Analysis Overview
SHA256
f510b0b4cc33d862c3b1d9b35ee76563cf3044e5d85009d27a46177ab4332b7d
Threat Level: Known bad
The file Client.exe was found to be: Known bad.
Malicious Activity Summary
Async RAT payload
Asyncrat family
AsyncRat
Async RAT payload
Executes dropped EXE
Checks computer location settings
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-04-26 20:23
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-26 20:23
Reported
2023-04-26 20:26
Platform
win7-20230220-en
Max time kernel
144s
Max time network
34s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\app.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 |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\app.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "app" /tr '"C:\Users\Admin\AppData\Local\Temp\app.exe"' & exit
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC60.tmp.bat""
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "app" /tr '"C:\Users\Admin\AppData\Local\Temp\app.exe"'
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\AppData\Local\Temp\app.exe
"C:\Users\Admin\AppData\Local\Temp\app.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp |
Files
memory/1604-54-0x0000000000F60000-0x0000000000F72000-memory.dmp
memory/1604-55-0x000000001B180000-0x000000001B200000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpC60.tmp.bat
| MD5 | 3b24f4704ba426eda5c011d35f467093 |
| SHA1 | 546c32d9f8a55b1734b6d87561f9f4001ace7df7 |
| SHA256 | 196246d927cdc9f8a263798ad041984be477162075bd152fadd3554190f85c98 |
| SHA512 | 49cce688f07f2aaa167de18707e4250c219533a6f6131173ffcc7a12fe2413e2031b7c72183d8b834c3c9113e436d2694020ed0d26902e6fadc9d3af52096cdd |
C:\Users\Admin\AppData\Local\Temp\tmpC60.tmp.bat
| MD5 | 3b24f4704ba426eda5c011d35f467093 |
| SHA1 | 546c32d9f8a55b1734b6d87561f9f4001ace7df7 |
| SHA256 | 196246d927cdc9f8a263798ad041984be477162075bd152fadd3554190f85c98 |
| SHA512 | 49cce688f07f2aaa167de18707e4250c219533a6f6131173ffcc7a12fe2413e2031b7c72183d8b834c3c9113e436d2694020ed0d26902e6fadc9d3af52096cdd |
C:\Users\Admin\AppData\Local\Temp\app.exe
| MD5 | ba749e000163c81a53234fcb21cdd2ee |
| SHA1 | 1650d6019a972f647ad8b58bab7648bd9311cc02 |
| SHA256 | f510b0b4cc33d862c3b1d9b35ee76563cf3044e5d85009d27a46177ab4332b7d |
| SHA512 | 91bb51faf1a3ba3ed3e2ee963642da71df3c9c4ffd4502142407fac1cc99f29fa33b0c73abf50f3e1f095252efbfc9fde6a35fece6002349f25c28837583f5d7 |
C:\Users\Admin\AppData\Local\Temp\app.exe
| MD5 | ba749e000163c81a53234fcb21cdd2ee |
| SHA1 | 1650d6019a972f647ad8b58bab7648bd9311cc02 |
| SHA256 | f510b0b4cc33d862c3b1d9b35ee76563cf3044e5d85009d27a46177ab4332b7d |
| SHA512 | 91bb51faf1a3ba3ed3e2ee963642da71df3c9c4ffd4502142407fac1cc99f29fa33b0c73abf50f3e1f095252efbfc9fde6a35fece6002349f25c28837583f5d7 |
memory/340-68-0x0000000000310000-0x0000000000322000-memory.dmp
memory/340-69-0x000000001B0D0000-0x000000001B150000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-26 20:23
Reported
2023-04-26 20:26
Platform
win10v2004-20230220-en
Max time kernel
144s
Max time network
147s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Client.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\app.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 |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\app.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "app" /tr '"C:\Users\Admin\AppData\Local\Temp\app.exe"' & exit
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA79.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "app" /tr '"C:\Users\Admin\AppData\Local\Temp\app.exe"'
C:\Users\Admin\AppData\Local\Temp\app.exe
"C:\Users\Admin\AppData\Local\Temp\app.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 42.220.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.38.195.152.in-addr.arpa | udp |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| IE | 13.69.239.72:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| US | 8.8.8.8:53 | 45.8.109.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| N/A | 127.0.0.1:8848 | tcp | |
| N/A | 127.0.0.1:8848 | tcp |
Files
memory/3280-133-0x0000000000960000-0x0000000000972000-memory.dmp
memory/3280-134-0x000000001B650000-0x000000001B660000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpCA79.tmp.bat
| MD5 | cafae8c8ce10f629eb6c1bebd16af8d6 |
| SHA1 | d9bd95052291908cc25662424956b43c3de5f783 |
| SHA256 | eae0e843390e926757e8628bbc344e33ab9409d11dd6f67a6e081a2bd65d1edf |
| SHA512 | edfd4c30d696fcc90695c9b2d576a7a440c34bbd19d0e6007f309d67fbdf035fb58e03002578d27de49ad1c265191b28cd8ece6aba59d64ccd0fe6935033751c |
C:\Users\Admin\AppData\Local\Temp\app.exe
| MD5 | ba749e000163c81a53234fcb21cdd2ee |
| SHA1 | 1650d6019a972f647ad8b58bab7648bd9311cc02 |
| SHA256 | f510b0b4cc33d862c3b1d9b35ee76563cf3044e5d85009d27a46177ab4332b7d |
| SHA512 | 91bb51faf1a3ba3ed3e2ee963642da71df3c9c4ffd4502142407fac1cc99f29fa33b0c73abf50f3e1f095252efbfc9fde6a35fece6002349f25c28837583f5d7 |
C:\Users\Admin\AppData\Local\Temp\app.exe
| MD5 | ba749e000163c81a53234fcb21cdd2ee |
| SHA1 | 1650d6019a972f647ad8b58bab7648bd9311cc02 |
| SHA256 | f510b0b4cc33d862c3b1d9b35ee76563cf3044e5d85009d27a46177ab4332b7d |
| SHA512 | 91bb51faf1a3ba3ed3e2ee963642da71df3c9c4ffd4502142407fac1cc99f29fa33b0c73abf50f3e1f095252efbfc9fde6a35fece6002349f25c28837583f5d7 |
memory/4248-143-0x000000001CEE0000-0x000000001CEF0000-memory.dmp
memory/4248-144-0x000000001CEE0000-0x000000001CEF0000-memory.dmp