Malware Analysis Report

2025-06-15 19:58

Sample ID 250226-zrp5hatlt2
Target 26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae
SHA256 26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae
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

26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae

Threat Level: Known bad

The file 26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae 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 20:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-26 20:57

Reported

2025-02-26 20:59

Platform

win7-20241010-en

Max time kernel

149s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe

"C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2288-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 9656fb6f2c69910b61e1274db2db6619
SHA1 b227cef73dbf2caf5be958d0babedbed36203bb7
SHA256 6dd80b80a4b64a7f702c7d8e5a3eb8288a18dc90f9701b97d4041ba0c4d7b23c
SHA512 233d3818e4291805890c798f33153d4227ef9a8f6040448eccda60bb3b540a54b533a25330c8cd44b0a7e48f90c14a0ab2d7453d84b00ed4b41aeca3a21e5c99

memory/2288-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2752-10-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-26 20:57

Reported

2025-02-26 20:59

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.exe

"C:\Users\Admin\AppData\Local\Temp\26a9e26286604b01a798573f56a9d50d693b9db54bd509c7963721ec120ebbae.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 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 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/2764-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 9656fb6f2c69910b61e1274db2db6619
SHA1 b227cef73dbf2caf5be958d0babedbed36203bb7
SHA256 6dd80b80a4b64a7f702c7d8e5a3eb8288a18dc90f9701b97d4041ba0c4d7b23c
SHA512 233d3818e4291805890c798f33153d4227ef9a8f6040448eccda60bb3b540a54b533a25330c8cd44b0a7e48f90c14a0ab2d7453d84b00ed4b41aeca3a21e5c99

memory/2764-4-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2332-6-0x0000000000400000-0x000000000040E000-memory.dmp