Analysis Overview
SHA256
447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759
Threat Level: Known bad
The file start.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Asyncrat family
Async RAT payload
Reads user/profile data of web browsers
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Delays execution with timeout.exe
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-25 13:52
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
2024-05-25 13:52
Reported
2024-05-25 13:56
Platform
win7-20240220-en
Max time kernel
121s
Max time network
148s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Reads user/profile data of web browsers
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\start.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\start.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\start.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"' & exit
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2166.tmp.bat""
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
C:\Windows\SysWOW64\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\svchos.exe
"C:\Users\Admin\AppData\Roaming\svchos.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | leetboy.dynuddns.net | udp |
| IT | 185.196.11.252:1339 | leetboy.dynuddns.net | tcp |
Files
memory/2356-0-0x0000000074AAE000-0x0000000074AAF000-memory.dmp
memory/2356-1-0x0000000000FB0000-0x0000000000FC6000-memory.dmp
memory/2356-2-0x0000000074AA0000-0x000000007518E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp2166.tmp.bat
| MD5 | 8e96e4a16cb1b534d96e4182bf374bee |
| SHA1 | 42aa1a7b71d1304d2aca77e2f975ce196061bc1d |
| SHA256 | bbd62f22f660349f84e1f11e54c93aa0ad42b4a3e41fcc23a1011a988edf42e4 |
| SHA512 | b1b694e5813a7a518020155c64aaa0688e99ff2f8b6cfe44ab48edc47421cf4f19f3ace00864f118e6824cb2d2ed438414f42cf1ff5498acb8cab7dc4c5bd913 |
memory/2356-12-0x0000000074AA0000-0x000000007518E000-memory.dmp
\Users\Admin\AppData\Roaming\svchos.exe
| MD5 | c1ade258f05c512e98ebc4d9d1165f8a |
| SHA1 | acf20f6a7dc7841ae06f801b887289fdc99e0488 |
| SHA256 | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759 |
| SHA512 | 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076 |
memory/2804-16-0x0000000001260000-0x0000000001276000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-25 13:52
Reported
2024-05-25 13:56
Platform
win10v2004-20240426-en
Max time kernel
147s
Max time network
155s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\start.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Reads user/profile data of web browsers
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\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\start.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchos.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"' & exit
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5CB6.tmp.bat""
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
C:\Windows\SysWOW64\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\svchos.exe
"C:\Users\Admin\AppData\Roaming\svchos.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | leetboy.dynuddns.net | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| IT | 185.196.11.252:1339 | leetboy.dynuddns.net | tcp |
| US | 8.8.8.8:53 | 252.11.196.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 24.173.189.20.in-addr.arpa | udp |
Files
memory/4720-0-0x00000000745AE000-0x00000000745AF000-memory.dmp
memory/4720-1-0x0000000000A50000-0x0000000000A66000-memory.dmp
memory/4720-2-0x00000000745A0000-0x0000000074D50000-memory.dmp
memory/4720-3-0x00000000054C0000-0x000000000555C000-memory.dmp
memory/4720-8-0x00000000745A0000-0x0000000074D50000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp5CB6.tmp.bat
| MD5 | 712a5eac516d3a1dcd94a3a7ef1a1ada |
| SHA1 | b1e43d3dba3e40896a7bfa61baf1b0f2890725fc |
| SHA256 | c7094e9abc0e0539be3bc5b3ba61a0e1d99b4a29f62b43128f79b1f63bb8b510 |
| SHA512 | f007259420057b9f8db6a8e2b4383d656a691b41e7b6cd51f68b439c9adbadc92675f19a8e215431f4ccef93a8276ac8d09c6cb3740643345017e8235c1d7343 |
C:\Users\Admin\AppData\Roaming\svchos.exe
| MD5 | c1ade258f05c512e98ebc4d9d1165f8a |
| SHA1 | acf20f6a7dc7841ae06f801b887289fdc99e0488 |
| SHA256 | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759 |
| SHA512 | 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076 |
memory/3016-13-0x0000000074500000-0x0000000074CB0000-memory.dmp
memory/3016-14-0x0000000074500000-0x0000000074CB0000-memory.dmp
memory/3016-15-0x00000000057E0000-0x0000000005D84000-memory.dmp
memory/3016-16-0x00000000053D0000-0x0000000005462000-memory.dmp
memory/3016-17-0x0000000005390000-0x000000000539A000-memory.dmp
memory/3016-20-0x0000000006500000-0x0000000006566000-memory.dmp
memory/3016-21-0x0000000074500000-0x0000000074CB0000-memory.dmp
memory/3016-22-0x0000000074500000-0x0000000074CB0000-memory.dmp