Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-xxyygszny9
Target 0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7
SHA256 0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7

Threat Level: Known bad

The file 0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7 was found to be: Known bad.

Malicious Activity Summary

blihanstealer discovery persistence stealer trojan

BlihanStealer

Blihanstealer family

Executes dropped EXE

Deletes itself

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 19:14

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 19:14

Reported

2025-02-26 19:17

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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-1-5-21-1294999112-580688058-1763548717-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe

"C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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
GB 2.18.66.64:443 www.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

Files

memory/4444-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 1a93dc47ec40eb51478071b01b600637
SHA1 beb6350591732a7658a538508f28fe737a8003fd
SHA256 f2298556d4ae0150e7258cffee5a731769a4b35a069beed668ae7f07474520f2
SHA512 e51263914e298e8fad0cafff3f5414ecbb373438aae633bef48d8738821119acae5de79a85a0c19e0935c30be42a747aed6953faf1582335378c833780d9bcd0

memory/4444-4-0x0000000000400000-0x000000000040E000-memory.dmp

memory/3416-6-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 19:14

Reported

2025-02-26 19:17

Platform

win7-20240903-en

Max time kernel

149s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.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\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe

"C:\Users\Admin\AppData\Local\Temp\0134f92d338561958877d48fa9497edf47f33b94392cf0b70bc682460f762fa7.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2340-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2340-9-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 1a93dc47ec40eb51478071b01b600637
SHA1 beb6350591732a7658a538508f28fe737a8003fd
SHA256 f2298556d4ae0150e7258cffee5a731769a4b35a069beed668ae7f07474520f2
SHA512 e51263914e298e8fad0cafff3f5414ecbb373438aae633bef48d8738821119acae5de79a85a0c19e0935c30be42a747aed6953faf1582335378c833780d9bcd0

memory/2340-7-0x0000000000220000-0x000000000022E000-memory.dmp

memory/536-11-0x0000000000400000-0x000000000040E000-memory.dmp