Malware Analysis Report

2024-11-15 09:49

Sample ID 241110-b1jgbazjhr
Target dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN
SHA256 dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990f
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

dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990f

Threat Level: Shows suspicious behavior

The file dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN 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

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 01:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:36

Reported

2024-11-10 01:38

Platform

win7-20240729-en

Max time kernel

119s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.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\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe

"C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2336-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2336-6-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 495d22365b8dacbab48789ce76c5ff97
SHA1 7a2241c9d0e59c08a92664dec28b7ceae72b004e
SHA256 fec157317aca20b911bdb219f9fc1accf511c81e68b664541b39e1af9be3a1ed
SHA512 8b05d1e9c888abe94a67255f15c50895460d4203409df6f3e708553f6b77a2c098f674d66e12289b40cb83d7c2b19c2017357e6be671a9a21baaf52cb472d0ee

memory/2880-9-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:36

Reported

2024-11-10 01:38

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.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\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.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\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe

"C:\Users\Admin\AppData\Local\Temp\dfc246812f2e54b370d5597c8d1cfa964179da876e23d23ded539cc78855990fN.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/2308-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 495d22365b8dacbab48789ce76c5ff97
SHA1 7a2241c9d0e59c08a92664dec28b7ceae72b004e
SHA256 fec157317aca20b911bdb219f9fc1accf511c81e68b664541b39e1af9be3a1ed
SHA512 8b05d1e9c888abe94a67255f15c50895460d4203409df6f3e708553f6b77a2c098f674d66e12289b40cb83d7c2b19c2017357e6be671a9a21baaf52cb472d0ee

memory/2308-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/392-6-0x0000000000400000-0x0000000000403000-memory.dmp