Analysis

  • max time kernel
    119s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-10-2022 09:58

General

  • Target

    bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02.exe

  • Size

    4.6MB

  • MD5

    cfd31737ccacf6e9a0e2ac18cf3445ac

  • SHA1

    74c615ca54aaff3c5e6734efef04259290c357ba

  • SHA256

    bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02

  • SHA512

    a2d1cae0864e66f92c10932df8dd5782ad47579404a6f9112d0e0f7287427fe56dc70aadf77baf8d9e5665cbc5eb26ee58ad9f401b0164cbf054a581c8bda98f

  • SSDEEP

    98304:OOTXCHbq9evuviwF+Mc42HfPt5Sqg9pkJ9:3LCHbqwvuvi40HN5Tgi9

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 12 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 2 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02.exe
    "C:\Users\Admin\AppData\Local\Temp\bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\thwgdj.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Windows\system32\sc.exe
        SC QUERY
        3⤵
        • Launches sc.exe
        PID:3980
      • C:\Windows\system32\findstr.exe
        FINDSTR SERVICE_NAME
        3⤵
          PID:220
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\potrjcuqdqnvoltkslcr.bat
        2⤵
          PID:1912
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\sfdrjwvpn.bat
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:448
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4532
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\cfiyyynsdha.bat
          2⤵
            PID:4556
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4832

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          47B

          MD5

          2202e846ba05d7f0bb20adbc5249c359

          SHA1

          4115d2d15614503456aea14db61d71a756cc7b8c

          SHA256

          0965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f

          SHA512

          cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7

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

          Filesize

          43B

          MD5

          55310bb774fff38cca265dbc70ad6705

          SHA1

          cb8d76e9fd38a0b253056e5f204dab5441fe932b

          SHA256

          1fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d

          SHA512

          40e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4

        • memory/220-135-0x0000000000000000-mapping.dmp

        • memory/448-137-0x0000000000000000-mapping.dmp

        • memory/1912-136-0x0000000000000000-mapping.dmp

        • memory/2012-132-0x0000000000000000-mapping.dmp

        • memory/3980-134-0x0000000000000000-mapping.dmp

        • memory/4532-139-0x0000000000000000-mapping.dmp

        • memory/4556-140-0x0000000000000000-mapping.dmp