Analysis Overview
SHA256
c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd
Threat Level: Known bad
The file c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd 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
2025-02-27 05:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 05:01
Reported
2025-02-27 05:04
Platform
win7-20240903-en
Max time kernel
149s
Max time network
118s
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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2940 wrote to memory of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
| PID 2940 wrote to memory of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
| PID 2940 wrote to memory of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
| PID 2940 wrote to memory of 2576 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe
"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2940-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2940-3-0x0000000000220000-0x000000000022E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | c9200f5f49239e2ef10fd0d91742371f |
| SHA1 | 1d3136059c2b1768adfeff03197a6aff0377318e |
| SHA256 | ec24a5858bb9ffb72d2332dfce69b783dac86db6474a4cccab1ac4b327fb43d2 |
| SHA512 | cfb355bb50f20895d452213ab9fbbc3ee2535bcb7f2eb79ff6dc95324eb58453daff1394dfcd47f8909dc029d80a92cf13166f14ea0c42ce8e95b97757bcef76 |
memory/2940-8-0x0000000000220000-0x000000000022E000-memory.dmp
memory/2576-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 05:01
Reported
2025-02-27 05:04
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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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 2344 wrote to memory of 2000 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
| PID 2344 wrote to memory of 2000 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
| PID 2344 wrote to memory of 2000 | N/A | C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.exe
"C:\Users\Admin\AppData\Local\Temp\c6e5eefdecaf1b1b2586bf6adcdb7a023d0178506bbcfe285ce37ef0e839d4cd.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 | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
Files
memory/2344-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | c9200f5f49239e2ef10fd0d91742371f |
| SHA1 | 1d3136059c2b1768adfeff03197a6aff0377318e |
| SHA256 | ec24a5858bb9ffb72d2332dfce69b783dac86db6474a4cccab1ac4b327fb43d2 |
| SHA512 | cfb355bb50f20895d452213ab9fbbc3ee2535bcb7f2eb79ff6dc95324eb58453daff1394dfcd47f8909dc029d80a92cf13166f14ea0c42ce8e95b97757bcef76 |
memory/2344-5-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2000-7-0x0000000000400000-0x000000000040E000-memory.dmp