Malware Analysis Report

2025-06-15 19:58

Sample ID 250227-dtq9patn17
Target a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31
SHA256 a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31
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

a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31

Threat Level: Known bad

The file a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31 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 03:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 03:18

Reported

2025-02-27 03:20

Platform

win7-20240903-en

Max time kernel

149s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.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\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe

"C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2696-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 aefecbdc540c7e0bf5dcead2ea8fedca
SHA1 0a26e0b719c26ae876825e51321182a24806cf71
SHA256 84bc10b95862e4629328431b24bab4afc88d408d61ed296f03045074eb1a33e6
SHA512 9c7c77004a0f32173b00934ed2ecd9ef25a304c02030e7855bdb232cfc17bc502b4370939f9e690c3d41f67727f91be9b1915bb7c42f94456dd7fa1118284cac

memory/2696-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2872-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2872-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 03:18

Reported

2025-02-27 03:20

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.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-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.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\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.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\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe

"C:\Users\Admin\AppData\Local\Temp\a513f92aa2a10462508203646892b917be8673033d778a98ea3d63dcf793cb31.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

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

Files

memory/2260-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 aefecbdc540c7e0bf5dcead2ea8fedca
SHA1 0a26e0b719c26ae876825e51321182a24806cf71
SHA256 84bc10b95862e4629328431b24bab4afc88d408d61ed296f03045074eb1a33e6
SHA512 9c7c77004a0f32173b00934ed2ecd9ef25a304c02030e7855bdb232cfc17bc502b4370939f9e690c3d41f67727f91be9b1915bb7c42f94456dd7fa1118284cac

memory/2260-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/3644-7-0x0000000000400000-0x000000000040E000-memory.dmp