Overview

overview

10

Static

static

1d7647c565...9b.exe

windows7_x64

10

1d7647c565...9b.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    185s
  • max time network
    209s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    20/02/2022, 09:36 UTC

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General

  • Target

    1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b.exe

  • Size

    170KB

  • MD5

    87f52df87c03ef416af719d3b2210497

  • SHA1

    0f8047b08834f8a229992af67f1f6eb232d65941

  • SHA256

    1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b

  • SHA512

    01675e5440d7c32b592eb92b233ba236eab1dd2e72bc19d3054d88c84539a5b80674d67c2c655b9f9a9731ec380ed8c65db5a66af1f449f5f7d3e4e5aa62aa5c

Score
10/10
ryukpersistenceransomware

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note
Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at WayneEvenson@protonmail.com or WayneEvenson@tutanota.com BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Emails

WayneEvenson@protonmail.com

WayneEvenson@tutanota.com
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies data under HKEY_USERS 45 IoCs
  • Modifies registry class 34 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:3000
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
      PID:2828
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2652
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2652 -s 356
        2⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        PID:3032
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
      1⤵
        PID:2456
      • C:\Windows\system32\taskhostw.exe
        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
        1⤵
          PID:2208
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k UnistackSvcGroup
          1⤵
            PID:2160
          • C:\Windows\system32\sihost.exe
            sihost.exe
            1⤵
            • Drops file in Program Files directory
            PID:2140
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
            • Modifies registry class
            PID:3676
          • C:\Windows\system32\BackgroundTransferHost.exe
            "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
            1⤵
              PID:3848
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3616
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3208
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:2204
                  • C:\Users\Admin\AppData\Local\Temp\1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b.exe
                    "C:\Users\Admin\AppData\Local\Temp\1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b.exe"
                    1⤵
                    • Checks computer location settings
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:3372
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b.exe" /f
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:3020
                      • C:\Windows\system32\reg.exe
                        REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\1d7647c565c6efb818aff1500104584d926c6fac3be19f56fd6106c17f5e2e9b.exe" /f
                        3⤵
                        • Adds Run key to start application
                        PID:3696
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    1⤵
                    • Modifies registry class
                    • Suspicious use of SetWindowsHookEx
                    PID:4100
                  • C:\Windows\System32\svchost.exe
                    C:\Windows\System32\svchost.exe -k NetworkService -p
                    1⤵
                    • Drops file in Windows directory
                    • Modifies data under HKEY_USERS
                    PID:4560

                  Network

                  • flag-us
                    DNS
                    geo.prod.do.dsp.mp.microsoft.com
                    NetworkService
                    Remote address:
                    8.8.8.8:53
                    Request
                    geo.prod.do.dsp.mp.microsoft.com
                    IN A
                    Response
                    geo.prod.do.dsp.mp.microsoft.com
                    IN CNAME
                    geo.prod.do.dsp.trafficmanager.net
                    geo.prod.do.dsp.trafficmanager.net
                    IN CNAME
                    array802.prod.do.dsp.mp.microsoft.com
                    array802.prod.do.dsp.mp.microsoft.com
                    IN A
                    52.137.102.105
                  • flag-us
                    DNS
                    kv801.prod.do.dsp.mp.microsoft.com
                    NetworkService
                    Remote address:
                    8.8.8.8:53
                    Request
                    kv801.prod.do.dsp.mp.microsoft.com
                    IN A
                    Response
                    kv801.prod.do.dsp.mp.microsoft.com
                    IN CNAME
                    kv801.prod.do.dsp.mp.microsoft.com.edgekey.net
                    kv801.prod.do.dsp.mp.microsoft.com.edgekey.net
                    IN CNAME
                    e12437.g.akamaiedge.net
                    e12437.g.akamaiedge.net
                    IN A
                    184.29.205.60
                  • flag-nl
                    GET
                    https://kv801.prod.do.dsp.mp.microsoft.com/all?doClientVersion=10.0.19041.1266&countryCode=US&profile=256&CacheId=1
                    NetworkService
                    Remote address:
                    184.29.205.60:443
                    Request
                    GET /all?doClientVersion=10.0.19041.1266&countryCode=US&profile=256&CacheId=1 HTTP/1.1
                    Connection: Keep-Alive
                    Accept: */*
                    Accept-Encoding: gzip, deflate
                    User-Agent: Microsoft-Delivery-Optimization/10.0
                    MS-CV: dxEqMuG09kOKWz2J.2.1.1
                    Content-Length: 0
                    Host: kv801.prod.do.dsp.mp.microsoft.com
                    Response
                    HTTP/1.1 200 OK
                    Content-Type: text/json
                    Server: Microsoft-IIS/10.0
                    X-AspNet-Version: 4.0.30319
                    X-Powered-By: ASP.NET
                    Vary: Accept-Encoding
                    Content-Encoding: gzip
                    Content-Length: 808
                    Cache-Control: max-age=4
                    Date: Sun, 20 Feb 2022 10:31:27 GMT
                    Connection: keep-alive
                  • 8.238.20.254:80
                    322 B
                     7
                  • 8.238.20.254:80
                    322 B
                     7
                  • 104.80.224.57:443
                    322 B
                     7
                  • 104.80.224.57:443
                    tls
                    92 B
                     111 B
                     2
                    2
                  • 52.137.102.105:443
                    geo.prod.do.dsp.mp.microsoft.com
                    tls, https
                    NetworkService
                    1.2kB
                     3.5kB
                     12
                    9
                  • 184.29.205.60:443
                    tls
                    92 B
                     111 B
                     2
                    2
                  • 184.29.205.60:443
                    tls
                    92 B
                     111 B
                     2
                    2
                  • 184.29.205.60:443
                    https://kv801.prod.do.dsp.mp.microsoft.com/all?doClientVersion=10.0.19041.1266&countryCode=US&profile=256&CacheId=1
                    tls, http
                    NetworkService
                    1.0kB
                     7.7kB
                     8
                    11

                    HTTP Request

                    GET https://kv801.prod.do.dsp.mp.microsoft.com/all?doClientVersion=10.0.19041.1266&countryCode=US&profile=256&CacheId=1

                    HTTP Response

                    200
                  • 184.29.205.60:443
                    kv801.prod.do.dsp.mp.microsoft.com
                    tls
                    92 B
                     111 B
                     2
                    2
                  • 8.8.8.8:53
                    geo.prod.do.dsp.mp.microsoft.com
                    dns
                    NetworkService
                    78 B
                     165 B
                     1
                    1

                    DNS Request

                    geo.prod.do.dsp.mp.microsoft.com

                    DNS Response

                    52.137.102.105

                  • 8.8.8.8:53
                    kv801.prod.do.dsp.mp.microsoft.com
                    dns
                    NetworkService
                    80 B
                     190 B
                     1
                    1

                    DNS Request

                    kv801.prod.do.dsp.mp.microsoft.com

                    DNS Response

                    184.29.205.60

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/2140-130-0x00007FF61CA20000-0x00007FF61CDAE000-memory.dmp

                    Filesize

                    3.6MB

                    Download

                  • memory/2160-131-0x00007FF61CA20000-0x00007FF61CDAE000-memory.dmp

                    Filesize

                    3.6MB

                    Download

                  • memory/2652-132-0x000001A8A9E50000-0x000001A8A9E58000-memory.dmp

                    Filesize

                    32KB

                    Download

                  • memory/2652-133-0x000001A8A9E40000-0x000001A8A9E41000-memory.dmp

                    Filesize

                    4KB

                    Download

                  • memory/2652-137-0x000001A8A9E50000-0x000001A8A9E58000-memory.dmp

                    Filesize

                    32KB

                    Download

                  • memory/2652-138-0x000001A8A98C0000-0x000001A8A98C1000-memory.dmp

                    Filesize

                    4KB

                    Download

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