Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-3xtawsxvgt
Target 6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19
SHA256 6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19
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

6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19

Threat Level: Known bad

The file 6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19 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 23:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 23:53

Reported

2025-02-26 23:56

Platform

win7-20250207-en

Max time kernel

149s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe

"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/936-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/936-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2472-9-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 bf6b877a90702a564daec029edd00df9
SHA1 cba6791b9d81debeb4dac884cd137e2301c30f66
SHA256 ac6606b04971d27257619bac74070fda3240d144814a969489102d4e845cc042
SHA512 25ac3054023bb4b071bf926b371af8ac8829615856640bda4a0b139053d7b0bfb5374ee3df2278a716b3b80499bbfa94bfbd3d70180372f55328fdb04ae7560e

memory/2472-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 23:53

Reported

2025-02-26 23:56

Platform

win10v2004-20250217-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe

"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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 150.171.28.10:443 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
US 8.8.8.8:53 www.microsoft.com udp
NL 23.200.189.225:80 www.microsoft.com tcp
US 8.8.8.8:53 udp

Files

memory/3144-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 bf6b877a90702a564daec029edd00df9
SHA1 cba6791b9d81debeb4dac884cd137e2301c30f66
SHA256 ac6606b04971d27257619bac74070fda3240d144814a969489102d4e845cc042
SHA512 25ac3054023bb4b071bf926b371af8ac8829615856640bda4a0b139053d7b0bfb5374ee3df2278a716b3b80499bbfa94bfbd3d70180372f55328fdb04ae7560e

memory/1612-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/3144-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1612-8-0x0000000000400000-0x000000000040E000-memory.dmp