Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-y9vl9s11fz
Target 1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e
SHA256 1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e
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

1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e

Threat Level: Known bad

The file 1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e 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 20:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 20:29

Reported

2025-02-26 20:32

Platform

win7-20240903-en

Max time kernel

149s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.exe

"C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2460-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2460-8-0x0000000000220000-0x000000000022E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a059b05b82d736bdfa10d4ab7311152b
SHA1 85eb5cb44dc9de713d335a0939550bb741246fa6
SHA256 1b2e54b0a1b611f1d72de5ee2feaaa63aeab48f3046d8f573cc1407300babf35
SHA512 f17024805dfa9fd7ab855ec753a7f59d75ec06723fb8ecd4286cf52802a146e68ebc3d9e1a6eebdb7b463544baed1b4c5d06d65be7338bda9b14d37733e24ed4

memory/2460-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1288-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 20:29

Reported

2025-02-26 20:32

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.exe

"C:\Users\Admin\AppData\Local\Temp\1b48897d2c2666441d7a9bc569ef1220e5821beb0668e4f559fe2082b1c36c5e.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 150.171.27.10:443 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

Files

memory/4688-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a059b05b82d736bdfa10d4ab7311152b
SHA1 85eb5cb44dc9de713d335a0939550bb741246fa6
SHA256 1b2e54b0a1b611f1d72de5ee2feaaa63aeab48f3046d8f573cc1407300babf35
SHA512 f17024805dfa9fd7ab855ec753a7f59d75ec06723fb8ecd4286cf52802a146e68ebc3d9e1a6eebdb7b463544baed1b4c5d06d65be7338bda9b14d37733e24ed4

memory/1108-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4688-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1108-8-0x0000000000400000-0x000000000040E000-memory.dmp