Malware Analysis Report

2025-06-15 19:58

Sample ID 250227-fn254sxns3
Target c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd
SHA256 c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd
Tags
blihanstealer discovery persistence stealer trojan
score
10/10

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
10/10

SHA256

c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd

Threat Level: Known bad

The file c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd was found to be: Known bad.

Malicious Activity Summary

blihanstealer discovery persistence stealer trojan

BlihanStealer

Blihanstealer family

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

2025-02-27 05:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 05:01

Reported

2025-02-27 05:04

Platform

win7-20240903-en

Max time kernel

149s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe"

Signatures

BlihanStealer

trojan stealer blihanstealer

Blihanstealer family

blihanstealer

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe

"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2940-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2940-3-0x0000000000220000-0x000000000022E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 c9200f5f49239e2ef10fd0d91742371f
SHA1 1d3136059c2b1768adfeff03197a6aff0377318e
SHA256 ec24a5858bb9ffb72d2332dfce69b783dac86db6474a4cccab1ac4b327fb43d2
SHA512 cfb355bb50f20895d452213ab9fbbc3ee2535bcb7f2eb79ff6dc95324eb58453daff1394dfcd47f8909dc029d80a92cf13166f14ea0c42ce8e95b97757bcef76

memory/2940-8-0x0000000000220000-0x000000000022E000-memory.dmp

memory/2576-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 05:01

Reported

2025-02-27 05:04

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe"

Signatures

BlihanStealer

trojan stealer blihanstealer

Blihanstealer family

blihanstealer

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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe

"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.28.10:443 g.bing.com tcp
US 150.171.28.10:443 g.bing.com tcp
US 150.171.28.10:443 g.bing.com tcp
US 150.171.28.10:443 g.bing.com tcp

Files

memory/2344-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 c9200f5f49239e2ef10fd0d91742371f
SHA1 1d3136059c2b1768adfeff03197a6aff0377318e
SHA256 ec24a5858bb9ffb72d2332dfce69b783dac86db6474a4cccab1ac4b327fb43d2
SHA512 cfb355bb50f20895d452213ab9fbbc3ee2535bcb7f2eb79ff6dc95324eb58453daff1394dfcd47f8909dc029d80a92cf13166f14ea0c42ce8e95b97757bcef76

memory/2344-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2000-7-0x0000000000400000-0x000000000040E000-memory.dmp