Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-yrj3ta1vbt
Target 1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07
SHA256 1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07
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

1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07

Threat Level: Known bad

The file 1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07 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

2025-02-26 20:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 20:01

Reported

2025-02-26 20:03

Platform

win7-20241010-en

Max time kernel

149s

Max time network

20s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe

"C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2124-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 cd1eefb2a6547427c5eaa029372491b6
SHA1 b7e73144e8a8c7d8acc2cc35c501d2f0bb81f10f
SHA256 f9949e8d80ce3e6a6254ec4ca192d1eb219d886bd10f4592e8836c2f9f2251aa
SHA512 117da656f96ee06e3855c17c8dfc2c38f0748f4acda87863b6776e27c909005d19ef058c21c9189366f8bafd3fae6876a963c794fe5c785b67e186076142ade0

memory/2124-8-0x0000000000220000-0x000000000022E000-memory.dmp

memory/2124-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/3012-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 20:01

Reported

2025-02-26 20:03

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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-1-5-21-1161330783-2912525651-1278508834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.exe

"C:\Users\Admin\AppData\Local\Temp\1198cd62c92232d85ed4eacb10180d83b2b36b713ad2f7cb45d264436995aa07.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/4072-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 cd1eefb2a6547427c5eaa029372491b6
SHA1 b7e73144e8a8c7d8acc2cc35c501d2f0bb81f10f
SHA256 f9949e8d80ce3e6a6254ec4ca192d1eb219d886bd10f4592e8836c2f9f2251aa
SHA512 117da656f96ee06e3855c17c8dfc2c38f0748f4acda87863b6776e27c909005d19ef058c21c9189366f8bafd3fae6876a963c794fe5c785b67e186076142ade0

memory/4072-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2144-7-0x0000000000400000-0x000000000040E000-memory.dmp