Overview

overview

10

Static

static

10

bf5f4d7b6e...02.exe

windows7-x64

10

bf5f4d7b6e...02.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    40s
  • max time network
    36s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    18-04-2023 06:00

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General

  • Target

    bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02.exe

  • Size

    4.6MB

  • MD5

    cfd31737ccacf6e9a0e2ac18cf3445ac

  • SHA1

    74c615ca54aaff3c5e6734efef04259290c357ba

  • SHA256

    bf5f4d7b6ef1fdb903677e4ede04fb49952e08cee79822b9b53642bb5d1e6f02

  • SHA512

    a2d1cae0864e66f92c10932df8dd5782ad47579404a6f9112d0e0f7287427fe56dc70aadf77baf8d9e5665cbc5eb26ee58ad9f401b0164cbf054a581c8bda98f

  • SSDEEP

    98304:OOTXCHbq9evuviwF+Mc42HfPt5Sqg9pkJ9:3LCHbqwvuvi40HN5Tgi9

Score
10/10
ransomwarespywarestealer

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\HOW TO RESTORE YOUR FILES.TXT

Ransom Note
Hello! All your files are encrypted, write to me if you want to return your files - I can do it very quickly! Contact me by email: [email protected] or [email protected] The subject line must contain an encryption extension or the name of your company! Do not rename encrypted files, you may lose them forever. You may be a victim of fraud. Free decryption as a guarantee. Send us up to 3 files for free decryption. The total file size should be no more than 1 MB! (not in the archive), and the files should not contain valuable information. (databases, backups, large Excel spreadsheets, etc.) !!! Do not turn off or restart the NAS equipment. This will lead to data loss !!!

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 8 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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.

    spywarestealer
  • 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.

    ransomware
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

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:2040
    • C:\Windows\system32\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\calmhqqsirggc.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1716
      • C:\Windows\system32\sc.exe
        SC QUERY
        3⤵
        • Launches sc.exe
        PID:284
      • C:\Windows\system32\findstr.exe
        FINDSTR SERVICE_NAME
        3⤵
          PID:1808
      • C:\Windows\system32\cmd.exe
        cmd /c C:\Users\Admin\AppData\Local\Temp\iqxpggdtuvqvkemed.bat
        2⤵
          PID:1344
        • C:\Windows\system32\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\famrvbdsrqo.bat
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1820
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1180
        • C:\Windows\system32\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\xawscjhtm.bat
          2⤵
            PID:1152
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1552

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\HOW TO RESTORE YOUR FILES.TXT
          Filesize

          693B

          MD5

          a79e430b2fba0a454b52da329f96740f

          SHA1

          feca3bcb918fced853eb6fd8db45e2cbef7cdce5

          SHA256

          5a834263135bc4f1b86b7236d7f1e2bbbbfa207c748e7e988b37e82ddbd647b0

          SHA512

          c416feb4eaa72a5913cea6af1f8b32855e93c2ed29447f1a71a6bf024caa8412ad77cbd43689b8a9d71da96f21c9c6b9eebd474198419dd3e95e1069e854659e

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        • C:\Users\Admin\AppData\Local\Temp\calmhqqsirggc.bat
          Filesize

          43B

          MD5

          55310bb774fff38cca265dbc70ad6705

          SHA1

          cb8d76e9fd38a0b253056e5f204dab5441fe932b

          SHA256

          1fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d

          SHA512

          40e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4

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        • C:\Users\Admin\AppData\Local\Temp\calmhqqsirggc.bat
          Filesize

          43B

          MD5

          55310bb774fff38cca265dbc70ad6705

          SHA1

          cb8d76e9fd38a0b253056e5f204dab5441fe932b

          SHA256

          1fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d

          SHA512

          40e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4

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        • C:\Users\Admin\AppData\Local\Temp\famrvbdsrqo.bat
          Filesize

          47B

          MD5

          2202e846ba05d7f0bb20adbc5249c359

          SHA1

          4115d2d15614503456aea14db61d71a756cc7b8c

          SHA256

          0965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f

          SHA512

          cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7

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        • C:\Users\Admin\AppData\Local\Temp\iqxpggdtuvqvkemed.bat
          Filesize

          47B

          MD5

          2202e846ba05d7f0bb20adbc5249c359

          SHA1

          4115d2d15614503456aea14db61d71a756cc7b8c

          SHA256

          0965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f

          SHA512

          cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7

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        • C:\Users\Admin\AppData\Local\Temp\xawscjhtm.bat
          Filesize

          43B

          MD5

          3b854ac9791ad8977b46f8b347eca1de

          SHA1

          6d0eb57be34e059a7275e227928d52400200dc72

          SHA256

          4dd7521f4d8351fed8275553a0fa4713f65872a25011f4853713f6915abbbf09

          SHA512

          24853c988df7274e10119cdbbc8816afaa20da661ac03286f9b47660126be8bf6eef40f40261c79b205308647ef42c87d1d840280fa12f7179b3eefef5e75030

          Download Submit