Analysis Overview
SHA256
6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19
Threat Level: Known bad
The file 6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19 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
2025-02-26 23:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 23:53
Reported
2025-02-26 23:56
Platform
win7-20250207-en
Max time kernel
149s
Max time network
120s
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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 936 wrote to memory of 2472 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
| PID 936 wrote to memory of 2472 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
| PID 936 wrote to memory of 2472 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
| PID 936 wrote to memory of 2472 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe
"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/936-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/936-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2472-9-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | bf6b877a90702a564daec029edd00df9 |
| SHA1 | cba6791b9d81debeb4dac884cd137e2301c30f66 |
| SHA256 | ac6606b04971d27257619bac74070fda3240d144814a969489102d4e845cc042 |
| SHA512 | 25ac3054023bb4b071bf926b371af8ac8829615856640bda4a0b139053d7b0bfb5374ee3df2278a716b3b80499bbfa94bfbd3d70180372f55328fdb04ae7560e |
memory/2472-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 23:53
Reported
2025-02-26 23:56
Platform
win10v2004-20250217-en
Max time kernel
150s
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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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 3144 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
| PID 3144 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
| PID 3144 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.exe
"C:\Users\Admin\AppData\Local\Temp\6272478003ba5f03012c756ed2b0e077b6ca812c06ecf269d04ed85d64afed19.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 | 150.171.28.10:443 | g.bing.com | 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 |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| NL | 23.200.189.225:80 | www.microsoft.com | tcp |
| US | 8.8.8.8:53 | udp |
Files
memory/3144-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | bf6b877a90702a564daec029edd00df9 |
| SHA1 | cba6791b9d81debeb4dac884cd137e2301c30f66 |
| SHA256 | ac6606b04971d27257619bac74070fda3240d144814a969489102d4e845cc042 |
| SHA512 | 25ac3054023bb4b071bf926b371af8ac8829615856640bda4a0b139053d7b0bfb5374ee3df2278a716b3b80499bbfa94bfbd3d70180372f55328fdb04ae7560e |
memory/1612-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3144-6-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1612-8-0x0000000000400000-0x000000000040E000-memory.dmp