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Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    31/01/2023, 10:30

General

  • Target

    4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55.exe

  • Size

    72KB

  • MD5

    9905fbc44d31dcac233e5c6bebc27035

  • SHA1

    824c546905f046702eeeb9405c4b4d7cb03eb8ec

  • SHA256

    4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55

  • SHA512

    3755f29c31aacdc216af3516b17cd9bf91d1d3b38d7913b3107535999c5a182a84ab357fb35fa4d75f7f2d22ecf7820d1a9ae19774d2fde829bb9af726fbd9de

  • 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 13 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 22 IoCs
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:464
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:888
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k WspService
        2⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1292
    • C:\Users\Admin\AppData\Local\Temp\4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55.exe
      "C:\Users\Admin\AppData\Local\Temp\4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1172
      • C:\Users\Admin\AppData\Local\Temp\4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55.exe
        "C:\Users\Admin\AppData\Local\Temp\4bff4b7f8db1497c00f3a666cfcbec6b1bad407a1d5f7ad6909e115c3f98ba55.exe" --v
        2⤵
          PID:2020
      • 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:780
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
          2⤵
          • Loads dropped DLL
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:572

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        557KB

        MD5

        f1f63fb8caa7c9447692fe4dc35dce65

        SHA1

        ea4816ff6db602728e97c990c4e71822e262e87c

        SHA256

        67e6fcfa88fcfe4fa1c87671567bd8bcf3cb2f79a5cb88173552b2222bbd27d2

        SHA512

        e5984aa82fd76ebe9804678b722ca416c9a890bab10d20a0f0e2a9b348f86ac3da4c210ddb5bd09ecf489ac90cc9f8d1939a489a242fe436a3af84c09743aed5

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

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

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

        Filesize

        52KB

        MD5

        1b20e998d058e813dfc515867d31124f

        SHA1

        c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

        SHA256

        24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

        SHA512

        79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

      • memory/572-70-0x00000000009A0000-0x00000000009FE000-memory.dmp

        Filesize

        376KB

      • memory/572-68-0x0000000000890000-0x0000000000991000-memory.dmp

        Filesize

        1.0MB

      • memory/888-72-0x0000000000A70000-0x0000000000ABD000-memory.dmp

        Filesize

        308KB

      • memory/888-76-0x0000000000A70000-0x0000000000ABD000-memory.dmp

        Filesize

        308KB

      • memory/888-73-0x0000000000B30000-0x0000000000BA2000-memory.dmp

        Filesize

        456KB

      • memory/1172-54-0x0000000075571000-0x0000000075573000-memory.dmp

        Filesize

        8KB

      • memory/1292-75-0x0000000000440000-0x00000000004B2000-memory.dmp

        Filesize

        456KB

      • memory/1292-64-0x00000000000E0000-0x000000000012D000-memory.dmp

        Filesize

        308KB

      • memory/1292-74-0x00000000000E0000-0x000000000012D000-memory.dmp

        Filesize

        308KB

      • memory/1292-77-0x0000000000440000-0x00000000004B2000-memory.dmp

        Filesize

        456KB

      • memory/1292-78-0x000007FEFB5C1000-0x000007FEFB5C3000-memory.dmp

        Filesize

        8KB

      • memory/1292-79-0x0000000001C10000-0x0000000001C2B000-memory.dmp

        Filesize

        108KB

      • memory/1292-80-0x0000000002EF0000-0x0000000002FFA000-memory.dmp

        Filesize

        1.0MB

      • memory/1292-82-0x0000000001CF0000-0x0000000001D0B000-memory.dmp

        Filesize

        108KB

      • memory/1292-81-0x0000000001CD0000-0x0000000001CF0000-memory.dmp

        Filesize

        128KB

      • memory/1292-83-0x0000000002EF0000-0x0000000002FFA000-memory.dmp

        Filesize

        1.0MB