Malware Analysis Report

2025-05-28 18:23

Sample ID 241109-y48lyazrhv
Target 1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3
SHA256 1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3
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

1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3

Threat Level: Shows suspicious behavior

The file 1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3 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

2024-11-09 20:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 20:21

Reported

2024-11-09 20:24

Platform

win7-20240903-en

Max time kernel

149s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.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\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe

"C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2756-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 d85cb77ae766a7c7e7506fb81da3dc40
SHA1 74685be2a9431ad9c951fc0fbbf70fa35fc6f485
SHA256 cf28d9cfae7da3305c1d01419aea54224dfb7e578ecc56b1c49a33436391032a
SHA512 31d19a41efa45935b267d4f2459e4b1497a7483e3fb3267cb72b5e558dbd9a8a6d20588e240f75d587f7166414025da0de49210c19f137fb029726ea988f8d6f

memory/2756-7-0x00000000001B0000-0x00000000001BE000-memory.dmp

memory/2720-10-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 20:21

Reported

2024-11-09 20:24

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.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\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.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\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe

"C:\Users\Admin\AppData\Local\Temp\1ecdb27c6902e23d4ef5be1a46c3bd76e3e9771116b6e01e38a5232399d218a3.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 70.208.201.84.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 11.179.89.13.in-addr.arpa udp

Files

memory/3976-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 d85cb77ae766a7c7e7506fb81da3dc40
SHA1 74685be2a9431ad9c951fc0fbbf70fa35fc6f485
SHA256 cf28d9cfae7da3305c1d01419aea54224dfb7e578ecc56b1c49a33436391032a
SHA512 31d19a41efa45935b267d4f2459e4b1497a7483e3fb3267cb72b5e558dbd9a8a6d20588e240f75d587f7166414025da0de49210c19f137fb029726ea988f8d6f

memory/3976-4-0x0000000000400000-0x000000000040E000-memory.dmp

memory/648-6-0x0000000000400000-0x000000000040E000-memory.dmp