Analysis Overview
SHA256
4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c
Threat Level: Known bad
The file 4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c was found to be: Known bad.
Malicious Activity Summary
BlihanStealer
Blihanstealer family
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
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-26 22:48
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 22:48
Reported
2025-02-26 22:51
Platform
win7-20241010-en
Max time kernel
149s
Max time network
18s
Command Line
Signatures
BlihanStealer
Blihanstealer family
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
| 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\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1628 wrote to memory of 2224 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
| PID 1628 wrote to memory of 2224 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
| PID 1628 wrote to memory of 2224 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
| PID 1628 wrote to memory of 2224 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe
"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1628-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | af552c8acc742a9905b4e8ae0c991ed8 |
| SHA1 | 6ea12c2e8dbe4e2fa3025360e9a7db32aa832360 |
| SHA256 | e71320a222786c9dee6dde9e3e80fe652ef516610062b13f18786f0cc190ef27 |
| SHA512 | 9e635baa0ea3f165493df15ca917871be057190c6219563227235fa02e96cee512e4f35b7da073875baceba682ebbdd979da2117e4e3255e346b6fc4f7db11be |
memory/1628-3-0x0000000000220000-0x000000000022E000-memory.dmp
memory/1628-10-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2224-11-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1628-8-0x0000000000220000-0x000000000022E000-memory.dmp
memory/2224-13-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 22:48
Reported
2025-02-26 22:51
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
146s
Command Line
Signatures
BlihanStealer
Blihanstealer family
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
| 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\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1332 wrote to memory of 3768 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
| PID 1332 wrote to memory of 3768 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
| PID 1332 wrote to memory of 3768 | N/A | C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.exe
"C:\Users\Admin\AppData\Local\Temp\4d44d3bd207c6453e5800c9a81b871fdaf1d9134a6844208beb0e5691a72ea2c.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 | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/1332-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | af552c8acc742a9905b4e8ae0c991ed8 |
| SHA1 | 6ea12c2e8dbe4e2fa3025360e9a7db32aa832360 |
| SHA256 | e71320a222786c9dee6dde9e3e80fe652ef516610062b13f18786f0cc190ef27 |
| SHA512 | 9e635baa0ea3f165493df15ca917871be057190c6219563227235fa02e96cee512e4f35b7da073875baceba682ebbdd979da2117e4e3255e346b6fc4f7db11be |
memory/1332-5-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3768-7-0x0000000000400000-0x000000000040E000-memory.dmp