Analysis Overview
SHA256
dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3
Threat Level: Known bad
The file dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3 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 06:24
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 06:24
Reported
2025-02-27 06:26
Platform
win7-20241023-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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.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\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1980 wrote to memory of 2600 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
| PID 1980 wrote to memory of 2600 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
| PID 1980 wrote to memory of 2600 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
| PID 1980 wrote to memory of 2600 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe
"C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1980-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 60caf90b4724b32ff16f7b3bdacae450 |
| SHA1 | 823bf453703779aa68f71b7e0f7378c76925839f |
| SHA256 | 6970419956bba3c5686eb91dda517548a92de217b00ca06e90f4eeb44b103298 |
| SHA512 | ff4126004a2b0dd1328b984f12133ad811f61c8f909cb04c4b15389247666f880d1104a685bdabc10d80eaf070412793a5b48785918913aeb50cc01ff00be2fc |
memory/1980-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2600-10-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 06:24
Reported
2025-02-27 06:26
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
137s
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-1-5-21-1161330783-2912525651-1278508834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.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\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.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 3036 wrote to memory of 4664 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
| PID 3036 wrote to memory of 4664 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
| PID 3036 wrote to memory of 4664 | N/A | C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.exe
"C:\Users\Admin\AppData\Local\Temp\dd5e5ff861d99c02aa01beba7ec09da0bf938ce9244bfd94c0239639d99971e3.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 | 150.171.27.10:443 | 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/3036-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 60caf90b4724b32ff16f7b3bdacae450 |
| SHA1 | 823bf453703779aa68f71b7e0f7378c76925839f |
| SHA256 | 6970419956bba3c5686eb91dda517548a92de217b00ca06e90f4eeb44b103298 |
| SHA512 | ff4126004a2b0dd1328b984f12133ad811f61c8f909cb04c4b15389247666f880d1104a685bdabc10d80eaf070412793a5b48785918913aeb50cc01ff00be2fc |
memory/3036-4-0x0000000000400000-0x000000000040E000-memory.dmp
memory/4664-6-0x0000000000400000-0x000000000040E000-memory.dmp