Analysis
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max time kernel
123s -
max time network
133s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 03:23
Static task
static1
Behavioral task
behavioral1
Sample
7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.xll
Resource
win10-en-20211208
General
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Target
7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.xll
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Size
1.7MB
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MD5
90628329c8fd992adf0ab9530698cc1e
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SHA1
5bdf86da3da6809cf6a231fe8403b9bf6d267308
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SHA256
7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3
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SHA512
ff0cb1e43b57f21307184c5ce0109d28a753cf852888b5161d0ef0c39acffb7a396c3b777634d8d91d2ccd200faf25e4f6b874ef4ff6b9a950750abe8da5f081
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 1856 3484 rundll32.exe 68 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/1856-259-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 4 IoCs
flow pid Process 44 1856 rundll32.exe 45 1856 rundll32.exe 47 1856 rundll32.exe 48 1856 rundll32.exe -
Loads dropped DLL 3 IoCs
pid Process 3484 EXCEL.EXE 3484 EXCEL.EXE 1856 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 3484 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE 3484 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3484 wrote to memory of 1856 3484 EXCEL.EXE 70 PID 3484 wrote to memory of 1856 3484 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\7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.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:3484 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectC.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
PID:1856
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