Resubmissions

27-08-2024 20:54

240827-zp92wsshmm 10

27-08-2024 20:49

240827-zmfp9ssgjr 10

Analysis

  • max time kernel
    142s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-08-2024 20:49

General

  • Target

    225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe

  • Size

    813KB

  • MD5

    03851cdd1e543a7f09c0e4ade384bfd4

  • SHA1

    342860ec1d18ac3b2cccd35ca2794d1db7c71353

  • SHA256

    225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5

  • SHA512

    4b6ed235558eeeffac123b707d5d9cb1af448c83162e75051459f8f9eb85cfdb9df903460faf22279df5497efab9c747fa8f1588f38312a7a364a363a3e91b38

  • SSDEEP

    12288:R+KI630b+EJrbydbNKDcEi453oh1Nj0DYK636Zstz0pW5CDmyipL+1ea0mw:Rzkb+qHSbIZz5hW6Z2z0pW9+QFmw

Malware Config

Extracted

Family

djvu

C2

http://asvb.top/nddddhsspen6/get.php

Attributes
  • extension

    .pcqq

  • offline_id

    3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1

  • payload_url

    http://asvb.top/files/penelop/updatewin1.exe

    http://asvb.top/files/penelop/updatewin2.exe

    http://asvb.top/files/penelop/updatewin.exe

    http://asvb.top/files/penelop/3.exe

    http://asvb.top/files/penelop/4.exe

    http://asvb.top/files/penelop/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-TVrnNufMGq Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0296Sirj

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 11 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
    "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
      "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:4300
      • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
        "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3576
        • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
          "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2448
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 568
            5⤵
            • Program crash
            PID:4404
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2448 -ip 2448
    1⤵
      PID:2372
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4028,i,8231329449558834090,4540802069600791165,262144 --variations-seed-version --mojo-platform-channel-handle=4464 /prefetch:8
      1⤵
        PID:232
      • C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
        C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe --Task
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1400
        • C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
          C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe --Task
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:548

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

        Filesize

        3B

        MD5

        8a80554c91d9fca8acb82f023de02f11

        SHA1

        5f36b2ea290645ee34d943220a14b54ee5ea5be5

        SHA256

        ca3d163bab055381827226140568f3bef7eaac187cebd76878e0b63e9e442356

        SHA512

        ca4b6defb8adcc010050bc8b1bb8f8092c4928b8a0fba32146abcfb256e4d91672f88ca2cdf6210e754e5b8ac5e23fb023806ccd749ac8b701f79a691f03c87a

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

        Filesize

        302B

        MD5

        f905a5a284b48d1b1c856bb8f76e0e29

        SHA1

        30c8b864f90b1bc472be013eeaef2a1f3ca8eff0

        SHA256

        064c73a4a76601b4e4da9ce814648097a151cb93d01e593244d7b9634972c5ec

        SHA512

        9bc497fdef2f6322aa576c1a8cc2699d8983e0033d1bd6bfc04ad709c79e60f6ff8d4f2f5c61d3d9857f513b62019905e734b69c3226bfa3a52ab63ad676604f

      • C:\Users\Admin\AppData\Local\21f52e9b-6be6-4b87-884f-b0b80987f108\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe

        Filesize

        813KB

        MD5

        03851cdd1e543a7f09c0e4ade384bfd4

        SHA1

        342860ec1d18ac3b2cccd35ca2794d1db7c71353

        SHA256

        225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5

        SHA512

        4b6ed235558eeeffac123b707d5d9cb1af448c83162e75051459f8f9eb85cfdb9df903460faf22279df5497efab9c747fa8f1588f38312a7a364a363a3e91b38

      • memory/548-39-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/548-31-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1400-38-0x0000000000400000-0x00000000004DD000-memory.dmp

        Filesize

        884KB

      • memory/1400-28-0x0000000000400000-0x00000000004DD000-memory.dmp

        Filesize

        884KB

      • memory/2448-22-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2448-20-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2448-19-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2608-5-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2608-15-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2608-6-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2608-3-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2608-4-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3576-23-0x0000000000400000-0x00000000004DD000-memory.dmp

        Filesize

        884KB

      • memory/3576-17-0x0000000000400000-0x00000000004DD000-memory.dmp

        Filesize

        884KB

      • memory/4436-1-0x00000000020E0000-0x0000000002179000-memory.dmp

        Filesize

        612KB

      • memory/4436-2-0x0000000002270000-0x000000000238B000-memory.dmp

        Filesize

        1.1MB