Resubmissions
12-11-2021 18:04
211112-wnzb8aahhm 1019-11-2020 10:08
201119-rhwlt38jrx 1018-11-2020 17:26
201118-htd4fq29va 10Analysis
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max time kernel
1311s -
max time network
1326s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
19-11-2020 10:08
General
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Target
Archive.zip__ccacaxs2tbz2t6ob3e.exe
Score
8/10
Malware Config
Signatures
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Creates new service(s) 1 TTPs
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Downloads MZ/PE file
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Executes dropped EXE 7 IoCs
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Loads dropped DLL 64 IoCs
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops desktop.ini file(s) 2 IoCs
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory 4 IoCs
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Drops file in Program Files directory 64 IoCs
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Drops file in Windows directory 7 IoCs
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Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies Internet Explorer settings 1 TTPs 12 IoCs
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Modifies Internet Explorer start page 1 TTPs 1 IoCs
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Modifies data under HKEY_USERS 54 IoCs
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Modifies system certificate store 2 TTPs 5 IoCs
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Suspicious behavior: EnumeratesProcesses 15 IoCs
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Suspicious use of AdjustPrivilegeToken 15 IoCs
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Suspicious use of FindShellTrayWindow 1 IoCs
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Suspicious use of SendNotifyMessage 1 IoCs
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Suspicious use of WriteProcessMemory 53 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe"C:\Users\Admin\AppData\Local\Temp\Archive.zip__ccacaxs2tbz2t6ob3e.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Temp\WCInstaller.exeC:\Users\Admin\AppData\Local\Temp\Temp\WCInstaller.exe --silent --partner=AE190201 --homepage=1 --search=1 --campaign=2922⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7zS0BD36935\WebCompanionInstaller.exe.\WebCompanionInstaller.exe --partner=AE190201 --campaign=292 --version=7.0.2354.4185 --prod --silent --partner=AE190201 --homepage=1 --search=1 --campaign=2923⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\sc.exe"sc.exe" Create "WCAssistantService" binPath= "C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe" DisplayName= "WC Assistant" start= auto4⤵
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C:\Windows\SysWOW64\sc.exe"sc.exe" failure WCAssistantService reset= 30 actions= restart/600004⤵
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C:\Windows\SysWOW64\sc.exe"sc.exe" description "WCAssistantService" "Ad-Aware Web Companion Internet security service"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C netsh http add urlacl url=http://+:9007/ user=Everyone4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh http add urlacl url=http://+:9007/ user=Everyone5⤵
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C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.exe"C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.exe" --silent --install --geo=4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies Internet Explorer start page
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jd2_ow1z.cmdline"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA49E.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCA49D.tmp"6⤵
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C:\Program Files (x86)\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe"C:\Program Files (x86)\Lavasoft\Web Companion\Application\Ad-Aware Web Companion.exe" {0633EE93-D776-472f-A0FF-E1416B8B2E3A}5⤵
- Executes dropped EXE
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C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.exe"C:\Program Files (x86)\Lavasoft\Web Companion\Application\WebCompanion.exe" --silent --afterinstall4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rjgxmwqy.cmdline"5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA66B.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCA66A.tmp"6⤵
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C:\Users\Admin\AppData\Local\Temp\349C.tmp.exeC:\Users\Admin\AppData\Local\Temp\349C.tmp.exe2⤵
- Executes dropped EXE
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C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe"C:\Program Files (x86)\Lavasoft\Web Companion\Application\Lavasoft.WCAssistant.WinService.exe"1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C netsh http add urlacl url=http://+:9007/ user=Everyone2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh http add urlacl url=http://+:9007/ user=Everyone3⤵
- Modifies data under HKEY_USERS
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C:\Windows\Microsoft.NET\Framework64\v3.5\csc.exe"C:\Windows\Microsoft.NET\Framework64\v3.5\csc.exe" /noconfig /fullpaths @"C:\Windows\TEMP\q-9f8yo_.cmdline"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Windows\TEMP\RESBFA8.tmp" "c:\Windows\Temp\CSCBFA7.tmp"3⤵
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C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exeC:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
6.9MB
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Filesize
4KB
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Filesize
64KB
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Filesize
9.6MB
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Filesize
9.6MB
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Filesize
4KB
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Filesize
6.9MB
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