Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
16/06/2022, 09:50
General
- Target SR20220600525003,pdf.exe
- Size 236KB
- Sample220616-lvbvdsgdb6
- SHA256 00468491177bab4d715685cc174538ff0a3c15cdf0b679c7d163b89e3b8d2421
Malware Config
Extracted
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xloader
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2.6
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tn61
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ryliehorrall.art
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mesdco.net
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street-art-ink.com
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sepetcin.com
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stilghar.com
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hawaiipooltiles.com
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fuerst-von-falkennest.com
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totalvirtue.com
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xdk0blc0tqy6a7.life
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zootowngravel.com
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kreditkarten-optionde.com
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6888tlbb.xyz
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albertakleekai.com
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travelnurseinfofinder3.life
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valleyinnswat.com
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secure-remove-devices.com
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digitalswamy.com
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www112casinova.com
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medifasttrd.com
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distritoxermar.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Xloader
Xloader is a rebranded version of Formbook malware.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
- Xloader Payload 4 IoCs
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 2 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Drops file in Program Files directory 4 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 48 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 10 IoCs
- Suspicious use of WriteProcessMemory 24 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\SR20220600525003,pdf.exe"C:\Users\Admin\AppData\Local\Temp\SR20220600525003,pdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\SysWOW64\explorer.exe"2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"3⤵
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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C:\Program Files (x86)\Hv6x8f\mfcqfsdlb.exe"C:\Program Files (x86)\Hv6x8f\mfcqfsdlb.exe"2⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mfcqfsdlb.exe
mfcqfsdlb.exe
DB1
DB1
memory/1032-146-0x0000000008350000-0x0000000008443000-memory.dmp
memory/1032-136-0x0000000003160000-0x000000000328D000-memory.dmp
memory/1032-144-0x0000000008350000-0x0000000008443000-memory.dmp
memory/1516-138-0x0000000000400000-0x000000000042B000-memory.dmp
memory/1516-132-0x0000000000400000-0x000000000042B000-memory.dmp
memory/1516-134-0x0000000001500000-0x000000000184A000-memory.dmp
memory/1516-135-0x00000000013B0000-0x00000000013C1000-memory.dmp
memory/3008-141-0x0000000000E00000-0x0000000000E2B000-memory.dmp
memory/3008-145-0x0000000000E00000-0x0000000000E2B000-memory.dmp
memory/3008-143-0x0000000003000000-0x0000000003090000-memory.dmp
memory/3008-142-0x00000000032A0000-0x00000000035EA000-memory.dmp
memory/3008-140-0x0000000000EE0000-0x0000000001313000-memory.dmp
memory/4116-130-0x0000000000A20000-0x0000000000A5C000-memory.dmp