Analysis Overview
SHA256
149e9d049c83abff4843e0fab7f6cde552aef61e32a53d61e76f6c5adc3db25f
Threat Level: Known bad
The file abb84f7bbcc5585765153cd445c8c07d.exe was found to be: Known bad.
Malicious Activity Summary
NanoCore
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Checks whether UAC is enabled
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Creates scheduled task(s)
Kills process with taskkill
Runs ping.exe
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-06 10:21
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-06 10:21
Reported
2024-01-06 10:23
Platform
win7-20231129-en
Max time kernel
0s
Max time network
121s
Command Line
Signatures
NanoCore
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TCP Service = "C:\\Program Files\\TCP Service\\tcpsv.exe" | C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.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\SecurityHealthService.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\TCP Service\tcpsv.exe | C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe | N/A |
| File opened for modification | C:\Program Files\TCP Service\tcpsv.exe | C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe
"C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1585.tmp"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1526.tmp"
C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe
"C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe"
C:\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe
"C:\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe"
C:\Windows\system32\PING.EXE
ping -n 1 -w 3000 1.1.1.1
C:\Windows\system32\taskkill.exe
taskkill /f /im "SecurityHealthService.exe"
C:\Windows\system32\cmd.exe
"cmd.exe" /C taskkill /f /im "SecurityHealthService.exe" & ping -n 1 -w 3000 1.1.1.1 & type nul > "C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe" & del /f /q "C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /delete /f /tn "TCP Service Task"
C:\Windows\system32\schtasks.exe
"schtasks.exe" /delete /f /tn "TCP Service"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | yourself-catholic.gl.at.ply.gg | udp |
| US | 147.185.221.17:56274 | yourself-catholic.gl.at.ply.gg | tcp |
Files
memory/2172-17-0x000007FEF5140000-0x000007FEF5ADD000-memory.dmp
memory/2172-18-0x000007FEF5140000-0x000007FEF5ADD000-memory.dmp
memory/2172-20-0x00000000020A0000-0x0000000002120000-memory.dmp
memory/2172-30-0x00000000002B0000-0x00000000002C2000-memory.dmp
memory/2172-39-0x0000000002240000-0x000000000225E000-memory.dmp
memory/2172-42-0x00000000023B0000-0x00000000023C4000-memory.dmp
memory/2172-43-0x000000001BF30000-0x000000001C030000-memory.dmp
memory/2172-41-0x0000000002380000-0x00000000023AE000-memory.dmp
memory/2172-44-0x000000001BF30000-0x000000001C030000-memory.dmp
memory/2172-40-0x00000000002E0000-0x00000000002EA000-memory.dmp
memory/2172-38-0x0000000002230000-0x000000000223E000-memory.dmp
memory/2172-37-0x0000000002220000-0x0000000002234000-memory.dmp
memory/2172-36-0x0000000002090000-0x00000000020A0000-memory.dmp
memory/2172-35-0x0000000002080000-0x0000000002094000-memory.dmp
memory/2172-34-0x0000000002070000-0x000000000207C000-memory.dmp
memory/2172-33-0x0000000000830000-0x000000000083E000-memory.dmp
memory/2172-32-0x0000000000290000-0x000000000029E000-memory.dmp
memory/2172-31-0x0000000000810000-0x000000000082A000-memory.dmp
memory/2172-29-0x0000000000800000-0x000000000080A000-memory.dmp
memory/2172-28-0x00000000020A0000-0x0000000002120000-memory.dmp
memory/2172-19-0x00000000020A0000-0x0000000002120000-memory.dmp
memory/1804-14-0x000000013F340000-0x000000013F3E3000-memory.dmp
memory/2076-6-0x0000000002A70000-0x0000000002B13000-memory.dmp
\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/1804-47-0x000000013F340000-0x000000013F3E3000-memory.dmp
memory/2172-54-0x00000000020A0000-0x0000000002120000-memory.dmp
memory/2172-55-0x000007FEF5140000-0x000007FEF5ADD000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-06 10:21
Reported
2024-01-06 10:23
Platform
win10v2004-20231222-en
Max time kernel
0s
Max time network
101s
Command Line
Signatures
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe
"C:\Users\Admin\AppData\Local\Temp\abb84f7bbcc5585765153cd445c8c07d.exe"
C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe
"C:\Users\Admin\AppData\Local\Temp\SecurityHealthService.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4D08.tmp"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4CD8.tmp"
C:\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe
"C:\Users\Admin\AppData\Local\Temp\Tayz Woofer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | yourself-catholic.gl.at.ply.gg | udp |
| US | 147.185.221.17:56274 | yourself-catholic.gl.at.ply.gg | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.221.185.147.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| GB | 88.221.134.32:80 | tcp | |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
Files
memory/4168-10-0x00007FF64B5A0000-0x00007FF64B643000-memory.dmp
memory/4768-18-0x000000001C3D0000-0x000000001C89E000-memory.dmp
memory/4768-20-0x00007FFF110E0000-0x00007FFF11A81000-memory.dmp
memory/4768-22-0x0000000001980000-0x0000000001990000-memory.dmp
memory/4768-23-0x000000001BEE0000-0x000000001BEE8000-memory.dmp
memory/4768-21-0x000000001CA50000-0x000000001CAF6000-memory.dmp
memory/4768-19-0x000000001BE30000-0x000000001BECC000-memory.dmp
memory/4768-24-0x0000000001980000-0x0000000001990000-memory.dmp
memory/4768-17-0x00007FFF110E0000-0x00007FFF11A81000-memory.dmp
memory/4768-33-0x000000001D550000-0x000000001D55A000-memory.dmp
memory/4768-38-0x000000001D770000-0x000000001D77C000-memory.dmp
memory/4768-43-0x000000001D8B0000-0x000000001D8CE000-memory.dmp
memory/4768-45-0x000000001D900000-0x000000001D92E000-memory.dmp
memory/4768-47-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-46-0x000000001D930000-0x000000001D944000-memory.dmp
memory/4768-49-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-48-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-44-0x000000001CB10000-0x000000001CB1A000-memory.dmp
memory/4768-42-0x000000001CCA0000-0x000000001CCAE000-memory.dmp
memory/4768-41-0x000000001CB90000-0x000000001CBA4000-memory.dmp
memory/4768-40-0x000000001CB70000-0x000000001CB80000-memory.dmp
memory/4768-39-0x000000001D8A0000-0x000000001D8B4000-memory.dmp
memory/4768-37-0x000000001D760000-0x000000001D76E000-memory.dmp
memory/4768-36-0x000000001D4D0000-0x000000001D4DE000-memory.dmp
memory/4768-35-0x000000001D880000-0x000000001D89A000-memory.dmp
memory/4768-34-0x000000001CBA0000-0x000000001CBB2000-memory.dmp
memory/4768-32-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-51-0x000000001E540000-0x000000001E5A2000-memory.dmp
memory/4768-53-0x00007FFF110E0000-0x00007FFF11A81000-memory.dmp
memory/4768-54-0x00007FFF110E0000-0x00007FFF11A81000-memory.dmp
memory/4768-55-0x0000000001980000-0x0000000001990000-memory.dmp
memory/4768-56-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-57-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-59-0x000000001CFD0000-0x000000001D0D0000-memory.dmp
memory/4768-58-0x000000001CFD0000-0x000000001D0D0000-memory.dmp