Analysis Overview
SHA256
c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d
Threat Level: Known bad
The file c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d 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 04:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 04:49
Reported
2025-02-27 04:51
Platform
win7-20240903-en
Max time kernel
149s
Max time network
122s
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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2420 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
| PID 2420 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
| PID 2420 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
| PID 2420 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe
"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2420-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | bdc5897f3786e9b203b5716b0f5d95d6 |
| SHA1 | 6cf7b0bc8812d25091d4d3708ce7c7f2ce11590f |
| SHA256 | 61acc8b0fdf1ea4a1bb5f30b2167f3dedf41e21a33e8b4ee31ca149403b7e51d |
| SHA512 | a037f4eef31b089cb834bc6dfcc83c8b8c3715e33d7c9208abfd6df14d146e822e63c5a7930d2c0a3d06e226c3f2e7fc193e47d5219dac704aaadfd33022d65e |
memory/2420-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1684-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1684-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 04:49
Reported
2025-02-27 04:51
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
139s
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-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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 972 wrote to memory of 2644 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
| PID 972 wrote to memory of 2644 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
| PID 972 wrote to memory of 2644 | N/A | C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.exe
"C:\Users\Admin\AppData\Local\Temp\c2d2300f333ff4213bfe6377a8c8d254075c7aec9d207be9379de3fc74800d5d.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 | 150.171.27.10:443 | 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 |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/972-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/972-5-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | bdc5897f3786e9b203b5716b0f5d95d6 |
| SHA1 | 6cf7b0bc8812d25091d4d3708ce7c7f2ce11590f |
| SHA256 | 61acc8b0fdf1ea4a1bb5f30b2167f3dedf41e21a33e8b4ee31ca149403b7e51d |
| SHA512 | a037f4eef31b089cb834bc6dfcc83c8b8c3715e33d7c9208abfd6df14d146e822e63c5a7930d2c0a3d06e226c3f2e7fc193e47d5219dac704aaadfd33022d65e |
memory/2644-7-0x0000000000400000-0x000000000040E000-memory.dmp