Analysis Overview
SHA256
d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d
Threat Level: Known bad
The file d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d was found to be: Known bad.
Malicious Activity Summary
Blihanstealer family
BlihanStealer
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
2025-02-27 05:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 05:49
Reported
2025-02-27 05:52
Platform
win7-20240903-en
Max time kernel
149s
Max time network
121s
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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2696 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
| PID 2696 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
| PID 2696 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
| PID 2696 wrote to memory of 2844 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe
"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2696-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | d9edeb929b252b187faa8d7209975851 |
| SHA1 | b8f3c23d9c464e08621c4f44189cdae8816d929a |
| SHA256 | a7363079e4abfa6e9daeb83254e7225826e89f800cb5af24fb4d6e569b265223 |
| SHA512 | 4af0fd97c337a479815cf04f1f3e3839cd1d3fac6488f3178ea0789e01937428af5fbb0b58c2e9805b6b876ab801822fa0d82ba3bfd3aa375e10ed494206bc4b |
memory/2844-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2696-8-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2844-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 05:49
Reported
2025-02-27 05:52
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
131s
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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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 3508 wrote to memory of 1496 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
| PID 3508 wrote to memory of 1496 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
| PID 3508 wrote to memory of 1496 | N/A | C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.exe
"C:\Users\Admin\AppData\Local\Temp\d3dd7d37aa32e6c012698d3be8fe2dc3fe9f47bf35df9e1ae000f5d50ca7ea7d.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 | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | 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 |
| 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 | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
Files
memory/3508-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | d9edeb929b252b187faa8d7209975851 |
| SHA1 | b8f3c23d9c464e08621c4f44189cdae8816d929a |
| SHA256 | a7363079e4abfa6e9daeb83254e7225826e89f800cb5af24fb4d6e569b265223 |
| SHA512 | 4af0fd97c337a479815cf04f1f3e3839cd1d3fac6488f3178ea0789e01937428af5fbb0b58c2e9805b6b876ab801822fa0d82ba3bfd3aa375e10ed494206bc4b |
memory/3508-4-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1496-6-0x0000000000400000-0x000000000040E000-memory.dmp