Analysis Overview
SHA256
d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166
Threat Level: Known bad
The file d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166 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
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-27 06:08
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-27 06:08
Reported
2025-02-27 06:11
Platform
win7-20250207-en
Max time kernel
149s
Max time network
120s
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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.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\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1952 wrote to memory of 2100 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
| PID 1952 wrote to memory of 2100 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
| PID 1952 wrote to memory of 2100 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
| PID 1952 wrote to memory of 2100 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe
"C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/1952-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 18d238960726541091249b6a2248f038 |
| SHA1 | 3060a697adebc019aa6ccc51b3ca6da9d0b41e2b |
| SHA256 | aafbf3705ce706925f899f1e57446d8fcea3560b1d6df7ad84da67471c8f43e2 |
| SHA512 | 67c3e3da594eba5f6a61fd4db1e5dd3066cc316277f550e1019d128dde4c4b5f7dfdc04a31c2e0f0e4404d21866c9c2f8c157aff439c8570cbe698bf39efa235 |
memory/1952-7-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2100-10-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-27 06:08
Reported
2025-02-27 06:11
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
138s
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\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.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\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.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 968 wrote to memory of 2776 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
| PID 968 wrote to memory of 2776 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
| PID 968 wrote to memory of 2776 | N/A | C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.exe
"C:\Users\Admin\AppData\Local\Temp\d95f709f125b664e053458472ea81722f8ffacfa36a696f2a864bc1ec3b06166.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 | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| GB | 2.18.66.64:443 | 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/968-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 18d238960726541091249b6a2248f038 |
| SHA1 | 3060a697adebc019aa6ccc51b3ca6da9d0b41e2b |
| SHA256 | aafbf3705ce706925f899f1e57446d8fcea3560b1d6df7ad84da67471c8f43e2 |
| SHA512 | 67c3e3da594eba5f6a61fd4db1e5dd3066cc316277f550e1019d128dde4c4b5f7dfdc04a31c2e0f0e4404d21866c9c2f8c157aff439c8570cbe698bf39efa235 |
memory/968-4-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2776-6-0x0000000000400000-0x000000000040E000-memory.dmp