Malware Analysis Report

2025-06-15 19:58

Sample ID 250227-af5ndaxyes
Target 67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b
SHA256 67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b
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

67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b

Threat Level: Known bad

The file 67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b was found to be: Known bad.

Malicious Activity Summary

blihanstealer discovery persistence stealer trojan

Blihanstealer family

BlihanStealer

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

2025-02-27 00:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 00:10

Reported

2025-02-27 00:12

Platform

win7-20240903-en

Max time kernel

149s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe

"C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/796-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/796-7-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 250007b54b5e38b582f226d615067e78
SHA1 0da643f90277a481bd90c39db0453438e5aa2ab8
SHA256 76b70dea56f71e6135c3e2fae512739cb20dd13edc9bdcdfe0ec05b4fb05e50a
SHA512 dc7f9f95c348b15adec9db60878aa53ea8151536d1afa83748eaceda5b826ad6a040b43885d9920e0e139be7743d1840ae52ce9da43597c0dbed08c3d3709f98

memory/2004-10-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 00:10

Reported

2025-02-27 00:12

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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-1-5-21-2278412438-3475196406-3686434223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.exe

"C:\Users\Admin\AppData\Local\Temp\67dc9a8421c6171f182b6770c11ff140181caba58effbd61386e83330800218b.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 150.171.27.10:443 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/3392-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 250007b54b5e38b582f226d615067e78
SHA1 0da643f90277a481bd90c39db0453438e5aa2ab8
SHA256 76b70dea56f71e6135c3e2fae512739cb20dd13edc9bdcdfe0ec05b4fb05e50a
SHA512 dc7f9f95c348b15adec9db60878aa53ea8151536d1afa83748eaceda5b826ad6a040b43885d9920e0e139be7743d1840ae52ce9da43597c0dbed08c3d3709f98

memory/3392-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4416-7-0x0000000000400000-0x000000000040E000-memory.dmp