Analysis
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max time kernel
140s -
max time network
152s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 11:34
Static task
static1
Behavioral task
behavioral1
Sample
2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll
Resource
win10-en-20211208
General
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Target
2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll
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Size
1.7MB
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MD5
3bd7357d0ba62270d8c3bcff6e335820
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SHA1
1619e10be5789fab0f69e26353ee0e9669b4c7ad
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SHA256
2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3
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SHA512
cf35c7a66feb38a01ab082d44d2153ad6f97349d210a07966f9b5154e94f121bbf2cf31dd7e499e54188f2a0857a1c92837e2de69b640e3e1adf0b04ee89e746
Malware Config
Signatures
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Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2948 3776 rundll32.exe 67 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/2948-259-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 2 IoCs
flow pid Process 47 2948 rundll32.exe 48 2948 rundll32.exe -
Loads dropped DLL 3 IoCs
pid Process 3776 EXCEL.EXE 3776 EXCEL.EXE 2948 rundll32.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3776 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE 3776 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3776 wrote to memory of 2948 3776 EXCEL.EXE 70 PID 3776 wrote to memory of 2948 3776 EXCEL.EXE 70
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3776 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectR.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
PID:2948
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