Analysis Overview
SHA256
4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
Threat Level: Known bad
The file MrsMajor3.0.exe was found to be: Known bad.
Malicious Activity Summary
UAC bypass
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
System policy modification
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Modifies data under HKEY_USERS
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-09 06:50
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-09 06:50
Reported
2024-03-09 06:52
Platform
win7-20240220-en
Max time kernel
122s
Max time network
122s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\system32\wscript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe | N/A |
Obfuscated with Agile.Net obfuscator
| 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 |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2496 wrote to memory of 2072 | N/A | C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe | C:\Windows\system32\wscript.exe |
| PID 2496 wrote to memory of 2072 | N/A | C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe | C:\Windows\system32\wscript.exe |
| PID 2496 wrote to memory of 2072 | N/A | C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe | C:\Windows\system32\wscript.exe |
| PID 2072 wrote to memory of 2520 | N/A | C:\Windows\system32\wscript.exe | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe |
| PID 2072 wrote to memory of 2520 | N/A | C:\Windows\system32\wscript.exe | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe |
| PID 2072 wrote to memory of 2520 | N/A | C:\Windows\system32\wscript.exe | C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe |
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\system32\wscript.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System | C:\Windows\system32\wscript.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe
"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"
C:\Windows\system32\wscript.exe
"C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\B08.tmp\B09.tmp\B0A.vbs //Nologo
C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe
"C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe"
Network
Files
C:\Users\Admin\AppData\Local\Temp\B08.tmp\B09.tmp\B0A.vbs
| MD5 | 3b8696ecbb737aad2a763c4eaf62c247 |
| SHA1 | 4a2d7a2d61d3f4c414b4e5d2933cd404b8f126e5 |
| SHA256 | ce95f7eea8b303bc23cfd6e41748ad4e7b5e0f0f1d3bdf390eadb1e354915569 |
| SHA512 | 713d9697b892b9dd892537e8a01eab8d0265ebf64867c8beecf7a744321257c2a5c11d4de18fcb486bb69f199422ce3cab8b6afdbe880481c47b06ba8f335beb |
C:\Users\Admin\AppData\Local\Temp\B08.tmp\eulascr.exe
| MD5 | 8b1c352450e480d9320fce5e6f2c8713 |
| SHA1 | d6bd88bf33de7c5d4e68b233c37cc1540c97bd3a |
| SHA256 | 2c343174231b55e463ca044d19d47bd5842793c15954583eb340bfd95628516e |
| SHA512 | 2d8e43b1021da08ed1bf5aff110159e6bc10478102c024371302ccfce595e77fd76794658617b5b52f9a50190db250c1ba486d247d9cd69e4732a768edbb4cbc |
memory/2520-8-0x00000000013D0000-0x00000000013FA000-memory.dmp
memory/2520-9-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp
memory/2520-10-0x000000001AEE0000-0x000000001AF60000-memory.dmp
\Users\Admin\AppData\Local\Temp\5a530dfd-bc51-4992-a05d-f09d41a331d4\AgileDotNetRT64.dll
| MD5 | 42b2c266e49a3acd346b91e3b0e638c0 |
| SHA1 | 2bc52134f03fcc51cb4e0f6c7cf70646b4df7dd1 |
| SHA256 | adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29 |
| SHA512 | 770822fd681a1d98afe03f6fbe5f116321b54c8e2989fb07491811fd29fca5b666f1adf4c6900823af1271e342cacc9293e9db307c4eef852d1a253b00347a81 |
memory/2520-17-0x000007FEF3F10000-0x000007FEF403C000-memory.dmp
memory/2520-18-0x000000001AEE0000-0x000000001AF60000-memory.dmp
memory/2520-19-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-09 06:50
Reported
2024-03-09 06:51
Platform
win10v2004-20240226-en
Max time kernel
86s
Max time network
91s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\system32\wscript.exe | 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\MrsMajor3.0.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Windows\system32\wscript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe | N/A |
Obfuscated with Agile.Net obfuscator
| 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 |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "221" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" | C:\Windows\system32\LogonUI.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\LogonUI.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 556 wrote to memory of 3188 | N/A | C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe | C:\Windows\system32\wscript.exe |
| PID 556 wrote to memory of 3188 | N/A | C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe | C:\Windows\system32\wscript.exe |
| PID 3188 wrote to memory of 1608 | N/A | C:\Windows\system32\wscript.exe | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe |
| PID 3188 wrote to memory of 1608 | N/A | C:\Windows\system32\wscript.exe | C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe |
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System | C:\Windows\system32\wscript.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\system32\wscript.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe
"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"
C:\Windows\system32\wscript.exe
"C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\D4E5.tmp\D4E6.vbs //Nologo
C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe
"C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.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=3612 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa394f055 /state1:0x41c64e6d
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 14.160.190.20.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 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.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 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| GB | 142.250.187.234:443 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\D4E5.tmp\D4E6.vbs
| MD5 | 3b8696ecbb737aad2a763c4eaf62c247 |
| SHA1 | 4a2d7a2d61d3f4c414b4e5d2933cd404b8f126e5 |
| SHA256 | ce95f7eea8b303bc23cfd6e41748ad4e7b5e0f0f1d3bdf390eadb1e354915569 |
| SHA512 | 713d9697b892b9dd892537e8a01eab8d0265ebf64867c8beecf7a744321257c2a5c11d4de18fcb486bb69f199422ce3cab8b6afdbe880481c47b06ba8f335beb |
C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe
| MD5 | 023fdb3c44260ca37af39c19c54fe3ec |
| SHA1 | d20762f2def6c9afcef41f76d2ab59736664e903 |
| SHA256 | 5433fb5ee15a097d301834373c2150cb814f01e2e45a2b9e4eef9bc0b6875fb3 |
| SHA512 | 0dd07fdb002721f421b93e0f9234f854da95b383560f6c0d4559bb8d5f77b3f42b8a2206a068ed881e34787b62326ef8091ef9b25c4a4c2c86d7a2aa72cd876d |
C:\Users\Admin\AppData\Local\Temp\D4E4.tmp\eulascr.exe
| MD5 | 8b1c352450e480d9320fce5e6f2c8713 |
| SHA1 | d6bd88bf33de7c5d4e68b233c37cc1540c97bd3a |
| SHA256 | 2c343174231b55e463ca044d19d47bd5842793c15954583eb340bfd95628516e |
| SHA512 | 2d8e43b1021da08ed1bf5aff110159e6bc10478102c024371302ccfce595e77fd76794658617b5b52f9a50190db250c1ba486d247d9cd69e4732a768edbb4cbc |
memory/1608-8-0x0000000000190000-0x00000000001BA000-memory.dmp
memory/1608-9-0x00007FF9702A0000-0x00007FF970D61000-memory.dmp
memory/1608-10-0x000000001AF40000-0x000000001AF50000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\5a530dfd-bc51-4992-a05d-f09d41a331d4\AgileDotNetRT64.dll
| MD5 | 42b2c266e49a3acd346b91e3b0e638c0 |
| SHA1 | 2bc52134f03fcc51cb4e0f6c7cf70646b4df7dd1 |
| SHA256 | adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29 |
| SHA512 | 770822fd681a1d98afe03f6fbe5f116321b54c8e2989fb07491811fd29fca5b666f1adf4c6900823af1271e342cacc9293e9db307c4eef852d1a253b00347a81 |
memory/1608-17-0x00007FF96EA90000-0x00007FF96EBDE000-memory.dmp
memory/1608-18-0x000000001AF40000-0x000000001AF50000-memory.dmp
memory/1608-19-0x000000001D360000-0x000000001D522000-memory.dmp
memory/1608-20-0x000000001DA60000-0x000000001DF88000-memory.dmp
memory/1608-22-0x00007FF9702A0000-0x00007FF970D61000-memory.dmp