Analysis
- max time kernel
150s - max time network
150s - platform
windows7_x64 - resource
win7v20201028 - submitted
26/02/2021, 13:42
General
- Target remittanceslip_pdf.exe
- Size 212KB
- Sample210226-667vefvpvx
- SHA256 6e7f8ff3782bb90e21df7fd4f7b61369e10b3965cde2cab0c24d6876809afb4e
Malware Config
Extracted
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formbook
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http://www.rayyanu.com/cu6o/
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gardeniabotanics.com
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millionairenursesociety.com
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moronimatteo.com
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856379910.xyz
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grigparis.com
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sensifeet.com
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easyhomediytech.com
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code2coffee.com
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hallowsevecandles.com
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lanyardsbylexi.com
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polugroup.com
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esporaurbana.com
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15tothecity.com
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confidentplans.com
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myecosupply.com
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digigro.net
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dividend.zone
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socialcapitalllc.com
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dlpm104.com
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espressdelivery.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Xloader
Xloader is a rebranded version of Formbook malware.
- Xloader Payload 2 IoCs
- Deletes itself 1 IoCs
- Loads dropped DLL 2 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 35 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of WriteProcessMemory 13 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\remittanceslip_pdf.exe"C:\Users\Admin\AppData\Local\Temp\remittanceslip_pdf.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\remittanceslip_pdf.exe"C:\Users\Admin\AppData\Local\Temp\remittanceslip_pdf.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wininit.exe"C:\Windows\SysWOW64\wininit.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\remittanceslip_pdf.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/788-15-0x0000000000080000-0x00000000000A9000-memory.dmp
memory/788-17-0x00000000007D0000-0x0000000000860000-memory.dmp
memory/788-16-0x0000000002020000-0x0000000002323000-memory.dmp
memory/788-14-0x0000000000870000-0x000000000088A000-memory.dmp
memory/1236-18-0x0000000006D80000-0x0000000006EF6000-memory.dmp
memory/1236-9-0x0000000005110000-0x00000000051D4000-memory.dmp
memory/1236-11-0x0000000006C10000-0x0000000006D73000-memory.dmp
memory/1888-2-0x0000000075781000-0x0000000075783000-memory.dmp
memory/1960-6-0x0000000000400000-0x0000000000429000-memory.dmp
memory/1960-10-0x0000000000390000-0x00000000003A1000-memory.dmp
memory/1960-8-0x0000000000340000-0x0000000000351000-memory.dmp
memory/1960-7-0x0000000000900000-0x0000000000C03000-memory.dmp