Analysis Overview
SHA256
190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630
Threat Level: Known bad
The file 190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630 was found to be: Known bad.
Malicious Activity Summary
BlihanStealer
Blihanstealer family
Executes dropped EXE
Deletes itself
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
2025-02-26 20:27
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 20:27
Reported
2025-02-26 20:29
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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.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\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3036 wrote to memory of 2488 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
| PID 3036 wrote to memory of 2488 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
| PID 3036 wrote to memory of 2488 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
| PID 3036 wrote to memory of 2488 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe
"C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/3036-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7243cd8d76f12745a9f733147be0d208 |
| SHA1 | 997e37a1c6c442256ad4d6e2fce402115f5a9cf7 |
| SHA256 | 1696a58b4086521d1b9f1104c6e7591f79458bb6816fa55e4bb47b389ebac1c0 |
| SHA512 | f9d15eb9adf8de18ff60215555f948cc2cce613a01ed2e8dd58397c9023121021f7a151ad6bcfd74e953fccbe07bb75bbb92d6dc81eb89ecd79a2371605bf4c4 |
memory/3036-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2488-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2488-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 20:27
Reported
2025-02-26 20:29
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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.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\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.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 3764 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
| PID 3764 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
| PID 3764 wrote to memory of 4688 | N/A | C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.exe
"C:\Users\Admin\AppData\Local\Temp\190a2e3947226ecf31204dbb57fb5103376e8e8dfcc52d04e8b36702f6fa9630.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 | 150.171.27.10:443 | 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 |
Files
memory/3764-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 7243cd8d76f12745a9f733147be0d208 |
| SHA1 | 997e37a1c6c442256ad4d6e2fce402115f5a9cf7 |
| SHA256 | 1696a58b4086521d1b9f1104c6e7591f79458bb6816fa55e4bb47b389ebac1c0 |
| SHA512 | f9d15eb9adf8de18ff60215555f948cc2cce613a01ed2e8dd58397c9023121021f7a151ad6bcfd74e953fccbe07bb75bbb92d6dc81eb89ecd79a2371605bf4c4 |
memory/3764-6-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4688-7-0x0000000000400000-0x000000000040E000-memory.dmp