Analysis
- max time kernel
121s - max time network
143s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
22/01/2022, 13:16
Static task
static1
Behavioral task
behavioral1
Sample
a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.xll
Resource
win7-en-20211208
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.xll
Resource
win10-en-20211208
0 signatures
0 seconds
General
- Target a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.xll
- Size 1.7MB
- Sample220122-qhsplabddl
- SHA256 a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307
- MD5 bfb1b2f9aa7755412860adab0a3afdae
- SHA1 0ba24e86e619756898841fc6652cca4ec3c6b1e9
- SHA512 63463339debf10792d496aa0bdc93949728d047375449ad9cdc813128ecc5d196dfebde102cc4243930349d773514cb8d7e94eb8d0aa6d6dc217532a9fb60461
- 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 1812 2776 rundll32.exe 67 - Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral2/memory/1812-263-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 - Loads dropped DLL 3 IoCs
pid Process 2776 EXCEL.EXE 2776 EXCEL.EXE 1812 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\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 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 2776 EXCEL.EXE - Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE 2776 EXCEL.EXE - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2776 wrote to memory of 1812 2776 EXCEL.EXE 72 PID 2776 wrote to memory of 1812 2776 EXCEL.EXE 72
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\a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.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:2776 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectK.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:1812
-