2b81c268899390357d88de000b6900a1e9f4a1a3d38758ca72a7cba8a10ffc41

General

Target

document-833903906.xls
Size

138KB
MD5

470389c3c34c9b3d1d58a7efb6179237
SHA1

9116d7f83ad5a5b43597de56dcb332e486815584
SHA256

c032a0487a642468e1b68214348460209213a066d5cb8e9d9a361a116daa3bd0
SHA512

957929a1846e80a9ab07f984a550d18fad35f1c84abfe8e7665f3a945ca7e2dd807478933f728cbe51e2bbb1572625c60dd9190ec678e384507011939eebc0c5

Score

10^/10

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.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1176	528	rundll32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

528 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 528 wrote to memory of 1176 528 EXCEL.EXE rundll32.exe
PID 528 wrote to memory of 1176 528 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 528 wrote to memory of 1176	528	EXCEL.EXE	rundll32.exe
PID 528 wrote to memory of 1176	528	EXCEL.EXE	rundll32.exe

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-833903906.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:528

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1176

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/528-2-0x00007FFA91E20000-0x00007FFA91E30000-memory.dmp

Filesize
64KB

Download
memory/528-3-0x00007FFA91E20000-0x00007FFA91E30000-memory.dmp

Filesize
64KB

Download
memory/528-4-0x00007FFA91E20000-0x00007FFA91E30000-memory.dmp

Filesize
64KB

Download
memory/528-5-0x00007FFA91E20000-0x00007FFA91E30000-memory.dmp

Filesize
64KB

Download
memory/528-6-0x00007FFAB5B80000-0x00007FFAB61B7000-memory.dmp

Filesize
6.2MB

Download
memory/1176-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads