Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-3trynaxthv
Target 5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95
SHA256 5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95
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

5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95

Threat Level: Known bad

The file 5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95 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 23:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 23:48

Reported

2025-02-26 23:51

Platform

win7-20241010-en

Max time kernel

149s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe

"C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1492-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 dee538b4b7bb54c57dbbde2279d3453c
SHA1 fcd1c75fd1ab87880c16ae2a3ceb461504a2da15
SHA256 936551fb68eac38bbbd2708440b0f43718fbfc672ec6ab67faaca15518cde118
SHA512 83906d8517ce6e4c97cd8ccd801287577ccd430b6f8eda28c0ef4e461079d6fd7ad16fe7bff0a8d05f4f58f7ffca7e4274790597a6e8f66689ae2ab4b2fdc762

memory/1492-8-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1492-3-0x0000000000220000-0x000000000022E000-memory.dmp

memory/2616-10-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2616-12-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 23:48

Reported

2025-02-26 23:51

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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-1-5-21-3181990009-820930284-137514597-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.exe

"C:\Users\Admin\AppData\Local\Temp\5cc49234d51df387b800e016cef07a70188f1c13bd8530083e2a566b40384c95.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 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/2276-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 dee538b4b7bb54c57dbbde2279d3453c
SHA1 fcd1c75fd1ab87880c16ae2a3ceb461504a2da15
SHA256 936551fb68eac38bbbd2708440b0f43718fbfc672ec6ab67faaca15518cde118
SHA512 83906d8517ce6e4c97cd8ccd801287577ccd430b6f8eda28c0ef4e461079d6fd7ad16fe7bff0a8d05f4f58f7ffca7e4274790597a6e8f66689ae2ab4b2fdc762

memory/2276-5-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2180-7-0x0000000000400000-0x000000000040E000-memory.dmp