Analysis
- max time kernel
107s - max time network
124s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
22/01/2022, 14:55
Static task
static1
Behavioral task
behavioral1
Sample
59136a8738af5783756405f46526e99f705dd94a14dd2629de96880814dacc0c.xll
Resource
win7-en-20211208
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
59136a8738af5783756405f46526e99f705dd94a14dd2629de96880814dacc0c.xll
Resource
win10-en-20211208
0 signatures
0 seconds
General
- Target 59136a8738af5783756405f46526e99f705dd94a14dd2629de96880814dacc0c.xll
- Size 1.7MB
- Sample220122-satb9sbfh8
- SHA256 59136a8738af5783756405f46526e99f705dd94a14dd2629de96880814dacc0c
- MD5 d9dc8d21d1b662803907276a1c131b2c
- SHA1 ad15b7c845390a2964af34255cf50db8c1c98a8e
- SHA512 680afcc6bd570457b5c146fb9812dbcdf07fc1990c928f5152ac509203accbc8c7e0c194bdd221ac1c01cd63a813218e5b003597293a5e8ddef0fe73a1daca1b
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
- 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 2176 2404 rundll32.exe 67 - Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral2/memory/2176-259-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 - Loads dropped DLL 3 IoCs
pid Process 2404 EXCEL.EXE 2404 EXCEL.EXE 2176 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 2404 EXCEL.EXE - Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2404 wrote to memory of 2176 2404 EXCEL.EXE 70 PID 2404 wrote to memory of 2176 2404 EXCEL.EXE 70
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\59136a8738af5783756405f46526e99f705dd94a14dd2629de96880814dacc0c.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:2404 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectiveK.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:2176
-