Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-2rg51awsgs
Target 4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c
SHA256 4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c
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

4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c

Threat Level: Known bad

The file 4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c 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

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-26 22:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 22:48

Reported

2025-02-26 22:51

Platform

win7-20241010-en

Max time kernel

149s

Max time network

18s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe

"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1628-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 af552c8acc742a9905b4e8ae0c991ed8
SHA1 6ea12c2e8dbe4e2fa3025360e9a7db32aa832360
SHA256 e71320a222786c9dee6dde9e3e80fe652ef516610062b13f18786f0cc190ef27
SHA512 9e635baa0ea3f165493df15ca917871be057190c6219563227235fa02e96cee512e4f35b7da073875baceba682ebbdd979da2117e4e3255e346b6fc4f7db11be

memory/1628-3-0x0000000000220000-0x000000000022E000-memory.dmp

memory/1628-10-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2224-11-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1628-8-0x0000000000220000-0x000000000022E000-memory.dmp

memory/2224-13-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 22:48

Reported

2025-02-26 22:51

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe

"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/1332-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 af552c8acc742a9905b4e8ae0c991ed8
SHA1 6ea12c2e8dbe4e2fa3025360e9a7db32aa832360
SHA256 e71320a222786c9dee6dde9e3e80fe652ef516610062b13f18786f0cc190ef27
SHA512 9e635baa0ea3f165493df15ca917871be057190c6219563227235fa02e96cee512e4f35b7da073875baceba682ebbdd979da2117e4e3255e346b6fc4f7db11be

memory/1332-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/3768-7-0x0000000000400000-0x000000000040E000-memory.dmp