Analysis Overview
SHA256
d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619
Threat Level: Known bad
The file d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619 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
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-27 06:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 06:20
Reported
2025-02-27 06:23
Platform
win7-20240903-en
Max time kernel
149s
Max time network
119s
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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.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\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1992 wrote to memory of 332 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
| PID 1992 wrote to memory of 332 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
| PID 1992 wrote to memory of 332 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
| PID 1992 wrote to memory of 332 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe
"C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1992-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1992-7-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | e9ada38348a179de7c735ed7c3203004 |
| SHA1 | ed4c9f965646b15205b912f79a85d22257b31a55 |
| SHA256 | fe8254be303bae095bac2a1cfd940be9b579ecfcf3ae3a879aeeac86ae2ecf7c |
| SHA512 | d06efaaabeb48ea1c1c9777f76b7076ab7a13d9596399b48698481b9c3a1796288bd0712d0c7d5dd899e5ce27465075680e8fd6574fbd04be3ba1962d7849d9c |
memory/332-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/332-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 06:20
Reported
2025-02-27 06:23
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
150s
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\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.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:\Windows\microsofthelp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4008 wrote to memory of 1424 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
| PID 4008 wrote to memory of 1424 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
| PID 4008 wrote to memory of 1424 | N/A | C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.exe
"C:\Users\Admin\AppData\Local\Temp\d9316e28af4c5e2b53f3abc9205d11079eed8f0e59e4ce404fea96768f00a619.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 | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | 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 | 150.171.27.10:443 | g.bing.com | tcp |
Files
memory/4008-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | e9ada38348a179de7c735ed7c3203004 |
| SHA1 | ed4c9f965646b15205b912f79a85d22257b31a55 |
| SHA256 | fe8254be303bae095bac2a1cfd940be9b579ecfcf3ae3a879aeeac86ae2ecf7c |
| SHA512 | d06efaaabeb48ea1c1c9777f76b7076ab7a13d9596399b48698481b9c3a1796288bd0712d0c7d5dd899e5ce27465075680e8fd6574fbd04be3ba1962d7849d9c |
memory/4008-4-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1424-6-0x0000000000400000-0x000000000040E000-memory.dmp