Resubmissions

19-10-2022 21:03

221019-zv2byagfgk 10

19-10-2022 20:57

221019-zr17rsgee8 10

Analysis

  • max time kernel
    122s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-10-2022 20:57

General

  • Target

    2e87dd5a57f8e99a4bbe841354a61508a3f203650b123f93f2c54c387edc2e91.exe

  • Size

    2.3MB

  • MD5

    bda4570095d3d36645df2753e4207a99

  • SHA1

    222b33e246b3459ffe9ba18fab26ab4fe8ae23bf

  • SHA256

    2e87dd5a57f8e99a4bbe841354a61508a3f203650b123f93f2c54c387edc2e91

  • SHA512

    d0c031f37d3e5c8f6a63311db079519ef7d8af005cccd19f65d10ac19233eb982d287703dce97ae429c977b4c56584ae819f32527ac61b5db700ee7c8cdf9b9b

  • SSDEEP

    49152:rUUYZLKOuuwlWOZsE/KrPnrjFjUbPY4vAzmhSGaM0RtZxsoVeY:rUU8Lalhm7rPVjUzYYAzmIGaM0bZxsj

Malware Config

Signatures

  • Detecting the common Go functions and variables names used by Snatch ransomware 3 IoCs
  • Snatch Ransomware

    Ransomware family generally distributed through RDP bruteforce attacks.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

  • UPX packed file 3 IoCs

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

  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2e87dd5a57f8e99a4bbe841354a61508a3f203650b123f93f2c54c387edc2e91.exe
    "C:\Users\Admin\AppData\Local\Temp\2e87dd5a57f8e99a4bbe841354a61508a3f203650b123f93f2c54c387edc2e91.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\wgpmwobeclisexmtrey.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Windows\SysWOW64\sc.exe
        SC QUERY
        3⤵
        • Launches sc.exe
        PID:1760
      • C:\Windows\SysWOW64\findstr.exe
        FINDSTR SERVICE_NAME
        3⤵
          PID:1520
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c C:\Users\Admin\AppData\Local\Temp\owbgsyxqfweqseyvbye.bat
        2⤵
          PID:1360
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\awafykxmvtlffuylokwx.bat
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1328
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1060
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\rwuiwebofhrwrcweqia.bat
          2⤵
            PID:1648
        • C:\Windows\system32\NOTEPAD.EXE
          "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\HOW TO RESTORE YOUR FILES.TXT
          1⤵
            PID:1656
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1744

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\awafykxmvtlffuylokwx.bat

            Filesize

            47B

            MD5

            2202e846ba05d7f0bb20adbc5249c359

            SHA1

            4115d2d15614503456aea14db61d71a756cc7b8c

            SHA256

            0965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f

            SHA512

            cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7

          • C:\Users\Admin\AppData\Local\Temp\wgpmwobeclisexmtrey.bat

            Filesize

            43B

            MD5

            55310bb774fff38cca265dbc70ad6705

            SHA1

            cb8d76e9fd38a0b253056e5f204dab5441fe932b

            SHA256

            1fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d

            SHA512

            40e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4

          • C:\Users\Admin\Desktop\HOW TO RESTORE YOUR FILES.TXT

            Filesize

            1KB

            MD5

            7f6ad1a83c4033504937068cc1a9468f

            SHA1

            b45f035a622f13c27fb25a2fad5c1f9c4ca54221

            SHA256

            bdbd5de8588b9939b6eeca2bf077cf156d6e659798cb0237ce4aaa5ee27aad4d

            SHA512

            f8ba66181eb06f6ccb86ef9264469ec433e50152af19d900a66b1c96d80d1649ac85fdc6799c35e58c1005d236bd8a3a602a6940cb78aabfb16d6c5f36ff4cb1

          • memory/1044-60-0x0000000000400000-0x0000000000814000-memory.dmp

            Filesize

            4.1MB

          • memory/1044-67-0x0000000000400000-0x0000000000814000-memory.dmp

            Filesize

            4.1MB

          • memory/1044-54-0x0000000000400000-0x0000000000814000-memory.dmp

            Filesize

            4.1MB

          • memory/1060-63-0x0000000000000000-mapping.dmp

          • memory/1328-61-0x0000000000000000-mapping.dmp

          • memory/1360-59-0x0000000000000000-mapping.dmp

          • memory/1520-58-0x0000000000000000-mapping.dmp

          • memory/1648-66-0x0000000000000000-mapping.dmp

          • memory/1656-64-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmp

            Filesize

            8KB

          • memory/1760-57-0x0000000000000000-mapping.dmp

          • memory/2044-55-0x0000000000000000-mapping.dmp