Analysis Overview
SHA256
8f7e023dc4dbcdc54eb908b7c1c752a0a1f29bb6521686376f968090549e653e
Threat Level: Known bad
The file scheduler_a.dll was found to be: Known bad.
Malicious Activity Summary
TA505
UPX packed file
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2021-08-31 13:13
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-08-31 13:13
Reported
2021-08-31 13:17
Platform
win7v20210408
Max time kernel
125s
Max time network
157s
Command Line
Signatures
TA505
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1920 wrote to memory of 1224 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\scheduler_a.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\scheduler_a.dll,#1
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | microsoft-hub-us.com | udp |
Files
memory/1224-60-0x0000000000000000-mapping.dmp
memory/1224-61-0x0000000076691000-0x0000000076693000-memory.dmp
memory/1224-62-0x0000000000170000-0x0000000000171000-memory.dmp
memory/1224-63-0x0000000010000000-0x0000000012044000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-08-31 13:13
Reported
2021-08-31 13:16
Platform
win10v20210410
Max time kernel
13s
Max time network
122s
Command Line
Signatures
TA505
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3168 wrote to memory of 4000 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3168 wrote to memory of 4000 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3168 wrote to memory of 4000 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\scheduler_a.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\scheduler_a.dll,#1
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | microsoft-hub-us.com | udp |
Files
memory/4000-114-0x0000000000000000-mapping.dmp
memory/4000-115-0x0000000000590000-0x00000000006DA000-memory.dmp
memory/4000-116-0x0000000010000000-0x0000000012044000-memory.dmp