Analysis
-
max time kernel
141s -
max time network
141s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-03-2021 19:52
Behavioral task
behavioral1
Sample
document-194221672.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
document-194221672.xls
Resource
win10v20201028
General
-
Target
document-194221672.xls
-
Size
138KB
-
MD5
bdcfbe6c0fa5b2c2839c178b8a7073a4
-
SHA1
62a31cfef45125d3915fa7bc37f7e334b693893a
-
SHA256
54f34e88d1b6fdae2410b448e86fc75d7dcf2f524a588610325adff2a7883925
-
SHA512
735d1a4dfd5666ab637f20eb468160926bbf018c26ea808d58334373c66092f56a99f77c2765258427f54598dd366615687a76c1d6dd1f78a6f7b13ed7fb89f6
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 3924 740 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 740 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE 740 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 740 wrote to memory of 3924 740 EXCEL.EXE rundll32.exe PID 740 wrote to memory of 3924 740 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-194221672.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:3924
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/740-2-0x00007FFD4E120000-0x00007FFD4E130000-memory.dmpFilesize
64KB
-
memory/740-3-0x00007FFD4E120000-0x00007FFD4E130000-memory.dmpFilesize
64KB
-
memory/740-4-0x00007FFD4E120000-0x00007FFD4E130000-memory.dmpFilesize
64KB
-
memory/740-5-0x00007FFD4E120000-0x00007FFD4E130000-memory.dmpFilesize
64KB
-
memory/740-6-0x00007FFD71220000-0x00007FFD71857000-memory.dmpFilesize
6.2MB
-
memory/3924-7-0x0000000000000000-mapping.dmp