Analysis Overview
SHA256
fcbe2ceaf680fc8f9b379dc41fc3d88887478965321551b385a40dd42c6dd4cc
Threat Level: Known bad
The file PDFextractor.exe was found to be: Known bad.
Malicious Activity Summary
Nanocore family
NanoCore
Adds Run key to start application
Checks whether UAC is enabled
Drops file in Program Files directory
Unsigned PE
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-27 12:46
Signatures
Nanocore family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-27 12:46
Reported
2024-01-27 12:49
Platform
win7-20231215-en
Max time kernel
118s
Max time network
152s
Command Line
Signatures
NanoCore
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\PCI Service = "C:\\Program Files (x86)\\PCI Service\\pcisvc.exe" | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\PCI Service\pcisvc.exe | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| File opened for modification | C:\Program Files (x86)\PCI Service\pcisvc.exe | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe
"C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5A60.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "PCI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5CC1.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | divert64.hopto.org | udp |
| CA | 142.67.130.172:54999 | divert64.hopto.org | tcp |
Files
memory/2192-0-0x00000000747F0000-0x0000000074D9B000-memory.dmp
memory/2192-2-0x0000000002220000-0x0000000002260000-memory.dmp
memory/2192-1-0x00000000747F0000-0x0000000074D9B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp5A60.tmp
| MD5 | 7f6c0b45ec5c38500de95eddd09ddac8 |
| SHA1 | a38c639dd5c13d7f128f8bbae211d5f9ff8bd2f4 |
| SHA256 | e90517f2caaba84a9999518915f3fd5771f3d38ce60de95bae0a095be652cc5c |
| SHA512 | aa93bbf8d3586f923cde1e29b37cec3793b5a40b15f8e2b1d5337e1e4182f3faa23dbb9b8fc01bde4a939826aea5ef8555094926b1de45a4a88f70f5086c188e |
C:\Users\Admin\AppData\Local\Temp\tmp5CC1.tmp
| MD5 | a4f6fa4537e2dcf0d3e2802c0f070a4d |
| SHA1 | 03545095bfeddd7656b5b8547ab84a810324a94f |
| SHA256 | 192ac26e1895b267149bde35c55327f4a441693495239da5899062924d45bd11 |
| SHA512 | a4293123d718b0511a8301a7f536e403cecf8bc89f25f9dc4692b293eb8a554a8eb67993a26fe0e96792b6eb3573b34e9b270777cafe95c2383268da6d40fd2e |
memory/2192-12-0x00000000747F0000-0x0000000074D9B000-memory.dmp
memory/2192-13-0x00000000747F0000-0x0000000074D9B000-memory.dmp
memory/2192-14-0x0000000002220000-0x0000000002260000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-27 12:46
Reported
2024-01-27 12:49
Platform
win10v2004-20231215-en
Max time kernel
143s
Max time network
153s
Command Line
Signatures
NanoCore
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAT Service = "C:\\Program Files (x86)\\NAT Service\\natsv.exe" | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\NAT Service\natsv.exe | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| File opened for modification | C:\Program Files (x86)\NAT Service\natsv.exe | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4072 wrote to memory of 4188 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4072 wrote to memory of 4188 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4072 wrote to memory of 4188 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4072 wrote to memory of 3564 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4072 wrote to memory of 3564 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4072 wrote to memory of 3564 | N/A | C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe | C:\Windows\SysWOW64\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe
"C:\Users\Admin\AppData\Local\Temp\PDFextractor.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5861.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp58C0.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | divert64.hopto.org | udp |
| CA | 142.67.130.172:54999 | divert64.hopto.org | tcp |
| US | 8.8.8.8:53 | 172.130.67.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 177.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.173.189.20.in-addr.arpa | udp |
Files
memory/4072-0-0x0000000075470000-0x0000000075A21000-memory.dmp
memory/4072-2-0x0000000075470000-0x0000000075A21000-memory.dmp
memory/4072-1-0x0000000000A80000-0x0000000000A90000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp5861.tmp
| MD5 | 7f6c0b45ec5c38500de95eddd09ddac8 |
| SHA1 | a38c639dd5c13d7f128f8bbae211d5f9ff8bd2f4 |
| SHA256 | e90517f2caaba84a9999518915f3fd5771f3d38ce60de95bae0a095be652cc5c |
| SHA512 | aa93bbf8d3586f923cde1e29b37cec3793b5a40b15f8e2b1d5337e1e4182f3faa23dbb9b8fc01bde4a939826aea5ef8555094926b1de45a4a88f70f5086c188e |
C:\Users\Admin\AppData\Local\Temp\tmp58C0.tmp
| MD5 | cd8e69b89899eb65a199cc8019e502ad |
| SHA1 | 19ae04c02d02e2828e4513de66734c383660d1a5 |
| SHA256 | cf1a9b78745b0f788fea2f579f1e3a82efc7425edb1f35abb8dd8e1cbaaf03ef |
| SHA512 | 9a2bf35fc687ec6ac81ad3fe16f82f104ad880be6b36afc7297264de09d50e85d9d3376ed9378d56b08ef94ca700b886cc40768587fc623c7fb6117265bd7033 |
memory/4072-10-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/4072-13-0x0000000075470000-0x0000000075A21000-memory.dmp
memory/4072-14-0x0000000000A80000-0x0000000000A90000-memory.dmp
memory/4072-15-0x0000000075470000-0x0000000075A21000-memory.dmp
memory/4072-16-0x0000000000A80000-0x0000000000A90000-memory.dmp