote to memory of 3404 4864 SideTab.exe 89 PID 4864 wrote to memory of 3404 4864 SideTab.exe 89 PID 4864 wrote to memory of 3404 4864 SideTab.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\4133854c92e08079b766c7ebe1a5fe40N.exe"C:\Users\Admin\AppData\Local\Temp\4133854c92e08079b766c7ebe1a5fe40N.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3336 -
C:\Windows\SysWOW64\regsvr32.exeregsvr32 /s "C:\Program Files (x86)\SideTab\SideTab.dll"2⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:3296
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C:\Program Files (x86)\SideTab\SideTab.exe"C:\Program Files (x86)\SideTab\SideTab.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4864 -
C:\Windows\SysWOW64\regsvr32.exeregsvr32 /s "C:\Program Files (x86)\SideTab\SideTab.dll"3⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:3404
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Browser Extensions
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
105KB
MD57599ea08224228a4e5733565e91da74e
SHA149576f0d72740a0a23b32076f0ba0cd234606dc4
SHA25660dd30d920d072c9ab65c059f4b056c66e690f037e1b3ac578aed7abe7ce85ea
SHA512313465a977757d76f9d8534b2c8ebc1718b8d51053a3d8a81a126e134733646807083d7c8097f772d78abb8c7488db45aa4f81fb9575b085e0d07156df6e575e
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Filesize
37KB
MD51d1ba1c38ba95f0060cfdbfb85d0ba1e
SHA1a87a2cda496af4bdc0284901d6bd8bb2834afe4c
SHA256936eed57c66c41657cf811ef1e36462c71463daa85e6f87b05311df88c12a8df
SHA5124c5e8869f12e3aa914d238a0886718883970f1401b491aef67aeeb03b0e500c4fc9d20fcf0fd4250a96c9a58bb8e364e923d19c9f2da5c181831cf16519d2db9