Malware Analysis Report

2025-06-15 19:58

Sample ID 250227-gjjnmsxwdx
Target d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d
SHA256 d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d
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

d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d

Threat Level: Known bad

The file d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d 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 05:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 05:49

Reported

2025-02-27 05:52

Platform

win7-20240903-en

Max time kernel

149s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe

"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2696-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 d9edeb929b252b187faa8d7209975851
SHA1 b8f3c23d9c464e08621c4f44189cdae8816d929a
SHA256 a7363079e4abfa6e9daeb83254e7225826e89f800cb5af24fb4d6e569b265223
SHA512 4af0fd97c337a479815cf04f1f3e3839cd1d3fac6488f3178ea0789e01937428af5fbb0b58c2e9805b6b876ab801822fa0d82ba3bfd3aa375e10ed494206bc4b

memory/2844-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2696-8-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2844-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 05:49

Reported

2025-02-27 05:52

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe

"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 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
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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/3508-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 d9edeb929b252b187faa8d7209975851
SHA1 b8f3c23d9c464e08621c4f44189cdae8816d929a
SHA256 a7363079e4abfa6e9daeb83254e7225826e89f800cb5af24fb4d6e569b265223
SHA512 4af0fd97c337a479815cf04f1f3e3839cd1d3fac6488f3178ea0789e01937428af5fbb0b58c2e9805b6b876ab801822fa0d82ba3bfd3aa375e10ed494206bc4b

memory/3508-4-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1496-6-0x0000000000400000-0x000000000040E000-memory.dmp