Analysis
-
max time kernel
136s -
max time network
136s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-03-2021 20:56
Behavioral task
behavioral1
Sample
document-1466263755.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-1466263755.xls
Resource
win10v20201028
General
-
Target
document-1466263755.xls
-
Size
138KB
-
MD5
6c87d721511475212b2aeda5636e34e8
-
SHA1
08c219a973dbc94e64a4587c7881a8fb60e6ac54
-
SHA256
dca218e59e43481f87fbd14b198d42e4617a8b67a4d9e1baf6d9f46786c8cb62
-
SHA512
8066761dd396dced3eb57d140f13f03050872e9be313fa84926f5b77ff3d2e1de02c40805e8de31b557c35406fec5c52c36411b0d7ee228dd6862f862606dd2d
Malware Config
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 732 1908 rundll32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEpid process 1908 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE 1908 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1908 wrote to memory of 732 1908 EXCEL.EXE rundll32.exe PID 1908 wrote to memory of 732 1908 EXCEL.EXE rundll32.exe
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\document-1466263755.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/732-7-0x0000000000000000-mapping.dmp
-
memory/1908-2-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmpFilesize
64KB
-
memory/1908-3-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmpFilesize
64KB
-
memory/1908-4-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmpFilesize
64KB
-
memory/1908-5-0x00007FFCA1FA0000-0x00007FFCA25D7000-memory.dmpFilesize
6.2MB
-
memory/1908-6-0x00007FFC7E0E0000-0x00007FFC7E0F0000-memory.dmpFilesize
64KB