Malware Analysis Report

2024-12-07 11:12

Sample ID 241113-w9yb2szqhl
Target 644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe
SHA256 644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2
Tags
discovery persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2

Threat Level: Shows suspicious behavior

The file 644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 18:37

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 18:37

Reported

2024-11-13 18:39

Platform

win7-20240903-en

Max time kernel

119s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe

"C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2196-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7ee3a85d53b89bae46f7de4e3881f623
SHA1 3216be58edd72a44aa5140cd7aa2f5d7c89036c2
SHA256 7729ffc16230f95c2bd6b6adcd5a83757cbd898cc1bc8e52e87c5a06cfa0233b
SHA512 ed0967eeedac3010e34d6872a1c27c551854e66e129f28284edc65825c0a9ef99c0f4eda15a8f4e4d93a2045e92c4e9587625a839be1c4ea977c1d0be6e5d33e

memory/2196-6-0x00000000001B0000-0x00000000001B3000-memory.dmp

memory/2196-7-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1364-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 18:37

Reported

2024-11-13 18:39

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\microsofthelp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe

"C:\Users\Admin\AppData\Local\Temp\644366cd0fd6ccb041e6a7a07ec77147318022b25b882bef66ac31176a134ac2.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/2884-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7ee3a85d53b89bae46f7de4e3881f623
SHA1 3216be58edd72a44aa5140cd7aa2f5d7c89036c2
SHA256 7729ffc16230f95c2bd6b6adcd5a83757cbd898cc1bc8e52e87c5a06cfa0233b
SHA512 ed0967eeedac3010e34d6872a1c27c551854e66e129f28284edc65825c0a9ef99c0f4eda15a8f4e4d93a2045e92c4e9587625a839be1c4ea977c1d0be6e5d33e

memory/2884-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1100-6-0x0000000000400000-0x0000000000403000-memory.dmp