Overview

overview

10

Static

static

galadriel

windows7_x64

10

Resubmissions

02/11/2020, 09:26

201102-arw84b2l7a 10

01/11/2020, 18:55

201101-6vvhqyxv6n 8

Analysis

  • max time kernel
    215s
  • max time network
    299s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02/11/2020, 09:26

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General

  • Target

    d5d744e0f7984ec01593da35f26bf24e95e4b1cc8bd1c0ff4f31de5dbf94e38f.bin.sample.exe

  • Size

    133KB

  • MD5

    ba59b52b445f45aaf8fb707445587b48

  • SHA1

    4d8a885624f580a3578026acae4f0bd53032db5d

  • SHA256

    d5d744e0f7984ec01593da35f26bf24e95e4b1cc8bd1c0ff4f31de5dbf94e38f

  • SHA512

    be951dca8946e187aacc86ef16fa319e6524191286316e3f387d21b1797f92dea6aa0f37ae47efd60f5fb7ccb342135049bb3753bbb35941438f6a690bae3137

Score
10/10
ryukdiscoveryransomwarespyware

Malware Config

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Modifies file permissions 1 TTPs 2 IoCs
    discovery
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Drops file in Program Files directory 1331 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5d744e0f7984ec01593da35f26bf24e95e4b1cc8bd1c0ff4f31de5dbf94e38f.bin.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\d5d744e0f7984ec01593da35f26bf24e95e4b1cc8bd1c0ff4f31de5dbf94e38f.bin.sample.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Users\Admin\AppData\Local\Temp\kyDMeSOhAlan.exe
      "C:\Users\Admin\AppData\Local\Temp\kyDMeSOhAlan.exe" 8 LAN
      2⤵
      • Executes dropped EXE
      PID:608
    • C:\Users\Admin\AppData\Local\Temp\kTzklOMoPlan.exe
      "C:\Users\Admin\AppData\Local\Temp\kTzklOMoPlan.exe" 8 LAN
      2⤵
      • Executes dropped EXE
      PID:336
    • C:\Users\Admin\AppData\Local\Temp\xTKwHEgkDlan.exe
      "C:\Users\Admin\AppData\Local\Temp\xTKwHEgkDlan.exe" 8 LAN
      2⤵
      • Executes dropped EXE
      PID:396
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\*" /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:1488
    • C:\Windows\SysWOW64\icacls.exe
      icacls "D:\*" /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:1512
    • C:\Windows\SysWOW64\net.exe
      "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "audioendpointbuilder" /y
        3⤵
          PID:2028
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2712
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "audioendpointbuilder" /y
          3⤵
            PID:924
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\System32\net.exe" stop "samss" /y
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:384
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop "samss" /y
            3⤵
              PID:1636
          • C:\Windows\SysWOW64\net.exe
            "C:\Windows\System32\net.exe" stop "samss" /y
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1580
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "samss" /y
              3⤵
                PID:2044

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • memory/776-14-0x0000000002CE0000-0x0000000002CF1000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-137-0x00000000105D0000-0x00000000105E1000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-18-0x0000000010180000-0x0000000010191000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-138-0x00000000101C0000-0x00000000101D1000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-13-0x00000000030F0000-0x0000000003101000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-12-0x0000000002CE0000-0x0000000002CF1000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-19-0x0000000010590000-0x00000000105A1000-memory.dmp

            Filesize

            68KB

            Download

          • memory/776-136-0x00000000101C0000-0x00000000101D1000-memory.dmp

            Filesize

            68KB

            Download