Analysis Overview
SHA256
8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e
Threat Level: Shows suspicious behavior
The file 8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Adds Run key to start application
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-07 23:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-07 23:07
Reported
2024-04-07 23:09
Platform
win7-20240220-en
Max time kernel
140s
Max time network
124s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Build\Isass.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\KO_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Loads dropped DLL
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Microsoft Build\Isass.exe | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Build\Isass.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
"C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe"
C:\Program Files (x86)\Microsoft Build\Isass.exe
"C:\Program Files (x86)\Microsoft Build\Isass.exe"
C:\Users\Admin\AppData\Local\Temp\KO_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
"C:\Users\Admin\AppData\Local\Temp\KO_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe"
Network
Files
\Program Files (x86)\Microsoft Build\Isass.exe
| MD5 | 99e6bfa087bb649f7f4183a153844cc5 |
| SHA1 | b289b342d800b7649c5becc07a0b24b1a8d7218d |
| SHA256 | d0f17aec8a8d2cd29d7e5e7e19d7fc53ac8e0a67b00ea7600b7d74b321fa6225 |
| SHA512 | a315bfe0cb3bf080c503d9aa09ea0f73d98980c5154a52cc89cfd5813151e949a58dde8c53e05d3caf9f8a28ff3e3784e3ba535740b0ac7ffc15df35c61204b1 |
memory/2868-10-0x0000000000400000-0x00000000016A7000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\KO_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
| MD5 | a32a382b8a5a906e03a83b4f3e5b7a9b |
| SHA1 | 11e2bdd0798761f93cce363329996af6c17ed796 |
| SHA256 | 75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346 |
| SHA512 | ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c |
memory/2868-20-0x00000000041D0000-0x0000000005477000-memory.dmp
memory/2868-18-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2868-21-0x00000000041D0000-0x0000000005477000-memory.dmp
memory/2924-22-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-23-0x0000000000320000-0x0000000000321000-memory.dmp
memory/2924-24-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-25-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-26-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-27-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-28-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-29-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-32-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-33-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-34-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-35-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-39-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-40-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-41-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-42-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/2924-43-0x0000000000400000-0x00000000016A7000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-07 23:07
Reported
2024-04-07 23:09
Platform
win10v2004-20240226-en
Max time kernel
141s
Max time network
128s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Build\Isass.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\VU_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe" | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Microsoft Build\Isass.exe | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Build\Isass.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Build\Isass.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
"C:\Users\Admin\AppData\Local\Temp\8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe"
C:\Program Files (x86)\Microsoft Build\Isass.exe
"C:\Program Files (x86)\Microsoft Build\Isass.exe"
C:\Users\Admin\AppData\Local\Temp\VU_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
"C:\Users\Admin\AppData\Local\Temp\VU_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 130.118.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
Files
memory/4824-0-0x0000000000400000-0x00000000016A7000-memory.dmp
C:\Program Files (x86)\Microsoft Build\Isass.exe
| MD5 | 99e6bfa087bb649f7f4183a153844cc5 |
| SHA1 | b289b342d800b7649c5becc07a0b24b1a8d7218d |
| SHA256 | d0f17aec8a8d2cd29d7e5e7e19d7fc53ac8e0a67b00ea7600b7d74b321fa6225 |
| SHA512 | a315bfe0cb3bf080c503d9aa09ea0f73d98980c5154a52cc89cfd5813151e949a58dde8c53e05d3caf9f8a28ff3e3784e3ba535740b0ac7ffc15df35c61204b1 |
memory/3816-6-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/4824-7-0x0000000003450000-0x0000000003451000-memory.dmp
memory/3816-8-0x0000000003210000-0x0000000003211000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\VU_8a08193970d447bfd1894199bfda157a362644b25b3ef98e8c4f9a4df92b2a0e.exe
| MD5 | a32a382b8a5a906e03a83b4f3e5b7a9b |
| SHA1 | 11e2bdd0798761f93cce363329996af6c17ed796 |
| SHA256 | 75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346 |
| SHA512 | ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c |
memory/4824-15-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-17-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-18-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-19-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-20-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-21-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-22-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-23-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-24-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-25-0x0000000000400000-0x00000000016A7000-memory.dmp
C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\setup.exe
| MD5 | b395055fd7454a5f73c02232bc3c592e |
| SHA1 | 82a066b4a859297f4e3c2fff169d26f898f16f7f |
| SHA256 | a06deb32419a1620d471481dd59eace9424766cb7dfacfb2ef483c309a3c6e2d |
| SHA512 | 2f0809a3258484cbdc3927e5161dc1328c83d9546df032862fecae4e0200d6a7ff830290b0533520a333d6abad98261f706dadc35bf88c438825893a832c0c7c |
memory/3816-32-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-33-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-34-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-35-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-36-0x0000000000400000-0x00000000016A7000-memory.dmp
memory/3816-37-0x0000000000400000-0x00000000016A7000-memory.dmp