Analysis Overview
SHA256
4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf
Threat Level: Known bad
The file 4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf 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
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2025-02-26 22:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-02-26 22:47
Reported
2025-02-26 22:50
Platform
win7-20240729-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.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\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2340 wrote to memory of 1820 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
| PID 2340 wrote to memory of 1820 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
| PID 2340 wrote to memory of 1820 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
| PID 2340 wrote to memory of 1820 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe
"C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
Files
memory/2340-0-0x0000000000400000-0x000000000040E000-memory.dmp
memory/2340-7-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | da7ebda3cce6558abcc1e4fe87a4846a |
| SHA1 | b519d35454e0cbc09d496902ec63145e0b52161f |
| SHA256 | ea6355401430a53b3360ba346365d7713a9e1a3d51acb5b4fbe8ba590c74fedf |
| SHA512 | 9c3cc6dd64c823fba4621e12ef359b8101fec185cefbd92e68c6a8d1f744842da6e60f4b1ac1d61f51c9ae136e9d533f2adbdd48fd62a980ef0f7d6736c7dc35 |
memory/1820-9-0x0000000000400000-0x000000000040E000-memory.dmp
memory/1820-11-0x0000000000400000-0x000000000040E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2025-02-26 22:47
Reported
2025-02-26 22:50
Platform
win10v2004-20250217-en
Max time kernel
149s
Max time network
150s
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\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.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\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.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 3076 wrote to memory of 3408 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
| PID 3076 wrote to memory of 3408 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
| PID 3076 wrote to memory of 3408 | N/A | C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.exe
"C:\Users\Admin\AppData\Local\Temp\4ce57ad148a242a072958391708d382f35d10c4245e8d8bdbb7f29dfe1f601bf.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 | 150.171.28.10:443 | 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/3076-0-0x0000000000400000-0x000000000040E000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | da7ebda3cce6558abcc1e4fe87a4846a |
| SHA1 | b519d35454e0cbc09d496902ec63145e0b52161f |
| SHA256 | ea6355401430a53b3360ba346365d7713a9e1a3d51acb5b4fbe8ba590c74fedf |
| SHA512 | 9c3cc6dd64c823fba4621e12ef359b8101fec185cefbd92e68c6a8d1f744842da6e60f4b1ac1d61f51c9ae136e9d533f2adbdd48fd62a980ef0f7d6736c7dc35 |
memory/3076-5-0x0000000000400000-0x000000000040E000-memory.dmp
memory/3408-7-0x0000000000400000-0x000000000040E000-memory.dmp