Analysis Overview
SHA256
326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5
Threat Level: Known bad
The file 326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5 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 21:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 21:33
Reported
2025-02-26 21:36
Platform
win7-20240729-en
Max time kernel
149s
Max time network
16s
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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 908 wrote to memory of 940 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
| PID 908 wrote to memory of 940 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
| PID 908 wrote to memory of 940 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
| PID 908 wrote to memory of 940 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe
"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/908-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 88479b2fdb2826879552845e84391d26 |
| SHA1 | fb61f5c71f7ab5cca43540b94b9d7bb76bf3e8c9 |
| SHA256 | 02df9493853b9da0d594f858d8b9d89e7bdd8746adf9d2cf9dbe91d2a26a0bdf |
| SHA512 | 84a53c51b07419a885dd558f58e43cff8150951cdc306d4b71af01f14772e48d906e12f4a3a5dbccbd88a84675c1f39ca4798a868a962365cabacf056f3f65d3 |
memory/908-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/940-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/940-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 21:33
Reported
2025-02-26 21:36
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-1-5-21-1294999112-580688058-1763548717-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.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\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\microsofthelp.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 468 wrote to memory of 3448 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
| PID 468 wrote to memory of 3448 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
| PID 468 wrote to memory of 3448 | N/A | C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe
"C:\Users\Admin\AppData\Local\Temp\326292c3dd4b33b6c13140a4640318d172842beb16ec38575d5780312e0160c5.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| GB | 92.123.128.188:443 | www.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/468-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 88479b2fdb2826879552845e84391d26 |
| SHA1 | fb61f5c71f7ab5cca43540b94b9d7bb76bf3e8c9 |
| SHA256 | 02df9493853b9da0d594f858d8b9d89e7bdd8746adf9d2cf9dbe91d2a26a0bdf |
| SHA512 | 84a53c51b07419a885dd558f58e43cff8150951cdc306d4b71af01f14772e48d906e12f4a3a5dbccbd88a84675c1f39ca4798a868a962365cabacf056f3f65d3 |
memory/468-5-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3448-7-0x0000000000400000-0x000000000040E000-memory.dmp