Analysis Overview
SHA256
917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc
Threat Level: Known bad
The file 917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc 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
2025-02-27 02:17
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 02:17
Reported
2025-02-27 02:20
Platform
win7-20250207-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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.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\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2748 wrote to memory of 2840 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
| PID 2748 wrote to memory of 2840 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
| PID 2748 wrote to memory of 2840 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
| PID 2748 wrote to memory of 2840 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe
"C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2748-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2748-3-0x00000000001B0000-0x00000000001BE000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0101df50ee03a7b1fef8c18e6e3ab0e6 |
| SHA1 | e0d6431566193b95adb323fd655dd8ba6717d287 |
| SHA256 | a92b21c0fb87ccb3bbe09df082f383705b90f16189b4448e502571b991201faa |
| SHA512 | 8887d5efe0fa38a718825a3a16f6bf2d59ca09609319a09cfffa528d929d1d9d156abe64ad27e6500433e9bed048b42d65241f9e1f88e49f49f7395ca9e707d4 |
memory/2840-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2840-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 02:17
Reported
2025-02-27 02:20
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
157s
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-1-5-21-2278412438-3475196406-3686434223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.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\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.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 2300 wrote to memory of 2044 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
| PID 2300 wrote to memory of 2044 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
| PID 2300 wrote to memory of 2044 | N/A | C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.exe
"C:\Users\Admin\AppData\Local\Temp\917f931b9d3581d80fbe96c0febb8c66b6e2b8ba4dfcc472ff5a5f85e122f0cc.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 | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| 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/2300-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2044-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2300-6-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0101df50ee03a7b1fef8c18e6e3ab0e6 |
| SHA1 | e0d6431566193b95adb323fd655dd8ba6717d287 |
| SHA256 | a92b21c0fb87ccb3bbe09df082f383705b90f16189b4448e502571b991201faa |
| SHA512 | 8887d5efe0fa38a718825a3a16f6bf2d59ca09609319a09cfffa528d929d1d9d156abe64ad27e6500433e9bed048b42d65241f9e1f88e49f49f7395ca9e707d4 |
memory/2044-8-0x0000000000400000-0x000000000040E000-memory.dmp