Analysis
- max time kernel
151s - max time network
151s - platform
windows7_x64 - resource
win7-en-20211208 - submitted
22/01/2022, 00:06
General
- Target SKM-97116373-PDF.exe
- Size 322KB
- Sample220122-adr99seegl
- SHA256 d6fce7f4f6a8c7c7ec013bd177f42ab0a9ef8d8ce6f505245ea09e41d33201e0
Malware Config
Extracted
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xloader
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2.5
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uar3
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sgadvocats.com
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mjscannabus.com
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hilldaley.com
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ksdollhouse.com
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hotgiftboutique.com
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purebloodsmeet.com
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relaunched.info
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cap-glove.com
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productcollection.store
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fulikyy.xyz
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remoteaviationjobs.com
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bestcleancrystal.com
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virtualorganizationpartner.com
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bookgocar.com
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hattuafhv.quest
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makonigroup.com
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officecom-myaccount.com
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malgorzata-lac.com
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e-learningeducators.com
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hygilaur.com
Signatures
- Xloader
Xloader is a rebranded version of Formbook malware.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- Xloader Payload 3 IoCs
- Deletes itself 1 IoCs
- Loads dropped DLL 1 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 31 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\SKM-97116373-PDF.exe"C:\Users\Admin\AppData\Local\Temp\SKM-97116373-PDF.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\SKM-97116373-PDF.exe"C:\Users\Admin\AppData\Local\Temp\SKM-97116373-PDF.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wlanext.exe"C:\Windows\SysWOW64\wlanext.exe"2⤵
- Suspicious use of SetThreadContext
- 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:\Users\Admin\AppData\Local\Temp\SKM-97116373-PDF.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/544-61-0x0000000000400000-0x0000000000429000-memory.dmp
memory/544-56-0x0000000000400000-0x0000000000429000-memory.dmp
memory/544-58-0x0000000000840000-0x0000000000B43000-memory.dmp
memory/544-59-0x00000000002C0000-0x00000000002D1000-memory.dmp
memory/544-62-0x0000000000310000-0x0000000000321000-memory.dmp
memory/584-64-0x00000000004C0000-0x00000000004D6000-memory.dmp
memory/584-65-0x00000000000C0000-0x00000000000E9000-memory.dmp
memory/584-66-0x0000000002000000-0x0000000002303000-memory.dmp
memory/584-67-0x0000000000570000-0x0000000000600000-memory.dmp
memory/1436-60-0x0000000005EB0000-0x0000000005F6B000-memory.dmp
memory/1436-63-0x0000000005F80000-0x0000000006039000-memory.dmp
memory/1436-68-0x00000000066C0000-0x0000000006757000-memory.dmp
memory/1916-54-0x0000000075F21000-0x0000000075F23000-memory.dmp