Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-1kp2latycz
Target 326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5
SHA256 326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5
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

326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5

Threat Level: Known bad

The file 326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5 was found to be: Known bad.

Malicious Activity Summary

blihanstealer discovery persistence stealer trojan

BlihanStealer

Blihanstealer family

Executes dropped EXE

Deletes itself

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 21:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 21:42

Reported

2025-02-26 21:45

Platform

win7-20241023-en

Max time kernel

149s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe

"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2612-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 88479b2fdb2826879552845e84391d26
SHA1 fb61f5c71f7ab5cca43540b94b9d7bb76bf3e8c9
SHA256 02df9493853b9da0d594f858d8b9d89e7bdd8746adf9d2cf9dbe91d2a26a0bdf
SHA512 84a53c51b07419a885dd558f58e43cff8150951cdc306d4b71af01f14772e48d906e12f4a3a5dbccbd88a84675c1f39ca4798a868a962365cabacf056f3f65d3

memory/2352-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2612-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2352-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 21:42

Reported

2025-02-26 21:45

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe

"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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 150.171.27.10:443 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 udp
N/A 20.189.173.15:443 tcp
US 8.8.8.8:53 udp
GB 104.78.173.167:80 tcp

Files

memory/4704-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 88479b2fdb2826879552845e84391d26
SHA1 fb61f5c71f7ab5cca43540b94b9d7bb76bf3e8c9
SHA256 02df9493853b9da0d594f858d8b9d89e7bdd8746adf9d2cf9dbe91d2a26a0bdf
SHA512 84a53c51b07419a885dd558f58e43cff8150951cdc306d4b71af01f14772e48d906e12f4a3a5dbccbd88a84675c1f39ca4798a868a962365cabacf056f3f65d3

memory/4704-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1996-7-0x0000000000400000-0x000000000040E000-memory.dmp