Analysis Overview
SHA256
18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72
Threat Level: Known bad
The file 18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72 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 20:20
Signatures
Blihanstealer family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 20:20
Reported
2025-02-26 20:23
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
141s
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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.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\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.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 1760 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
| PID 1760 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
| PID 1760 wrote to memory of 2792 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe
"C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.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 | 150.171.27.10:443 | 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/1760-0-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 1c4f970793de1acb708ffc838dcd9bfa |
| SHA1 | 554d399058dae0925f4ed665d0bf7706cf3cd68c |
| SHA256 | 927ce5b7518e2aff3bc981f70bd4f36c81581d210e49db6a25f1e81ff4ad531d |
| SHA512 | 7787a8cb2004daf2704a1c10f0d64301c1648a2e8aa30bc0693351a233ae8a9da6e826a9114c8394d11ee7cf9bf384bb001081074c252ecb70c3e71896c578b4 |
memory/1760-4-0x0000000000400000-0x000000000040F000-memory.dmp
memory/2792-6-0x0000000000400000-0x000000000040F000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 20:20
Reported
2025-02-26 20:23
Platform
win7-20240903-en
Max time kernel
149s
Max time network
122s
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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.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\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1372 wrote to memory of 1680 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
| PID 1372 wrote to memory of 1680 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
| PID 1372 wrote to memory of 1680 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
| PID 1372 wrote to memory of 1680 | N/A | C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe
"C:\Users\Admin\AppData\Local\Temp\18f145ad8f4134cde0d4856d18cbadec834a8d4ab25851f1661e7958c2526f72.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1372-0-0x0000000000400000-0x000000000040F000-memory.dmp
memory/1372-6-0x0000000000400000-0x000000000040F000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 1c4f970793de1acb708ffc838dcd9bfa |
| SHA1 | 554d399058dae0925f4ed665d0bf7706cf3cd68c |
| SHA256 | 927ce5b7518e2aff3bc981f70bd4f36c81581d210e49db6a25f1e81ff4ad531d |
| SHA512 | 7787a8cb2004daf2704a1c10f0d64301c1648a2e8aa30bc0693351a233ae8a9da6e826a9114c8394d11ee7cf9bf384bb001081074c252ecb70c3e71896c578b4 |
memory/1680-9-0x0000000000400000-0x000000000040F000-memory.dmp