Analysis
- max time kernel
153s - max time network
152s - platform
windows7_x64 - resource
win7v20210408 - submitted
02/09/2021, 14:08
General
- Target 009547789723_pdf.exe
- Size 696KB
- Sample210902-rfmk8sdcak
- SHA256 a49278e32de8c758012e44c3519591a7997b261e453827ff7b11158786563430
Malware Config
Extracted
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xloader
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2.3
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zrmt
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http://www.xcwwjzsb.com/zrmt/
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wesmerecountryclub.com
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wisdomlenstransmedia.info
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ostethy.com
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zhclgm.com
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rafiten.com
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miteccloud.com
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collagen6.com
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94chuyu.com
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coffeeandsupplycompany.com
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siestone.com
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salonandspaexperts.com
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irnefzo.info
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playback-theatre.com
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ecomportableph.com
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parkplatinum.com
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1963tc.com
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zaubers.com
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getfitnesssupplement.com
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lossolesmarketing.com
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blueprintartco.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
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\009547789723_pdf.exe"C:\Users\Admin\AppData\Local\Temp\009547789723_pdf.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XqTvBmQZW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp26C2.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\009547789723_pdf.exe"C:\Users\Admin\AppData\Local\Temp\009547789723_pdf.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Windows\SysWOW64\msdt.exe"C:\Windows\SysWOW64\msdt.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\009547789723_pdf.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/816-78-0x0000000002080000-0x000000000210F000-memory.dmp
memory/816-77-0x0000000002350000-0x0000000002653000-memory.dmp
memory/816-75-0x00000000000C0000-0x00000000000E8000-memory.dmp
memory/816-74-0x00000000006F0000-0x00000000007E4000-memory.dmp
memory/816-73-0x0000000076641000-0x0000000076643000-memory.dmp
memory/1156-70-0x0000000000320000-0x0000000000330000-memory.dmp
memory/1156-69-0x00000000008D0000-0x0000000000BD3000-memory.dmp
memory/1156-67-0x0000000000400000-0x0000000000428000-memory.dmp
memory/1208-71-0x0000000006C20000-0x0000000006D59000-memory.dmp
memory/1208-79-0x0000000007340000-0x00000000074AE000-memory.dmp
memory/1820-60-0x0000000000030000-0x0000000000031000-memory.dmp
memory/1820-65-0x0000000000810000-0x000000000083A000-memory.dmp
memory/1820-64-0x0000000004E30000-0x0000000004E8E000-memory.dmp
memory/1820-63-0x00000000004E0000-0x00000000004F6000-memory.dmp
memory/1820-62-0x0000000004850000-0x0000000004851000-memory.dmp