Analysis Overview
Threat Level: Known bad
The file https://cdn.discordapp.com/attachments/1221895306933833802/1221898554881212558/Client-built.rar?ex=661440b5&is=6601cbb5&hm=e16a2b4f69f372f8313a451d1f5bbdb43f419fd93e13b4647f2b56f9f9616461& was found to be: Known bad.
Malicious Activity Summary
Discord RAT
Executes dropped EXE
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Checks processor information in registry
NTFS ADS
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Checks SCSI registry key(s)
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-25 19:09
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-25 19:09
Reported
2024-03-25 19:10
Platform
win10v2004-20240226-en
Max time kernel
46s
Max time network
37s
Command Line
Signatures
Discord RAT
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Downloads\Client-built\Client-built.exe | N/A |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000_Classes\Local Settings | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
NTFS ADS
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\Downloads\Client-built.rar:Zone.Identifier | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Program Files\7-Zip\7zG.exe | N/A |
| Token: 35 | N/A | C:\Program Files\7-Zip\7zG.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Program Files\7-Zip\7zG.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Program Files\7-Zip\7zG.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\Downloads\Client-built\Client-built.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| N/A | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| N/A | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
| N/A | N/A | C:\Program Files\Mozilla Firefox\firefox.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "https://cdn.discordapp.com/attachments/1221895306933833802/1221898554881212558/Client-built.rar?ex=661440b5&is=6601cbb5&hm=e16a2b4f69f372f8313a451d1f5bbdb43f419fd93e13b4647f2b56f9f9616461&"
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url https://cdn.discordapp.com/attachments/1221895306933833802/1221898554881212558/Client-built.rar?ex=661440b5&is=6601cbb5&hm=e16a2b4f69f372f8313a451d1f5bbdb43f419fd93e13b4647f2b56f9f9616461&
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.0.1577052757\1668171635" -parentBuildID 20221007134813 -prefsHandle 1856 -prefMapHandle 1848 -prefsLen 20749 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {4d34ca7b-971c-46bd-aabc-ab232ddf3f9b} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 1952 1a61b4db458 gpu
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.1.1661933245\1301339035" -parentBuildID 20221007134813 -prefsHandle 2404 -prefMapHandle 2400 -prefsLen 21565 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {b85625ac-c9b0-4495-b732-3dc743303eca} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 2428 1a60e5ece58 socket
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.2.1232387339\920252788" -childID 1 -isForBrowser -prefsHandle 3280 -prefMapHandle 3276 -prefsLen 21668 -prefMapSize 233444 -jsInitHandle 1152 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {9f5ec2cd-4cc9-4dd0-af4b-57600ecc8be3} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 3096 1a61eee5758 tab
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.3.770715586\1806165305" -childID 2 -isForBrowser -prefsHandle 3640 -prefMapHandle 3636 -prefsLen 26066 -prefMapSize 233444 -jsInitHandle 1152 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {3ac22b2d-1820-4338-811c-692dedaa0ee4} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 3428 1a61d8b7a58 tab
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.4.1844973132\208204205" -childID 3 -isForBrowser -prefsHandle 5388 -prefMapHandle 4392 -prefsLen 26340 -prefMapSize 233444 -jsInitHandle 1152 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {3102cadd-0edc-4ed8-9ee5-14c3ab7f6d38} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 5408 1a60e569658 tab
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.5.598913774\1512322779" -childID 4 -isForBrowser -prefsHandle 5552 -prefMapHandle 5556 -prefsLen 26340 -prefMapSize 233444 -jsInitHandle 1152 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {3aa83c0a-236d-4af9-8681-c59d6f5bc9b3} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 5544 1a62219f458 tab
C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4432.6.1095825991\809794408" -childID 5 -isForBrowser -prefsHandle 5512 -prefMapHandle 5516 -prefsLen 26340 -prefMapSize 233444 -jsInitHandle 1152 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {2868ae3b-19a4-43a0-a9b6-f9f6e2773f81} 4432 "\\.\pipe\gecko-crash-server-pipe.4432" 5744 1a62219fd58 tab
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Program Files\7-Zip\7zG.exe
"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\Client-built\" -spe -an -ai#7zMap16888:86:7zEvent16521
C:\Users\Admin\Downloads\Client-built\Client-built.exe
"C:\Users\Admin\Downloads\Client-built\Client-built.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:55499 | tcp | |
| US | 8.8.8.8:53 | cdn.discordapp.com | udp |
| US | 8.8.8.8:53 | contile.services.mozilla.com | udp |
| US | 8.8.8.8:53 | content-signature-2.cdn.mozilla.net | udp |
| US | 162.159.133.233:443 | cdn.discordapp.com | tcp |
| US | 8.8.8.8:53 | cdn.discordapp.com | udp |
| US | 34.117.237.239:443 | contile.services.mozilla.com | tcp |
| US | 8.8.8.8:53 | contile.services.mozilla.com | udp |
| US | 8.8.8.8:53 | shavar.services.mozilla.com | udp |
| US | 8.8.8.8:53 | cdn.discordapp.com | udp |
| US | 8.8.8.8:53 | contile.services.mozilla.com | udp |
| US | 8.8.8.8:53 | push.services.mozilla.com | udp |
| US | 8.8.8.8:53 | firefox.settings.services.mozilla.com | udp |
| US | 52.13.152.141:443 | shavar.services.mozilla.com | tcp |
| US | 8.8.8.8:53 | shavar.prod.mozaws.net | udp |
| US | 8.8.8.8:53 | autopush.prod.mozaws.net | udp |
| US | 8.8.8.8:53 | shavar.prod.mozaws.net | udp |
| US | 8.8.8.8:53 | prod.remote-settings.prod.webservices.mozgcp.net | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 233.133.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | autopush.prod.mozaws.net | udp |
| US | 34.149.100.209:443 | prod.remote-settings.prod.webservices.mozgcp.net | tcp |
| US | 8.8.8.8:53 | prod.remote-settings.prod.webservices.mozgcp.net | udp |
| US | 34.107.243.93:443 | autopush.prod.mozaws.net | tcp |
| US | 162.159.133.233:443 | cdn.discordapp.com | udp |
| US | 34.160.144.191:443 | content-signature-2.cdn.mozilla.net | tcp |
| US | 8.8.8.8:53 | prod.content-signature-chains.prod.webservices.mozgcp.net | udp |
| US | 8.8.8.8:53 | prod.content-signature-chains.prod.webservices.mozgcp.net | udp |
| US | 8.8.8.8:53 | 197.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 141.152.13.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:55507 | tcp | |
| US | 8.8.8.8:53 | 241.154.82.20.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 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | gateway.discord.gg | udp |
| US | 162.159.136.234:443 | gateway.discord.gg | tcp |
| US | 8.8.8.8:53 | 234.136.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\datareporting\glean\pending_pings\7dc57f6b-3049-444e-a94c-e41fee7c672a
| MD5 | 496c98147e960b26fd82299da1db5f59 |
| SHA1 | 8178ab43d6bbc41ce1e4555dc59fbe141327150f |
| SHA256 | 9452fe018f33fa9af3c97399acab7b0bf1287e49e0b160c4b76c877e8004243b |
| SHA512 | 8abf16ead568adf7d4421518ed8630ea98fde5a5f39f4e004a096978701e5b90044e7a9265c44e0b5c40ac1e4704eaa397beba4dbfe263d0921ae002520d8f4a |
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\datareporting\glean\pending_pings\ca2e6c91-e6c2-4970-b465-ad2be9daf8f5
| MD5 | fceb4dfc1b19de4990e87460f6271c6c |
| SHA1 | 24254531e8aa5a8f616cb4734551d37009df0410 |
| SHA256 | 37021217278793751ebbeee9dcab00baa5f8fa9b399a86bf93b3eacd85ab2c03 |
| SHA512 | 17c6adcea7bf4fb74c75139552d7ee144e5071038e5c969aee22df18538bcd05aaa5886f8def709802184976d48c527cdde97b0f135c2ec22c453bbe2f0fdb72 |
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\datareporting\glean\db\data.safe.bin
| MD5 | 8b74f0369b5414ad0603a42eca47d72f |
| SHA1 | 3a8bdd9428e635f6115e11579facaf13afc41994 |
| SHA256 | 953d25d94989a86099c68ea542074512f3eb5736f0a9a49cb1c080a837f34297 |
| SHA512 | b237cacda7647b93cebd7d43938b0f2f0fa3f63f20e6da27670d0b7ed472e6fa131fb0277261a95c47062bb2e6020a57a0dc7e58c6963c5bb8130f3726e37199 |
C:\Users\Admin\Downloads\fviFdtjZ.rar.part
| MD5 | 9add42f59c08775d4837d367ad6ab39d |
| SHA1 | 178a554579ae84da18889444b7649695f85089a1 |
| SHA256 | f148119bf8c8ed3d9006b25c1ed94ff56a6a8c6506818f5c9e939dac085991f0 |
| SHA512 | deb273b9a8205632b71f1e31c18ea6090b711356f4d4148be3cd4db70c3459b174f9be49c1a021d0b71d4e23257a284da3e8ca20a150938fae9b61c33835a2d4 |
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\prefs.js
| MD5 | 14954438b03539a1344050c31f6235d4 |
| SHA1 | c2bc51be3a7c9d29aa58d5def238be22c2f72f30 |
| SHA256 | 4f42b2251ae795745091693dd5636e05c4749393f11e651c0a64f1b9d92740c5 |
| SHA512 | 68985ad323491644f4a7b085c2a9cf0a15bda063e5c5a5d1d88c731a3dc2fd0938903b4a7c4f3f7b6a93eddd33e28439e6fc7044055563fea459b9dee67a78cb |
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\prefs.js
| MD5 | 58ce08cd9930c4c2be1b3af7137b1b07 |
| SHA1 | cccd94d643cfb765837514f4ee4bf08aadbbe1a2 |
| SHA256 | 9a2949c02b2c7638e7ac9efe66eab6a192bc91e5e34c5c74468da3d2d59a61ba |
| SHA512 | 1f53707fbf7baac7662904f6466d731f1245901cde70afaeac160ab5c7b0990c57a5c9dfa70bd70eeaeb99590635d49e43425ea301528a0cd9ddbc7c8ffb7f43 |
C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\xh4b7nwe.default-release\sessionstore-backups\recovery.jsonlz4
| MD5 | 4b1375476c90d40fefae33dd5d14e4dc |
| SHA1 | 20b11313940517e4d7dc4e823e6d181e16fc60b8 |
| SHA256 | 347864bb12f08057da0827efe8714be15d31d60fc3759e52c62fab2fb3eb88f5 |
| SHA512 | dd2bc6e389317bd5c1c5023c70649130aaf9097ff91af44ed3d575982806b0930a7ecb812b9ffbe23b77d6e9d5cef90303ab87d51818ac317ac66a158d7988a9 |
C:\Users\Admin\Downloads\Client-built\Client-built.exe
| MD5 | c457f37d56b3dcae201872b6db4920e4 |
| SHA1 | 274486769ff007717b29bb05512ddbe8f264b8dd |
| SHA256 | d9b2081ba5292d8ddc0fa95e031a84be520c07aba878e169a0d3c8be10048a16 |
| SHA512 | d14328d8272bc2421606ee51336c9b10deaa514352751e9ee6827e259f078e87f58bbcf13930cb480a158fce191c99c1b4fb99172b1dc39991b2a95be529441a |
memory/5712-121-0x000001A913BD0000-0x000001A913BE8000-memory.dmp
memory/5712-122-0x000001A92E270000-0x000001A92E432000-memory.dmp
memory/5712-124-0x000001A92E150000-0x000001A92E160000-memory.dmp
memory/5712-123-0x00007FFDE7A20000-0x00007FFDE84E1000-memory.dmp
memory/5712-125-0x000001A92EAB0000-0x000001A92EFD8000-memory.dmp
memory/6016-130-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-131-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-132-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-136-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-137-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-139-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-140-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-141-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-142-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/6016-138-0x00000251FE560000-0x00000251FE561000-memory.dmp
memory/5712-143-0x00007FFDE7A20000-0x00007FFDE84E1000-memory.dmp
memory/5712-145-0x000001A92E150000-0x000001A92E160000-memory.dmp