Analysis
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max time kernel
141s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
26-09-2024 14:30
Static task
static1
Behavioral task
behavioral1
Sample
b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll
Resource
win7-20240704-en
General
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Target
b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll
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Size
2.3MB
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MD5
53cd9e22e24a5f04b676d03c4354ecaa
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SHA1
a6bf13724a2de2b7c6a79f5574370daec2fff6a4
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SHA256
b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77
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SHA512
8d44a18521b6f09c14a56496e8d68864a7a278e3cab4dae717ca3a74c9e0de8c7c2a4b98e1cbcab88c9b8e98333af396bbd03247b42ef6d440e12173f16a1b7a
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SSDEEP
49152:dDUPp6v4xTkL/xfJJvHSVYdCdme3gEAFQKzRP:dDJiKCdmeQEcQKd
Malware Config
Signatures
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Banload
Banload variants download malicious files, then install and execute the files.
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Detect Blackmoon payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2764-10-0x0000000010000000-0x0000000010379000-memory.dmp family_blackmoon behavioral1/memory/2764-9-0x0000000010000000-0x0000000010379000-memory.dmp family_blackmoon behavioral1/memory/2764-14-0x0000000010000000-0x0000000010379000-memory.dmp family_blackmoon -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate rundll32.exe -
Processes:
resource yara_rule behavioral1/memory/2764-13-0x0000000000270000-0x000000000027B000-memory.dmp upx behavioral1/memory/2764-12-0x0000000000270000-0x000000000027B000-memory.dmp upx -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2624 2764 WerFault.exe rundll32.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Modifies registry class 13 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ProgID\ = "SAPI.SpLexicon.1" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\TypeLib rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\Version rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\VersionIndependentProgID\ = "SAPI.SpLexicon" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ = "SpLexicon Class" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32\ThreadingModel = "Both" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ProgID rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\TypeLib\ = "{C866CA3A-32F7-11D2-9602-00C04F8EE628}" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\Version\ = "5.4" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\VersionIndependentProgID rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32\ = "%SystemRoot%\\SysWow64\\Speech\\Common\\sapi.dll" rundll32.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
rundll32.exedescription pid process Token: 33 2764 rundll32.exe Token: SeIncBasePriorityPrivilege 2764 rundll32.exe Token: SeDebugPrivilege 2764 rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2760 wrote to memory of 2764 2760 rundll32.exe rundll32.exe PID 2764 wrote to memory of 2624 2764 rundll32.exe WerFault.exe PID 2764 wrote to memory of 2624 2764 rundll32.exe WerFault.exe PID 2764 wrote to memory of 2624 2764 rundll32.exe WerFault.exe PID 2764 wrote to memory of 2624 2764 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2764 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 6683⤵
- Program crash
PID:2624
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