Analysis Overview
SHA256
5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f
Threat Level: Known bad
The file go.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-02 12:02
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-02 12:02
Reported
2024-04-02 12:04
Platform
win10v2004-20240226-en
Max time kernel
141s
Max time network
156s
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\go.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\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\Local\Temp\pop3.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 SetThreadContext
| Description | Indicator | Process | Target |
| PID 3356 set thread context of 656 | N/A | C:\Users\Admin\AppData\Local\Temp\pop3.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe |
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:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe | N/A |
| 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\go.exe
"C:\Users\Admin\AppData\Local\Temp\go.exe"
C:\Users\Admin\AppData\Local\Temp\pop3.exe
"C:\Users\Admin\AppData\Local\Temp\pop3.exe"
C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.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\tmp3E9A.tmp.bat""
C:\Windows\SysWOW64\timeout.exe
timeout 3
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
C:\Users\Admin\AppData\Roaming\svchos.exe
"C:\Users\Admin\AppData\Roaming\svchos.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=3972 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.110.86.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.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 | blue.o7lab.me | udp |
| GB | 23.44.234.16:80 | tcp | |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| US | 8.8.8.8:53 | leetboy.dynuddns.net | udp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 35.34.16.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.162.23.2.in-addr.arpa | udp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| US | 8.8.8.8:53 | 145.136.73.23.in-addr.arpa | udp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.56.20.217.in-addr.arpa | udp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| US | 8.8.8.8:53 | 6.173.189.20.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\pop3.exe
| MD5 | 8cd2675e19a8b1dccf0dbf082f42ab33 |
| SHA1 | 3b6a8a51f53d8ec6e773f2a28f80fb003311597b |
| SHA256 | 392ca70b63b6db8e0dc3aab0b6506169d5d9d2cad36598d037794be5a82bec09 |
| SHA512 | b4260fe93196d71f38ab386a17db0ac91a1116ef155771f789579d3150b4c74abb23f289bc042ced1fe7b905f1f1645435837223b3ca331d1e1d55c7eb4a5711 |
C:\Users\Admin\AppData\Local\Temp\start.exe
| MD5 | c1ade258f05c512e98ebc4d9d1165f8a |
| SHA1 | acf20f6a7dc7841ae06f801b887289fdc99e0488 |
| SHA256 | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759 |
| SHA512 | 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076 |
memory/3356-19-0x000002886A280000-0x000002886A28C000-memory.dmp
memory/3356-23-0x00007FFE6D0C0000-0x00007FFE6DB81000-memory.dmp
memory/3356-24-0x000002886C7B0000-0x000002886C7C0000-memory.dmp
memory/1992-25-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/1992-26-0x00000000004D0000-0x00000000004E6000-memory.dmp
memory/3356-27-0x000002886C700000-0x000002886C76A000-memory.dmp
memory/656-28-0x0000000000400000-0x0000000000416000-memory.dmp
memory/656-29-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/1992-30-0x0000000004FB0000-0x0000000004FC0000-memory.dmp
memory/656-31-0x00000000031B0000-0x00000000031C0000-memory.dmp
memory/3356-32-0x00007FFE6D0C0000-0x00007FFE6DB81000-memory.dmp
memory/1992-33-0x0000000005260000-0x00000000052FC000-memory.dmp
memory/656-34-0x0000000077711000-0x0000000077712000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp3E9A.tmp.bat
| MD5 | cdbc760d8d749db47f4317c336c05d43 |
| SHA1 | d40fb4cdee015e750d21503fd775a4b851dce354 |
| SHA256 | 3bbd9784ad469fa8e6eece6a14021b943ff50f27e893a8d6d315690ecfa60ae7 |
| SHA512 | 8805e175a559d72be4290f3aea1785d8ef6f64e3f4fb0be8b0165eeb2402cc6d97ed64bde54448974275f089dc4944436e4c8a37aeca4c70a64634bbb7c52763 |
memory/1992-40-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/4476-44-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/4476-45-0x0000000005600000-0x0000000005610000-memory.dmp
memory/4476-46-0x0000000006200000-0x00000000067A4000-memory.dmp
memory/4476-47-0x0000000005DF0000-0x0000000005E82000-memory.dmp
memory/4476-48-0x0000000005DC0000-0x0000000005DCA000-memory.dmp
memory/656-49-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/656-50-0x00000000031B0000-0x00000000031C0000-memory.dmp
memory/4476-51-0x0000000074DA0000-0x0000000075550000-memory.dmp
memory/4476-52-0x0000000005600000-0x0000000005610000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-02 12:02
Reported
2024-04-02 12:04
Platform
win7-20240221-en
Max time kernel
144s
Max time network
150s
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\Local\Temp\pop3.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 |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\go.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\go.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2864 set thread context of 2640 | N/A | C:\Users\Admin\AppData\Local\Temp\pop3.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe |
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\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:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe | N/A |
| 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\go.exe
"C:\Users\Admin\AppData\Local\Temp\go.exe"
C:\Users\Admin\AppData\Local\Temp\pop3.exe
"C:\Users\Admin\AppData\Local\Temp\pop3.exe"
C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2864 -s 720
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\tmp6401.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 | blue.o7lab.me | udp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| US | 8.8.8.8:53 | leetboy.dynuddns.net | udp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
| NL | 94.156.66.112:4449 | blue.o7lab.me | tcp |
| US | 8.8.8.8:53 | leetboy.dynuddns.net | udp |
| NL | 91.92.249.94:1339 | leetboy.dynuddns.net | tcp |
Files
\Users\Admin\AppData\Local\Temp\pop3.exe
| MD5 | 8cd2675e19a8b1dccf0dbf082f42ab33 |
| SHA1 | 3b6a8a51f53d8ec6e773f2a28f80fb003311597b |
| SHA256 | 392ca70b63b6db8e0dc3aab0b6506169d5d9d2cad36598d037794be5a82bec09 |
| SHA512 | b4260fe93196d71f38ab386a17db0ac91a1116ef155771f789579d3150b4c74abb23f289bc042ced1fe7b905f1f1645435837223b3ca331d1e1d55c7eb4a5711 |
\Users\Admin\AppData\Local\Temp\start.exe
| MD5 | c1ade258f05c512e98ebc4d9d1165f8a |
| SHA1 | acf20f6a7dc7841ae06f801b887289fdc99e0488 |
| SHA256 | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759 |
| SHA512 | 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076 |
memory/2864-13-0x0000000000ED0000-0x0000000000EDC000-memory.dmp
memory/2864-14-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp
memory/2492-15-0x00000000003C0000-0x00000000003D6000-memory.dmp
memory/2492-16-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2864-17-0x000000001B1B0000-0x000000001B230000-memory.dmp
memory/2864-18-0x000000001B5B0000-0x000000001B61A000-memory.dmp
memory/2640-19-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-20-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-21-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-22-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2640-24-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-26-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-28-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2640-29-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2492-34-0x0000000001EF0000-0x0000000001F30000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp6401.tmp.bat
| MD5 | c3ecc0ada93692cb3613e91f0d74e0eb |
| SHA1 | 935b915704a5a63dd87dc32e2aac5f1cd5852115 |
| SHA256 | 49dec77638e606b9f46247652aa6607531abed6666bf561e97ae8f28cf0fa35c |
| SHA512 | 90ca70cb5d692dc3124764d64d137e36495d91872bd9953d1c8b09c090d4ab24d1fd44557b444724c09c19e9cf25816e7dd26d70467fcb9813de5af89a7d1d0f |
memory/2640-44-0x0000000076F80000-0x0000000076F81000-memory.dmp
memory/2492-46-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2808-50-0x00000000002E0000-0x00000000002F6000-memory.dmp
memory/2808-51-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2864-52-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp
memory/2808-53-0x0000000004920000-0x0000000004960000-memory.dmp
memory/2864-54-0x000000001B1B0000-0x000000001B230000-memory.dmp
memory/2640-55-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2640-56-0x0000000004DF0000-0x0000000004E30000-memory.dmp
memory/2808-57-0x0000000073F40000-0x000000007462E000-memory.dmp
memory/2808-58-0x0000000004920000-0x0000000004960000-memory.dmp