6256f4c5ab30074d0e4e26eae4b1feeba98c42f4d3f71b8eb0e86e4990004b3d

General

Target

document-87247454.xls
Size

40KB
MD5

e9e5d831d3d478971af9579f7e15722f
SHA1

ddccda0b12d0669c3400c9e24f1cc641dc9d128f
SHA256

4a62d024a5a5ec539df5c50039879221170a508c74fb29a96ee7c3ff785ba300
SHA512

7b6ea9028be2acefeccc7fe406f8c946251b454f31a8220baa8f1254b768a5fe3847d974446eb30821e052e5ce57690e6d7158352ab7381ed6eb54cf427a7b36

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	1160	640	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\~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

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

640 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 640 wrote to memory of 1160 640 EXCEL.EXE rundll32.exe
PID 640 wrote to memory of 1160 640 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 640 wrote to memory of 1160	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 1160	640	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-87247454.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\fkruf.djr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1160

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/640-2-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-3-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-4-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-5-0x00007FFC34510000-0x00007FFC34B47000-memory.dmp

Filesize
6.2MB

Download
memory/640-6-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/1160-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads