Analysis Overview
SHA256
cd331d42e2ecc66b8a2f7388bea49900940830292e1f902c8fabbb2d8acec213
Threat Level: Known bad
The file c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.zip was found to be: Known bad.
Malicious Activity Summary
Async RAT payload
AsyncRat
Asyncrat family
Async RAT payload
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-21 14:31
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-21 14:31
Reported
2023-03-21 14:33
Platform
win7-20230220-en
Max time kernel
145s
Max time network
108s
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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft Services.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\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Microsoft Services.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
"C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"' & exit
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp.bat""
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"'
C:\Windows\system32\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | thebest39393.ddns.net | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| US | 8.8.8.8:53 | thebest39393.ddns.net | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp |
Files
memory/1368-54-0x0000000001200000-0x0000000001212000-memory.dmp
memory/1368-55-0x000000001B270000-0x000000001B2F0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp.bat
| MD5 | e7bd34576e0f8037cd53b4f2b6499a95 |
| SHA1 | 94b9487ab6228771b668d99ecea3c2cbf3fbe2e5 |
| SHA256 | 77db5c98c46e6a5eeaafc0239d8becfe1708570c2afd3ed22f77a1c41f3fadb3 |
| SHA512 | 567091eaeb2128546913f7f9387ae77e58b58021c8d8969a2d1d6a1faa22292e3099590314c6d41fb5c312b51fe1e43b76c8e92e88b1b79ce334085efcfe8bd6 |
C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp.bat
| MD5 | e7bd34576e0f8037cd53b4f2b6499a95 |
| SHA1 | 94b9487ab6228771b668d99ecea3c2cbf3fbe2e5 |
| SHA256 | 77db5c98c46e6a5eeaafc0239d8becfe1708570c2afd3ed22f77a1c41f3fadb3 |
| SHA512 | 567091eaeb2128546913f7f9387ae77e58b58021c8d8969a2d1d6a1faa22292e3099590314c6d41fb5c312b51fe1e43b76c8e92e88b1b79ce334085efcfe8bd6 |
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
| MD5 | 0c2353b8b6923a16f523944d6514bb8f |
| SHA1 | d66baa60bcfbc057466b3ca0ef3076c5fd02210b |
| SHA256 | c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3 |
| SHA512 | 857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d |
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
| MD5 | 0c2353b8b6923a16f523944d6514bb8f |
| SHA1 | d66baa60bcfbc057466b3ca0ef3076c5fd02210b |
| SHA256 | c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3 |
| SHA512 | 857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d |
memory/1952-68-0x00000000001D0000-0x00000000001E2000-memory.dmp
memory/1952-69-0x0000000000530000-0x00000000005B0000-memory.dmp
memory/1952-70-0x0000000000530000-0x00000000005B0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-03-21 14:31
Reported
2023-03-21 14:33
Platform
win10v2004-20230220-en
Max time kernel
130s
Max time network
149s
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-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft Services.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\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Microsoft Services.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
"C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"' & exit
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB77D.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"'
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.38.195.152.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.154.139.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:8809 | tcp | |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:8809 | tcp | |
| US | 20.189.173.4:443 | tcp | |
| US | 8.8.8.8:53 | thebest39393.ddns.net | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| US | 93.184.221.240:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| US | 8.8.8.8:53 | 210.81.184.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 216.74.101.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 233.141.123.20.in-addr.arpa | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| US | 8.8.8.8:53 | 11.175.53.84.in-addr.arpa | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
| N/A | 127.0.0.1:8809 | tcp | |
| N/A | 127.0.0.1:8809 | tcp | |
| US | 8.8.8.8:53 | thebest39393.ddns.net | udp |
| US | 99.114.251.177:8809 | thebest39393.ddns.net | tcp |
Files
memory/3716-133-0x0000000000C30000-0x0000000000C42000-memory.dmp
memory/3716-134-0x0000000002D00000-0x0000000002D10000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpB77D.tmp.bat
| MD5 | 5ca716bcb3f7a33e29b325b61d67dbd7 |
| SHA1 | b2671dad9b36d778611cf2239794102342d9c4c0 |
| SHA256 | 3fc9801c82ecace3781a149c9b270d8ac00fd8ba37563fda87b8c6f736fda2e9 |
| SHA512 | f74abd29a27e414f15760f78e161eadea0bb5ed18b65aaea36fe8d95f9ca276053a961d26383f327d3ea9df52759bb08ec6ac9e21d864e6ae406eb926745c4ac |
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
| MD5 | 0c2353b8b6923a16f523944d6514bb8f |
| SHA1 | d66baa60bcfbc057466b3ca0ef3076c5fd02210b |
| SHA256 | c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3 |
| SHA512 | 857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d |
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe
| MD5 | 0c2353b8b6923a16f523944d6514bb8f |
| SHA1 | d66baa60bcfbc057466b3ca0ef3076c5fd02210b |
| SHA256 | c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3 |
| SHA512 | 857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d |
memory/3688-143-0x0000000002AB0000-0x0000000002AC0000-memory.dmp
memory/3688-144-0x0000000002AB0000-0x0000000002AC0000-memory.dmp