Analysis Overview
SHA256
cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772
Threat Level: Known bad
The file cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772 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
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 05:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 05:17
Reported
2025-02-27 05:19
Platform
win7-20240903-en
Max time kernel
149s
Max time network
123s
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\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.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\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2628 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
| PID 2628 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
| PID 2628 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
| PID 2628 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe
"C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2628-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2628-3-0x0000000000220000-0x000000000022E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | c5e85fdbf9f464950f4348c7c234d26c |
| SHA1 | 3d5a546ae8b365f00450fc357b896f783104e5ce |
| SHA256 | 82f62b21e8c830c93831d1c0043ef36cf423dc8d109743b0d7ea14ba2448f9ec |
| SHA512 | e3e9acf73d88deecba0276688e73343e28415965e337087799e6fc93ec9e45bc30fda86b7ed36b51734693e549e13f5317a95eb4220b335189b63e9e334f6ae4 |
memory/2628-8-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2964-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 05:17
Reported
2025-02-27 05:19
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
140s
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\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.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\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.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\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.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 756 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
| PID 756 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
| PID 756 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe
"C:\Users\Admin\AppData\Local\Temp\cad5b299da8187a0f67d73489580447ef54da6993384d1789a15241be0f7f772.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 150.171.28.10:443 | tcp | |
| US | 150.171.28.10:443 | tcp | |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | 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 |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
Files
memory/756-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/756-6-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | c5e85fdbf9f464950f4348c7c234d26c |
| SHA1 | 3d5a546ae8b365f00450fc357b896f783104e5ce |
| SHA256 | 82f62b21e8c830c93831d1c0043ef36cf423dc8d109743b0d7ea14ba2448f9ec |
| SHA512 | e3e9acf73d88deecba0276688e73343e28415965e337087799e6fc93ec9e45bc30fda86b7ed36b51734693e549e13f5317a95eb4220b335189b63e9e334f6ae4 |
memory/4688-7-0x0000000000400000-0x000000000040E000-memory.dmp