dfdc8d8c9d261ccfba9cbbb77dc1a78c2009780f9750361c211ec2041aa38bd4

General

Target

document-701815281.xls
Size

138KB
MD5

7fd4cd71a382b758a29c57136d7262c5
SHA1

f3e3ae83a7a8a884c1a295f3a6d652020d672ff5
SHA256

5081fe0f1b118bb19cd4414caa1d47d14684d6e0bc575f04961f7d15be483cfb
SHA512

aef6ee3683634e796090f1b1eb63a3510071a769728d0e109e5225cb790b8bcab0a590d2ac8c0717a7a700225eb8d784ca374b3c8886ea5ba26d1e4891902caa

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	3932	504	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 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

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

504 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 504 wrote to memory of 3932 504 EXCEL.EXE rundll32.exe
PID 504 wrote to memory of 3932 504 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 504 wrote to memory of 3932	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3932	504	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-701815281.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:504

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3932

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/504-2-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-3-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-4-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-5-0x00007FF803280000-0x00007FF8038B7000-memory.dmp

Filesize
6.2MB

Download
memory/504-6-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/3932-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads