Analysis

  • max time kernel
    150s
  • max time network
    101s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    31/01/2023, 17:26

General

  • Target

    b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036.exe

  • Size

    72KB

  • MD5

    0fdbf2d4a68a90afefbff037090d73ab

  • SHA1

    aa4f6bae0299c549b0c503f671d05c4b685550ba

  • SHA256

    b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036

  • SHA512

    3e9769707c37c08f45eb89a1560d4c77e193bb3ba7217003798005f497999e1a9525cf24c3bb237bd49d8666517b19a5090eaa200050e3017d6f698c54b3ef51

  • 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 44 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:860
      • 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:536
    • C:\Users\Admin\AppData\Local\Temp\b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036.exe
      "C:\Users\Admin\AppData\Local\Temp\b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Users\Admin\AppData\Local\Temp\b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036.exe
        "C:\Users\Admin\AppData\Local\Temp\b77632a10ce6e9f894ebc439e1d2627a6f91c8b8a28c02773bec45e494707036.exe" --v
        2⤵
          PID:836
      • 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:1696
        • 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:1768

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              557KB

              MD5

              76c3dbb1e9fea62090cdf53dadcbe28e

              SHA1

              d44b32d04adc810c6df258be85dc6b62bd48a307

              SHA256

              556fd54e5595d222cfa2bd353afa66d8d4d1fbb3003afed604672fceae991860

              SHA512

              de4ea57497cf26237430880742f59e8d2a0ac7e7a0b09ed7be590f36fbd08c9ced0ffe46eb69ec2215a9cff55720f24fffcae752cd282250b4da6b75a30b3a1b

            • 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/536-83-0x0000000001CD0000-0x0000000001CF0000-memory.dmp

              Filesize

              128KB

            • memory/536-84-0x0000000001D80000-0x0000000001D9B000-memory.dmp

              Filesize

              108KB

            • memory/536-89-0x0000000001D80000-0x0000000001D9B000-memory.dmp

              Filesize

              108KB

            • memory/536-64-0x0000000000060000-0x00000000000AD000-memory.dmp

              Filesize

              308KB

            • memory/536-88-0x0000000001CD0000-0x0000000001CF0000-memory.dmp

              Filesize

              128KB

            • memory/536-87-0x0000000002EE0000-0x0000000002FEA000-memory.dmp

              Filesize

              1.0MB

            • memory/536-75-0x0000000000380000-0x00000000003F2000-memory.dmp

              Filesize

              456KB

            • memory/536-86-0x0000000001C20000-0x0000000001C3B000-memory.dmp

              Filesize

              108KB

            • memory/536-85-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp

              Filesize

              8KB

            • memory/536-78-0x0000000000060000-0x00000000000AD000-memory.dmp

              Filesize

              308KB

            • memory/536-79-0x0000000000380000-0x00000000003F2000-memory.dmp

              Filesize

              456KB

            • memory/536-82-0x0000000002EE0000-0x0000000002FEA000-memory.dmp

              Filesize

              1.0MB

            • memory/536-81-0x0000000001C20000-0x0000000001C3B000-memory.dmp

              Filesize

              108KB

            • memory/860-80-0x00000000008B0000-0x00000000008FD000-memory.dmp

              Filesize

              308KB

            • memory/860-77-0x0000000000E00000-0x0000000000E72000-memory.dmp

              Filesize

              456KB

            • memory/860-76-0x00000000008B0000-0x00000000008FD000-memory.dmp

              Filesize

              308KB

            • memory/1508-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

              Filesize

              8KB

            • memory/1768-68-0x0000000000630000-0x000000000068E000-memory.dmp

              Filesize

              376KB

            • memory/1768-67-0x0000000001E20000-0x0000000001F21000-memory.dmp

              Filesize

              1.0MB