Analysis
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max time kernel
136s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
19/01/2022, 12:14
Static task
static1
Behavioral task
behavioral1
Sample
FF-1642594447.xll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
FF-1642594447.xll
Resource
win10v2004-en-20220113
General
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Target
FF-1642594447.xll
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Size
1.7MB
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MD5
c29a9e09451389facd0961601a531605
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SHA1
129c8b45205e56810e34505aa1f3aff3d0021bbe
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SHA256
fa938c8e0833e3d8a642ab29cb8ecfde8d1ef574837d41a7e4a7c1676ec91531
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SHA512
c656bc2107993b36a2ce9bef0d67cdaee1b9d8573770d9033705fe6fff14c6d93915024bcc7fda1006283f7b6ae65a32244e294abc3a3c0a5e0d497fb4a1458b
Malware Config
Extracted
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 1120 1144 rundll32.exe 51 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral2/memory/1120-154-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Loads dropped DLL 3 IoCs
pid Process 1144 EXCEL.EXE 1144 EXCEL.EXE 1120 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1144 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE 1144 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1144 wrote to memory of 1120 1144 EXCEL.EXE 61 PID 1144 wrote to memory of 1120 1144 EXCEL.EXE 61
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\FF-1642594447.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:1144 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectiveU.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:1120
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