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Analysis

  • max time kernel
    99s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2023, 03:00

General

  • Target

    412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772.exe

  • Size

    72KB

  • MD5

    834a79ee7a59547a89ef4f849829b05b

  • SHA1

    28db68cffea38ed08db8fc3ed687a45494c38dcb

  • SHA256

    412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772

  • SHA512

    3adebe76c029607c1630595714b959d0e335b12c5d6d6e444788803bdd9e879aa3ff5b6b5f9370f06e74c50a5a832efb7f7ce24f6fdb51147269ab4a45261774

  • SSDEEP

    1536:3vAkGoo+bH/J027ZKxyafwhHCC/mq1ktG:3vuWbaRgaYtX1ktG

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772.exe
    "C:\Users\Admin\AppData\Local\Temp\412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2640
    • C:\Users\Admin\AppData\Local\Temp\412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772.exe
      "C:\Users\Admin\AppData\Local\Temp\412bb38f795aba08e44a81136b0f12c9a6be6b60db348e230c8bfa2b84eb9772.exe" --v
      2⤵
        PID:3184
    • C:\Windows\system32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
      1⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
        2⤵
        • Loads dropped DLL
        PID:1816
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 600
          3⤵
          • Program crash
          PID:1000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1816 -ip 1816
      1⤵
        PID:3948

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\db.dat

        Filesize

        557KB

        MD5

        cb077166b5cc181bde4c2bb30d28a99a

        SHA1

        800aab82a816e41ded59bc20cda364fa22dc0bcb

        SHA256

        40f19665b2ae343aa3838226e3393e2816a58fbb16fa4d2a3da8c602f20c9f72

        SHA512

        d1a9c9696f17e0ed3fe34996fef186c23ca9c0bb5cc1073a01bee88ca3d6a096dce61145f6339f88fd08fd4ac5d451105547a604c9a10fb373a78c6cf9df2811

      • C:\Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

      • C:\Users\Admin\AppData\Local\Temp\db.dll

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6