Analysis Overview
SHA256
1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3
Threat Level: Shows suspicious behavior
The file 1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
Loads dropped DLL
Deletes itself
Adds Run key to start application
Drops file in Windows directory
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 18:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 18:50
Reported
2024-04-07 18:53
Platform
win7-20240319-en
Max time kernel
149s
Max time network
154s
Command Line
Signatures
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-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1800 wrote to memory of 2292 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
| PID 1800 wrote to memory of 2292 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
| PID 1800 wrote to memory of 2292 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
| PID 1800 wrote to memory of 2292 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe
"C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
Files
memory/1800-0-0x0000000000400000-0x000000000040C000-memory.dmp
memory/1800-7-0x0000000000400000-0x000000000040C000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0d7d41ee42999851899c61c7f93c8470 |
| SHA1 | 09845f8746a5d12e7f04218edb90a84adbbdfd97 |
| SHA256 | 70f1572181eef4f9ef7690d67d6d79dfdf8882a6fbbbe4c11cedf7caa9716098 |
| SHA512 | 5b16b0dac13ad8db71d5aab17d3d77d997266390ea64c54b7a113896bdaad3939039a15fb616a19f12a80c54a0cd4c13edea17629b4b2a7c460d94c6bb587d04 |
memory/1800-3-0x0000000000020000-0x000000000002C000-memory.dmp
memory/2292-10-0x0000000000400000-0x000000000040C000-memory.dmp
memory/1800-8-0x0000000000020000-0x000000000002C000-memory.dmp
memory/2292-14-0x0000000010000000-0x0000000010005000-memory.dmp
memory/2292-15-0x0000000000400000-0x000000000040C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 18:50
Reported
2024-04-07 18:53
Platform
win10v2004-20240226-en
Max time kernel
153s
Max time network
157s
Command Line
Signatures
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 |
Loads dropped DLL
| 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-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\microsofthelp.exe | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | N/A |
| File created | C:\Windows\HidePlugin.dll | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\microsofthelp.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4596 wrote to memory of 3864 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
| PID 4596 wrote to memory of 3864 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
| PID 4596 wrote to memory of 3864 | N/A | C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe | C:\Windows\microsofthelp.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe
"C:\Users\Admin\AppData\Local\Temp\1499fbc10a44491543fc37491a747ba4d00e7919ee6599a7666bb0197ac0b6d3.exe"
C:\Windows\microsofthelp.exe
"C:\Windows\microsofthelp.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | 171.117.168.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
| US | 8.8.8.8:53 | www.cygdy.com | udp |
Files
memory/4596-0-0x0000000000400000-0x000000000040C000-memory.dmp
C:\Windows\microsofthelp.exe
| MD5 | 0d7d41ee42999851899c61c7f93c8470 |
| SHA1 | 09845f8746a5d12e7f04218edb90a84adbbdfd97 |
| SHA256 | 70f1572181eef4f9ef7690d67d6d79dfdf8882a6fbbbe4c11cedf7caa9716098 |
| SHA512 | 5b16b0dac13ad8db71d5aab17d3d77d997266390ea64c54b7a113896bdaad3939039a15fb616a19f12a80c54a0cd4c13edea17629b4b2a7c460d94c6bb587d04 |
memory/3864-6-0x0000000000400000-0x000000000040C000-memory.dmp
memory/4596-5-0x0000000000400000-0x000000000040C000-memory.dmp
C:\Windows\HidePlugin.dll
| MD5 | 4c0b9970f96300dfa1f45afc7539d35f |
| SHA1 | ebbb4ed2003662d78d1f32e7b6da1b6f504ae711 |
| SHA256 | 4e96660cc8be7171a79755a20860366987547322b3a809e78c9850f14c242262 |
| SHA512 | 579f8787b52bf62a0296d8a24753263201fbc84abec5927033e3c97576f965ead0f8422acd3f7af1345b0df0001b0cd68fa971062e21269f6940cf3e1508ca88 |
memory/3864-11-0x0000000010000000-0x0000000010005000-memory.dmp
memory/3864-12-0x0000000000400000-0x000000000040C000-memory.dmp