Malware Analysis Report

2025-08-05 11:27

Sample ID 241112-rf5f2sxmbj
Target 989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe
SHA256 989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68
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

989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68

Threat Level: Shows suspicious behavior

The file 989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Executes dropped EXE

Deletes itself

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

2024-11-12 14:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 14:09

Reported

2024-11-12 14:11

Platform

win7-20240903-en

Max time kernel

119s

Max time network

20s

Command Line

"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe

"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1924-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1924-6-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 418478bd815a8d9320ed0e692ad514f5
SHA1 520f370f3b00ccd7cd472b191c55b62c498af77c
SHA256 1fbf226e0075004d526b92a7ffe6ccf9e424754d6059bf47ed77d99eaacb9b47
SHA512 cc9a85ba0e44f58a4e6ddf5b0a28c179ffeeaf3102cf081c793850ee19adea9b91323de74bdaac5a60183e73fafaa04959436579ecef29d4f99e65e6bd67939b

memory/2544-8-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2544-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 14:09

Reported

2024-11-12 14:11

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.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\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe

"C:\Users\Admin\AppData\Local\Temp\989bc9570bcf490c4bbe5dfacf8e4762c694e06cd2ffd0d640af6544181e6e68N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/2064-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 418478bd815a8d9320ed0e692ad514f5
SHA1 520f370f3b00ccd7cd472b191c55b62c498af77c
SHA256 1fbf226e0075004d526b92a7ffe6ccf9e424754d6059bf47ed77d99eaacb9b47
SHA512 cc9a85ba0e44f58a4e6ddf5b0a28c179ffeeaf3102cf081c793850ee19adea9b91323de74bdaac5a60183e73fafaa04959436579ecef29d4f99e65e6bd67939b

memory/2064-5-0x0000000000400000-0x0000000000403000-memory.dmp

memory/3204-6-0x0000000000400000-0x0000000000403000-memory.dmp