311 lines
11 KiB
Text
311 lines
11 KiB
Text
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import "pe"
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rule Check_Debugger
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Looks for both isDebuggerPresent and CheckRemoteDebuggerPresent"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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condition:
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pe.imports("kernel32.dll","CheckRemoteDebuggerPresent") and
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pe.imports("kernel32.dll","IsDebuggerPresent")
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}
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rule Check_Dlls
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for common sandbox dlls"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$dll1 = "sbiedll.dll" wide nocase ascii fullword
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$dll2 = "dbghelp.dll" wide nocase ascii fullword
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$dll3 = "api_log.dll" wide nocase ascii fullword
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$dll4 = "dir_watch.dll" wide nocase ascii fullword
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$dll5 = "pstorec.dll" wide nocase ascii fullword
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$dll6 = "vmcheck.dll" wide nocase ascii fullword
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$dll7 = "wpespy.dll" wide nocase ascii fullword
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condition:
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2 of them
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}
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import "pe"
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rule Check_DriveSize
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Rule tries to catch uses of DeviceIOControl being used to get the drive size"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$physicaldrive = "\\\\.\\PhysicalDrive0" wide ascii nocase
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$dwIoControlCode = {68 5c 40 07 00 [0-5] FF 15} //push 7405ch ; push esi (handle) then call deviceoiocontrol IOCTL_DISK_GET_LENGTH_INFO
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condition:
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pe.imports("kernel32.dll","CreateFileA") and
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pe.imports("kernel32.dll","DeviceIoControl") and
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$dwIoControlCode and
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$physicaldrive
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}
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import "pe"
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rule Check_FilePaths
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for filepaths containing popular sandbox names"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$path1 = "SANDBOX" wide ascii
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$path2 = "\\SAMPLE" wide ascii
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$path3 = "\\VIRUS" wide ascii
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condition:
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all of ($path*) and pe.imports("kernel32.dll","GetModuleFileNameA")
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}
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rule Check_Qemu_Description
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for QEMU systembiosversion key"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\Description\\System" nocase wide ascii
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$value = "SystemBiosVersion" nocase wide ascii
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$data = "QEMU" wide nocase ascii
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condition:
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all of them
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}
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rule Check_Qemu_DeviceMap
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for Qemu reg keys"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0" nocase wide ascii
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$value = "Identifier" nocase wide ascii
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$data = "QEMU" wide nocase ascii
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condition:
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all of them
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}
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import "pe"
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rule Check_UserNames
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Looks for malware checking for common sandbox usernames"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$user1 = "MALTEST" wide ascii
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$user2 = "TEQUILABOOMBOOM" wide ascii
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$user3 = "SANDBOX" wide ascii
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$user4 = "VIRUS" wide ascii
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$user5 = "MALWARE" wide ascii
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condition:
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all of ($user*) and pe.imports("advapi32.dll","GetUserNameA")
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}
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rule Check_VBox_Description
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks Vbox description reg key"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\Description\\System" nocase wide ascii
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$value = "SystemBiosVersion" nocase wide ascii
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$data = "VBOX" nocase wide ascii
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condition:
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all of them
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}
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rule Check_VBox_DeviceMap
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks Vbox registry keys"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0" nocase wide ascii
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$value = "Identifier" nocase wide ascii
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$data = "VBOX" nocase wide ascii
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condition:
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all of them
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}
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rule Check_VBox_Guest_Additions
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for the existence of the guest additions registry key"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "SOFTWARE\\Oracle\\VirtualBox Guest Additions" wide ascii nocase
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condition:
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any of them
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}
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rule Check_VBox_VideoDrivers
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for reg keys of Vbox video drivers"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\Description\\System" nocase wide ascii
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$value = "VideoBiosVersion" wide nocase ascii
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$data = "VIRTUALBOX" nocase wide ascii
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condition:
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all of them
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}
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rule Check_VmTools
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for the existence of VmTools reg key"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$tools = "SOFTWARE\\VMware, Inc.\\VMware Tools" nocase ascii wide
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condition:
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$tools
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}
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rule Check_VMWare_DeviceMap
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for the existence of VmWare Registry Keys"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$key = "HARDWARE\\DEVICEMAP\\Scsi\\Scsi Port 0\\Scsi Bus 0\\Target Id 0\\Logical Unit Id 0" wide ascii nocase
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$value = "Identifier" wide nocase ascii
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$data = "VMware" wide nocase ascii
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condition:
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all of them
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}
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import "pe"
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rule Check_Wine
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{
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meta:
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Author = "Nick Hoffman"
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Description = "Checks for the existence of Wine"
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Sample = "de1af0e97e94859d372be7fcf3a5daa5"
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strings:
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$wine = "wine_get_unix_file_name"
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condition:
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$wine and pe.imports("kernel32.dll","GetModuleHandleA")
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}
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rule LogPOS
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{
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meta:
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author = "Nick Hoffman - Morphick Security"
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description = "Detects Versions of LogPOS"
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md5 = "af13e7583ed1b27c4ae219e344a37e2b"
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strings:
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$mailslot = "\\\\.\\mailslot\\LogCC"
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$get = "GET /%s?encoding=%c&t=%c&cc=%I64d&process="
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//64A130000000 mov eax, dword ptr fs:[0x30]
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//8B400C mov eax, dword ptr [eax + 0xc]
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//8B401C mov eax, dword ptr [eax + 0x1c]
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//8B4008 mov eax, dword ptr [eax + 8]
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$sc = {64 A1 30 00 00 00 8B 40 0C 8B 40 1C 8B 40 08 }
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condition:
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$sc and 1 of ($mailslot,$get)
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}
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rule BernhardPOS {
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meta:
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author = "Nick Hoffman / Jeremy Humble"
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last_update = "2015-07-14"
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source = "Morphick Inc."
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description = "BernhardPOS Credit Card dumping tool"
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reference = "http://morphick.com/blog/2015/7/14/bernhardpos-new-pos-malware-discovered-by-morphick"
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md5 = "e49820ef02ba5308ff84e4c8c12e7c3d"
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strings:
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/*
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33C0 xor eax, eax
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83C014 add eax, 0x14
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83E814 sub eax, 0x14
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64A130000000 mov eax, dword ptr fs:[0x30]
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83C028 add eax, 0x28
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83E828 sub eax, 0x28
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8B400C mov eax, dword ptr [eax + 0xc]
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83C063 add eax, 0x63
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83E863 sub eax, 0x63
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8B4014 mov eax, dword ptr [eax + 0x14]
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83C078 add eax, 0x78
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83E878 sub eax, 0x78
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8B00 mov eax, dword ptr [eax]
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05DF030000 add eax, 0x3df
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2DDF030000 sub eax, 0x3df
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8B00 mov eax, dword ptr [eax]
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83C057 add eax, 0x57
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83E857 sub eax, 0x57
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8B4010 mov eax, dword ptr [eax + 0x10]
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83C063 add eax, 0x63
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*/
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$shellcode_kernel32_with_junk_code = { 33 c0 83 ?? ?? 83 ?? ?? 64 a1 30 00 00 00 83 ?? ?? 83 ?? ?? 8b 40 0c 83 ?? ?? 83 ?? ?? 8b 40 14 83 ?? ?? 83 ?? ?? 8b 00 ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 8b 00 83 ?? ?? 83 ?? ?? 8b 40 10 83 ?? ?? }
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$mutex_name = "OPSEC_BERNHARD"
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$build_path = "C:\\bernhard\\Debug\\bernhard.pdb"
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/*
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55 push ebp
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8BEC mov ebp, esp
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83EC50 sub esp, 0x50
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53 push ebx
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56 push esi
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57 push edi
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A178404100 mov eax, dword ptr [0x414078]
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8945F8 mov dword ptr [ebp - 8], eax
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668B0D7C404100 mov cx, word ptr [0x41407c]
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66894DFC mov word ptr [ebp - 4], cx
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8A157E404100 mov dl, byte ptr [0x41407e]
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8855FE mov byte ptr [ebp - 2], dl
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8D45F8 lea eax, dword ptr [ebp - 8]
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50 push eax
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FF150CB04200 call dword ptr [0x42b00c]
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8945F0 mov dword ptr [ebp - 0x10], eax
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C745F400000000 mov dword ptr [ebp - 0xc], 0
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EB09 jmp 0x412864
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8B45F4 mov eax, dword ptr [ebp - 0xc]
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83C001 add eax, 1
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8945F4 mov dword ptr [ebp - 0xc], eax
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8B4508 mov eax, dword ptr [ebp + 8]
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50 push eax
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FF150CB04200 call dword ptr [0x42b00c]
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3945F4 cmp dword ptr [ebp - 0xc], eax
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7D21 jge 0x412894
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8B4508 mov eax, dword ptr [ebp + 8]
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0345F4 add eax, dword ptr [ebp - 0xc]
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0FBE08 movsx ecx, byte ptr [eax]
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8B45F4 mov eax, dword ptr [ebp - 0xc]
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99 cdq
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F77DF0 idiv dword ptr [ebp - 0x10]
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0FBE5415F8 movsx edx, byte ptr [ebp + edx - 8]
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33CA xor ecx, edx
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8B4508 mov eax, dword ptr [ebp + 8]
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0345F4 add eax, dword ptr [ebp - 0xc]
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8808 mov byte ptr [eax], cl
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EBC7 jmp 0x41285b
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5F pop edi
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5E pop esi
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5B pop ebx
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8BE5 mov esp, ebp
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5D pop ebp
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*/
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$string_decode_routine = { 55 8b ec 83 ec 50 53 56 57 a1 ?? ?? ?? ?? 89 45 f8 66 8b 0d ?? ?? ?? ?? 66 89 4d fc 8a 15 ?? ?? ?? ?? 88 55 fe 8d 45 f8 50 ff ?? ?? ?? ?? ?? 89 45 f0 c7 45 f4 00 00 00 00 ?? ?? 8b 45 f4 83 c0 01 89 45 f4 8b 45 08 50 ff ?? ?? ?? ?? ?? 39 45 f4 ?? ?? 8b 45 08 03 45 f4 0f be 08 8b 45 f4 99 f7 7d f0 0f be 54 15 f8 33 ca 8b 45 08 03 45 f4 88 08 ?? ?? 5f 5e 5b 8b e5 5d }
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condition:
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any of them
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}
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rule Mozart
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{
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meta:
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author = "Nick Hoffman - Morphick Inc"
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description = "Detects samples of the Mozart POS RAM scraping utility"
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strings:
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$pdb = "z:\\Slender\\mozart\\mozart\\Release\\mozart.pdb" nocase wide ascii
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$output = {67 61 72 62 61 67 65 2E 74 6D 70 00}
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$service_name = "NCR SelfServ Platform Remote Monitor" nocase wide ascii
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$service_name_short = "NCR_RemoteMonitor"
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$encode_data = {B8 08 10 00 00 E8 ?? ?? ?? ?? A1 ?? ?? ?? ?? 53 55 8B AC 24 14 10 00 00 89 84 24 0C 10 00 00 56 8B C5 33 F6 33 DB 8D 50 01 8D A4 24 00 00 00 00 8A 08 40 84 C9 ?? ?? 2B C2 89 44 24 0C ?? ?? 8B 94 24 1C 10 00 00 57 8B FD 2B FA 89 7C 24 10 ?? ?? 8B 7C 24 10 8A 04 17 02 86 E0 BA 40 00 88 02 B8 ?? ?? ?? ?? 46 8D 78 01 8D A4 24 00 00 00 00 8A 08 40 84 C9 ?? ?? 2B C7 3B F0 ?? ?? 33 F6 8B C5 43 42 8D 78 01 8A 08 40 84 C9 ?? ?? 2B C7 3B D8 ?? ?? 5F 8B B4 24 1C 10 00 00 8B C5 C6 04 33 00 8D 50 01 8A 08 40 84 C9 ?? ?? 8B 8C 24 20 10 00 00 2B C2 51 8D 54 24 14 52 50 56 E8 ?? ?? ?? ?? 83 C4 10 8B D6 5E 8D 44 24 0C 8B C8 5D 2B D1 5B 8A 08 88 0C 02 40 84 C9 ?? ?? 8B 8C 24 04 10 00 00 E8 ?? ?? ?? ?? 81 C4 08 10 00 00}
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condition:
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any of ($pdb, $output, $encode_data) or
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all of ($service*)
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}
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