Analysis Overview
SHA256
84a10e968ebf326f31f230f19bc4aced4388e87cecb3f08b7d9cadfec3627df4
Threat Level: Known bad
The file AsyncClient.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Asyncrat family
Async RAT payload
Async RAT payload
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Enumerates physical storage devices
Unsigned PE
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-16 23:06
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
2024-04-16 23:06
Reported
2024-04-16 23:10
Platform
win7-20240221-en
Max time kernel
162s
Max time network
175s
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\Svchost.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
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\AsyncClient.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"' & exit
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA506.tmp.bat""
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"'
C:\Windows\SysWOW64\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\Svchost.exe
"C:\Users\Admin\AppData\Roaming\Svchost.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | report-dust.gl.at.ply.gg | udp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
Files
memory/2100-0-0x00000000003B0000-0x00000000003C2000-memory.dmp
memory/2100-1-0x0000000074250000-0x000000007493E000-memory.dmp
memory/2100-2-0x0000000004D70000-0x0000000004DB0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpA506.tmp.bat
| MD5 | 379882b5c10e39492e34a1880f7e8e2c |
| SHA1 | eb5d3bf30d3ec84f0bf94dd4e33f09efc12b8143 |
| SHA256 | eaa823732b6fca85ebf03fa114609bae3e602184cceb6628b3e575447e135bfb |
| SHA512 | 570e3c8a108b02589e30ae0fb4df493792890c9c90720f7d2dc7cc2587e22ac3fbec88396c96ffeef78eab3c2ea763870fd01f8738f026fbb3627fa3b26fecfa |
memory/2100-11-0x0000000074250000-0x000000007493E000-memory.dmp
\Users\Admin\AppData\Roaming\Svchost.exe
| MD5 | d933c68464a25181fceeaf51aff27c7d |
| SHA1 | c683186a615cc17e30a234e3a8ed666528c81998 |
| SHA256 | 84a10e968ebf326f31f230f19bc4aced4388e87cecb3f08b7d9cadfec3627df4 |
| SHA512 | e62f70bc6437ec94bbab5b3f098b52861b7b7e4eaaafd4d82abb77df6e9c1307a771ee5a1fbdb3ca0afafd22a1cd5cee5b3cfaedc10f00af5b0715bf544c44aa |
memory/2620-16-0x0000000000E30000-0x0000000000E42000-memory.dmp
memory/2620-17-0x0000000074150000-0x000000007483E000-memory.dmp
memory/2620-18-0x0000000000520000-0x0000000000560000-memory.dmp
memory/2620-19-0x0000000074150000-0x000000007483E000-memory.dmp
memory/2620-20-0x0000000000520000-0x0000000000560000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-16 23:06
Reported
2024-04-16 23:09
Platform
win10v2004-20240226-en
Max time kernel
147s
Max time network
158s
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Svchost.exe | N/A |
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\AsyncClient.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"' & exit
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4541.tmp.bat""
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"'
C:\Windows\SysWOW64\timeout.exe
timeout 3
C:\Users\Admin\AppData\Roaming\Svchost.exe
"C:\Users\Admin\AppData\Roaming\Svchost.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4020 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | report-dust.gl.at.ply.gg | udp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 19.221.185.147.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 13.107.253.67:443 | tcp | |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
| US | 8.8.8.8:53 | 213.143.182.52.in-addr.arpa | udp |
| US | 147.185.221.19:28329 | report-dust.gl.at.ply.gg | tcp |
Files
memory/5064-0-0x0000000074B70000-0x0000000075320000-memory.dmp
memory/5064-1-0x0000000000140000-0x0000000000152000-memory.dmp
memory/5064-2-0x0000000004B20000-0x0000000004B30000-memory.dmp
memory/5064-3-0x0000000004E30000-0x0000000004ECC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp4541.tmp.bat
| MD5 | fd97a97518adb73a8063cb441446c966 |
| SHA1 | 7f52fe4b179fe0928f9520f07d4230fa0bb1ba6f |
| SHA256 | 1cd65d874c205120793348e381b2c482f8a39de147554a68b4d6a9c4ba787919 |
| SHA512 | ee482484ffa8c71abcd83bad10fcd33e5a73aa2089ede4b8f14e06b8c2b374355dc9a5340b3fbdd21ca7fba838e525e607e82a9a1989b891d362f2db7fcdb3d4 |
memory/5064-9-0x0000000074B70000-0x0000000075320000-memory.dmp
C:\Users\Admin\AppData\Roaming\Svchost.exe
| MD5 | d933c68464a25181fceeaf51aff27c7d |
| SHA1 | c683186a615cc17e30a234e3a8ed666528c81998 |
| SHA256 | 84a10e968ebf326f31f230f19bc4aced4388e87cecb3f08b7d9cadfec3627df4 |
| SHA512 | e62f70bc6437ec94bbab5b3f098b52861b7b7e4eaaafd4d82abb77df6e9c1307a771ee5a1fbdb3ca0afafd22a1cd5cee5b3cfaedc10f00af5b0715bf544c44aa |
memory/4652-13-0x0000000074AF0000-0x00000000752A0000-memory.dmp
memory/4652-14-0x0000000074AF0000-0x00000000752A0000-memory.dmp