Malware Analysis Report

2025-06-15 19:58

Sample ID 250227-ffrdmswsew
Target c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d
SHA256 c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d
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

c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d

Threat Level: Known bad

The file c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d 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

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-27 04:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 04:49

Reported

2025-02-27 04:51

Platform

win7-20240903-en

Max time kernel

149s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe

"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2420-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 bdc5897f3786e9b203b5716b0f5d95d6
SHA1 6cf7b0bc8812d25091d4d3708ce7c7f2ce11590f
SHA256 61acc8b0fdf1ea4a1bb5f30b2167f3dedf41e21a33e8b4ee31ca149403b7e51d
SHA512 a037f4eef31b089cb834bc6dfcc83c8b8c3715e33d7c9208abfd6df14d146e822e63c5a7930d2c0a3d06e226c3f2e7fc193e47d5219dac704aaadfd33022d65e

memory/2420-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1684-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1684-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 04:49

Reported

2025-02-27 04:51

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe

"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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 150.171.27.10:443 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/972-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/972-5-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 bdc5897f3786e9b203b5716b0f5d95d6
SHA1 6cf7b0bc8812d25091d4d3708ce7c7f2ce11590f
SHA256 61acc8b0fdf1ea4a1bb5f30b2167f3dedf41e21a33e8b4ee31ca149403b7e51d
SHA512 a037f4eef31b089cb834bc6dfcc83c8b8c3715e33d7c9208abfd6df14d146e822e63c5a7930d2c0a3d06e226c3f2e7fc193e47d5219dac704aaadfd33022d65e

memory/2644-7-0x0000000000400000-0x000000000040E000-memory.dmp