f133d9793f6d163107acdbc329944de41fa1f91da03aa8ba382867e1b0420e17

General

Target

document-1610559818.xls
Size

90KB
MD5

166d0e4e50303630b148a09eed5c3d46
SHA1

ad2c322456653198f0474a6f32f4c6e0e6e23dc5
SHA256

c5a856a5c3981d8fbb0aa1043c82b790f803fd0dcc8dff18f45499211707a531
SHA512

41c2bfd37226e721107ae8090b785255f6be628bc84cbbcc708e37ab973f4333a7fab791209589be4afd01626569b0f043a6d7eb559352cb4e0c4a41e90c3939

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	4020	648	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

648 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 648 wrote to memory of 4020 648 EXCEL.EXE rundll32.exe
PID 648 wrote to memory of 4020 648 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 648 wrote to memory of 4020	648	EXCEL.EXE	rundll32.exe
PID 648 wrote to memory of 4020	648	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-1610559818.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:648

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\rieuro.vnt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4020

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/648-2-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-3-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-4-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-5-0x00007FF851B30000-0x00007FF852167000-memory.dmp

Filesize
6.2MB

Download
memory/648-6-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/4020-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads