Resubmissions

23-03-2023 02:24

230323-cvr2yada67 7

20-02-2023 23:48

230220-3tfwdsda52 10

Analysis

  • max time kernel
    55s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-02-2023 23:48

General

  • Target

    EliStarA.exe

  • Size

    1.7MB

  • MD5

    6b8dcb09a6f8e836b5dcc600d11c6223

  • SHA1

    b0a1582b9e9871064afae5cb6b1d369599506763

  • SHA256

    11aaa12e58f39f192b4f66e56cd0e343d73b69a48dc77a6dfb936483de120152

  • SHA512

    feb8bd04778b29efc9b0128dbfd9562368eb825a560dc610abed6a73de1dc7bd33e5e198b439b36828d0a66d4657e354d4a65646141ad3425bed6fd74cb7fcae

  • SSDEEP

    49152:lJCDpfmhr2qIhBCwb8lIgwylCJHXv5y7lE8X:6HB/b8KgZA5E

Malware Config

Signatures

  • DMA Locker

    Ransomware family with some advanced features, like encryption of unmapped network shares.

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Locky

    Ransomware strain released in 2016, with advanced features like anti-analysis.

  • Locky (Osiris variant)

    Variant of the Locky ransomware seen in the wild since early 2017.

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Modifies system executable filetype association 2 TTPs 8 IoCs
  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Drops file in Drivers directory 22 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Drops startup file 64 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 8 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 25 IoCs
  • Drops file in Windows directory 64 IoCs
  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Modifies registry class 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EliStarA.exe
    "C:\Users\Admin\AppData\Local\Temp\EliStarA.exe"
    1⤵
    • Modifies system executable filetype association
    • Adds policy Run key to start application
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Drops startup file
    • Adds Run key to start application
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\SYSTEM32\cmd.exe
      cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\com2.{62D8ED13-C9D0-4CE8-A914-47DD628FB1B0}\*.*" /a /q"
      2⤵
        PID:1208
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\com2.{62D8ED13-C9D0-4CE8-A914-47DD628FB1B0}""
        2⤵
          PID:1456
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\*.*" /a /q"
          2⤵
            PID:5104
          • C:\Windows\SYSTEM32\cmd.exe
            cmd /c "rd \\.\C:\con.sys"
            2⤵
              PID:3500
            • C:\Windows\SYSTEM32\cmd.exe
              cmd /c "rd \\.\C:\con.usb"
              2⤵
                PID:3864
              • C:\Windows\SYSTEM32\cmd.exe
                cmd /c "del \\.\C:\con.usb\*.* /a /q"
                2⤵
                  PID:2988
                • C:\Windows\SYSTEM32\cmd.exe
                  cmd /c "rd \\.\C:\con.ini"
                  2⤵
                    PID:5064
                  • C:\Windows\SYSTEM32\cmd.exe
                    cmd /c "del \\.\C:\con.ini\*.* /a /q"
                    2⤵
                      PID:2268
                    • C:\Windows\SYSTEM32\cmd.exe
                      cmd /c "del \\.\C:\con.sys\*.* /a /q"
                      2⤵
                        PID:3508
                      • C:\Windows\SYSTEM32\cmd.exe
                        cmd /c "rd "\\.\C:\WINDOWS\FONTS\COM4.{241D7C96-F8BF-4F85-B01F-E2B043341A4B}""
                        2⤵
                          PID:4128
                        • C:\Windows\SYSTEM32\cmd.exe
                          cmd /c "del "\\.\C:\WINDOWS\FONTS\COM4.{241D7C96-F8BF-4F85-B01F-E2B043341A4B}\*.*" /a /q"
                          2⤵
                            PID:1784
                          • C:\Windows\SYSTEM32\cmd.exe
                            cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\lpt7.{05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}""
                            2⤵
                              PID:3556
                            • C:\Windows\SYSTEM32\cmd.exe
                              cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\lpt7.{05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}\*.*" /a /q"
                              2⤵
                                PID:4736
                              • C:\Windows\SYSTEM32\cmd.exe
                                cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\lpt6.{17cd9488-1228-4b2f-88ce-4298e93e0966}""
                                2⤵
                                  PID:1904
                                • C:\Windows\SYSTEM32\cmd.exe
                                  cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\lpt6.{17cd9488-1228-4b2f-88ce-4298e93e0966}\*.*" /a /q"
                                  2⤵
                                    PID:3540
                                  • C:\Windows\SYSTEM32\cmd.exe
                                    cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\lpt3.{1D2680C9-0E2A-469d-B787-065558BC7D43}""
                                    2⤵
                                      PID:4176
                                    • C:\Windows\SYSTEM32\cmd.exe
                                      cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\lpt3.{1D2680C9-0E2A-469d-B787-065558BC7D43}\*.*" /a /q"
                                      2⤵
                                        PID:3096
                                      • C:\Windows\SYSTEM32\cmd.exe
                                        cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\lpt2.{20D04FE0-3AEA-1069-A2D8-08002B30309D}""
                                        2⤵
                                          PID:1952
                                        • C:\Windows\SYSTEM32\cmd.exe
                                          cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\lpt2.{20D04FE0-3AEA-1069-A2D8-08002B30309D}\*.*" /a /q"
                                          2⤵
                                            PID:1256
                                          • C:\Windows\SYSTEM32\cmd.exe
                                            cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}""
                                            2⤵
                                              PID:1196
                                            • C:\Windows\SYSTEM32\cmd.exe
                                              cmd /c "rd "\\.\C:\Users\Admin\AppData\Roaming\com4.{05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}""
                                              2⤵
                                                PID:4480
                                              • C:\Windows\SYSTEM32\cmd.exe
                                                cmd /c "del "\\.\C:\Users\Admin\AppData\Roaming\com4.{05d7b0f4-2121-4eff-bf6b-ed3f69b894d9}\*.*" /a /q"
                                                2⤵
                                                  PID:672

                                              Network

                                              MITRE ATT&CK Matrix ATT&CK v6

                                              Initial Access

                                              Replication Through Removable Media

                                              1
                                              T1091

                                              Persistence

                                              Change Default File Association

                                              1
                                              T1042

                                              Registry Run Keys / Startup Folder

                                              3
                                              T1060

                                              Defense Evasion

                                              Modify Registry

                                              5
                                              T1112

                                              Discovery

                                              Query Registry

                                              1
                                              T1012

                                              Lateral Movement

                                              Replication Through Removable Media

                                              1
                                              T1091

                                              Replay Monitor

                                              Loading Replay Monitor...

                                              Downloads

                                              • memory/548-133-0x0000000000400000-0x00000000005BF000-memory.dmp
                                                Filesize

                                                1.7MB

                                              • memory/548-140-0x0000000000400000-0x00000000005BF000-memory.dmp
                                                Filesize

                                                1.7MB

                                              • memory/548-141-0x0000000000400000-0x00000000005BF000-memory.dmp
                                                Filesize

                                                1.7MB

                                              • memory/548-142-0x0000000000400000-0x00000000005BF000-memory.dmp
                                                Filesize

                                                1.7MB

                                              • memory/548-145-0x0000000000400000-0x00000000005BF000-memory.dmp
                                                Filesize

                                                1.7MB