f13c921f12cfc961113a9a602b7c0d7e64c608d177b1aa7c8a1af170442786fa

General

Target

document-1609338658.xls
Size

90KB
MD5

f31c6710bcf92c36958adca6e70fb221
SHA1

585e83e3d119d67a3e410a407691c9e3c4e90762
SHA256

5936a9016b4193ed9a521d335e0f8d6c3f2bf658ba9ecd700da3f2574599ebc3
SHA512

9b3cc1ed8d4867879c6838d3c29c73bf40af602de9abc269a9698c331d8cf44e884d828b84ae12f621a7a2cab2bf11f8174bde2b0cfa45a9ff55251f3fb01feb

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	816	1232	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

1232 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE
1232	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 1232 wrote to memory of 816 1232 EXCEL.EXE rundll32.exe
PID 1232 wrote to memory of 816 1232 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 1232 wrote to memory of 816	1232	EXCEL.EXE	rundll32.exe
PID 1232 wrote to memory of 816	1232	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-1609338658.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1232

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\rieuro.vnt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:816

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/816-7-0x0000000000000000-mapping.dmp

Download
memory/1232-2-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1232-3-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1232-4-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download
memory/1232-5-0x00007FFE21A00000-0x00007FFE22037000-memory.dmp

Filesize
6.2MB

Download
memory/1232-6-0x00007FFDFD230000-0x00007FFDFD240000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads