7c3d0cd8b4bff1ebf1cdce8cb0413bec6cd68c6580f9708f8257d3babd1820eb

General

Target

document-1444787431.xls
Size

90KB
MD5

3561877f0685930b467f49e00e1f5265
SHA1

d70ac9e9f8d3d7f71886e5204468e431ebff4538
SHA256

96cf591ab3eb5ca14724c2ed5084a21ef64608d1f54a866f7fad15d013306213
SHA512

176914efb16b793293325042a456b72e3f53fbaf4dae140b3cfc34523bfd3e35467ce44681cc5d48da6b99071a0857a3f8c41191b54e24d03b7a277390242a19

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	4076	412	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

412 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE
412	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 412 wrote to memory of 4076 412 EXCEL.EXE rundll32.exe
PID 412 wrote to memory of 4076 412 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 412 wrote to memory of 4076	412	EXCEL.EXE	rundll32.exe
PID 412 wrote to memory of 4076	412	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-1444787431.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:412

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\rieuro.vnt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4076

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/412-2-0x00007FFD654A0000-0x00007FFD654B0000-memory.dmp

Filesize
64KB

Download
memory/412-3-0x00007FFD654A0000-0x00007FFD654B0000-memory.dmp

Filesize
64KB

Download
memory/412-4-0x00007FFD654A0000-0x00007FFD654B0000-memory.dmp

Filesize
64KB

Download
memory/412-5-0x00007FFD88A80000-0x00007FFD890B7000-memory.dmp

Filesize
6.2MB

Download
memory/412-6-0x00007FFD654A0000-0x00007FFD654B0000-memory.dmp

Filesize
64KB

Download
memory/4076-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads