b08dccba7b50a181160d47d504146388142a223d21bcfb84f9d26c2b964f374f

General

Target

document-197066197.xls
Size

90KB
MD5

b1b373079e3ce83ccea85c2c6c50f10c
SHA1

9917e63c334dd1d81182631a5776c922f797d2f3
SHA256

edfb3775902364ce01d274c0203c78d849f2cfdd07e05bd165649288f7185e1c
SHA512

31c9702a7825c27b38422543fe97ff41ffbdf1442b8b0cba62c61f28aac87428047a5efd6ca9ca5540d88c5dd5fdeff3e9cc7db12a8f34219216a0f484ce64cc

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	1736	4768	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 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

4768 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4768 wrote to memory of 1736	4768	EXCEL.EXE	rundll32.exe
PID 4768 wrote to memory of 1736	4768	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-197066197.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4768

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\rieuro.vnt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1736

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/1736-7-0x0000000000000000-mapping.dmp

Download
memory/4768-2-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-3-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-4-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-5-0x00007FF93F800000-0x00007FF93FE37000-memory.dmp

Filesize
6.2MB

Download
memory/4768-6-0x00007FF91BD80000-0x00007FF91BD90000-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