Analysis Overview
SHA256
aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628
Threat Level: Known bad
The file aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
Sets service image path in registry
Drops file in Drivers directory
UPX packed file
Adds Run key to start application
Installs/modifies Browser Helper Object
Modifies WinLogon
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-23 23:47
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-23 23:47
Reported
2024-03-23 23:49
Platform
win7-20240215-en
Max time kernel
140s
Max time network
123s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
UPX dump on OEP (original entry point)
| 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 |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\drivers\winupdat.exe | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\drivers\winupdat.exe | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
UPX packed file
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3} | C:\Windows\SysWOW64\reg.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{72853161-30C5-4D22-B7F9-0BBC1D38A37E} | C:\Windows\SysWOW64\reg.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B4F3A835-0E21-4959-BA22-42B3008E02FF} | C:\Windows\SysWOW64\reg.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects | C:\Windows\SysWOW64\reg.exe | N/A |
Modifies WinLogon
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2356 wrote to memory of 2996 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
| PID 2356 wrote to memory of 2996 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
| PID 2356 wrote to memory of 2996 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
| PID 2356 wrote to memory of 2996 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
"C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe"
C:\Windows\SysWOW64\reg.exe
reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
Network
| Country | Destination | Domain | Proto |
| RU | 89.223.13.242:80 | tcp | |
| RU | 89.223.13.242:80 | tcp |
Files
memory/2356-0-0x0000000000400000-0x0000000000414000-memory.dmp
C:\Users\Admin\AppData\Local\explores.exe
| MD5 | d3912c99d8dd92ca77f57caa0f30cf0d |
| SHA1 | 8712e7c7bccc7ed906f5b28a62238b875d1e86ec |
| SHA256 | 4d910b1cff6ebf6bfc57102e15c172caa3c58f6e9a101a603770feff63a48389 |
| SHA512 | b51ff3223466cb20eae5ae55405fa82b5eaafe04fb997fe50bec9c9040d49bb3b1efcc4dcec66a0083ddd71ee9cbfd6f2f97e91a7526b04c46a962cdc41a6f14 |
memory/2356-7-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2356-11-0x0000000000400000-0x0000000000414000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-23 23:47
Reported
2024-03-23 23:49
Platform
win10v2004-20240226-en
Max time kernel
153s
Max time network
151s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
UPX dump on OEP (original entry point)
| 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 |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\drivers\winupdat.exe | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| File created | C:\Windows\SysWOW64\drivers\winupdat.exe | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
UPX packed file
| 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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\winupdat.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\explores.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Installs/modifies Browser Helper Object
| Description | Indicator | Process | Target |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} | C:\Windows\SysWOW64\reg.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} | C:\Windows\SysWOW64\reg.exe | N/A |
| Key deleted | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects | C:\Windows\SysWOW64\reg.exe | N/A |
Modifies WinLogon
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 224 wrote to memory of 708 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
| PID 224 wrote to memory of 708 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
| PID 224 wrote to memory of 708 | N/A | C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe | C:\Windows\SysWOW64\reg.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe
"C:\Users\Admin\AppData\Local\Temp\aeee5dd4338d9e5a4632763b77144f3603b3b4bff78884b002cad20c35c8f628.exe"
C:\Windows\SysWOW64\reg.exe
reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
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=3700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| GB | 142.250.187.234:443 | tcp | |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| RU | 89.223.13.242:80 | tcp | |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 27.73.42.20.in-addr.arpa | udp |
Files
memory/224-0-0x0000000000400000-0x0000000000414000-memory.dmp
C:\Users\Admin\AppData\Local\explores.exe
| MD5 | 2186f4572063933791bde070ea83820c |
| SHA1 | 76f9ae518d7a6aa8c55730a95bfca82abe627e6f |
| SHA256 | b01894596797f56d13927e23cbbb8418db7708d2b0119dd541762e5c00e679a6 |
| SHA512 | 0f8ab96e4bd4a1b21f7f6a33e43756aaae231c669186b7195064fcd1c3585830549b5280663fa8a4d7f9ae8e99ff3860e1b6349a0783fdc6fe645cdd7b165bf3 |
memory/224-7-0x0000000000400000-0x0000000000414000-memory.dmp
memory/224-9-0x0000000000400000-0x0000000000414000-memory.dmp