Resubmissions

21-09-2024 16:40

240921-t6s7tasfpl 10

21-09-2024 16:37

240921-t46ecssfjj 10

21-09-2024 12:12

240921-pdcbda1fkd 10

Analysis

  • max time kernel
    297s
  • max time network
    207s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-09-2024 16:40

General

  • Target

    82C4.exe

  • Size

    768KB

  • MD5

    663a7ee6f23102380056645ded592075

  • SHA1

    42f7de8be635ed37f91c289a81e71bc67139adb9

  • SHA256

    2f9c6d06d25dfea43bb52e9b81df3dd3ebdef5d066573494598e77c450937e8f

  • SHA512

    9d4e890505ccda9a0b3cd971598153c1e33be481d10c1133851f621fc4aad148554977b3162d36cb97759fde5603cfebf7876ad39199eee0519ecd3b1f857d09

  • SSDEEP

    12288:wyEfg9+yzz81R9K4UW/ug6nkYxMDoG8AGjn6PkRnTFXD1l9e8k7phRuHH8n4p:IQmQ43/rYE8vdnTFRU6H84

Malware Config

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6/get.php

Attributes
  • extension

    .nqsq

  • offline_id

    OGykROpbgxJhrG1qc9yB9PwnsSv1Eo04vOCP0rt1

  • payload_url

    http://znpst.top/dl/build2.exe

    http://rlrz.org/files/1/build3.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-O1iz3esfm2 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: 0337gSd743d

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 25 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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 6 IoCs

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

  • Suspicious use of SetThreadContext 6 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 13 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\82C4.exe
    "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Users\Admin\AppData\Local\Temp\82C4.exe
      "C:\Users\Admin\AppData\Local\Temp\82C4.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:5000
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\40d61d1f-3109-4433-bcbe-1814db7b374b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:4860
      • C:\Users\Admin\AppData\Local\Temp\82C4.exe
        "C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3252
        • C:\Users\Admin\AppData\Local\Temp\82C4.exe
          "C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3228
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 572
            5⤵
            • Program crash
            PID:3668
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3228 -ip 3228
    1⤵
      PID:228
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:4972
      • C:\Users\Admin\AppData\Local\Temp\82C4.exe
        "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
        1⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4452
        • C:\Users\Admin\AppData\Local\Temp\82C4.exe
          "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
          2⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4828
          • C:\Users\Admin\AppData\Local\Temp\82C4.exe
            "C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask
            3⤵
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4368
            • C:\Users\Admin\AppData\Local\Temp\82C4.exe
              "C:\Users\Admin\AppData\Local\Temp\82C4.exe" --Admin IsNotAutoStart IsNotTask
              4⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:1500
      • C:\Users\Admin\AppData\Local\Temp\82C4.exe
        "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
        1⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2656
        • C:\Users\Admin\AppData\Local\Temp\82C4.exe
          "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2104
      • C:\Users\Admin\AppData\Local\Temp\82C4.exe
        "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
        1⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:228
        • C:\Users\Admin\AppData\Local\Temp\82C4.exe
          "C:\Users\Admin\AppData\Local\Temp\82C4.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3888

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

        Filesize

        1KB

        MD5

        7fb5fa1534dcf77f2125b2403b30a0ee

        SHA1

        365d96812a69ac0a4611ea4b70a3f306576cc3ea

        SHA256

        33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

        SHA512

        a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

        Filesize

        436B

        MD5

        971c514f84bba0785f80aa1c23edfd79

        SHA1

        732acea710a87530c6b08ecdf32a110d254a54c8

        SHA256

        f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

        SHA512

        43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

        Filesize

        174B

        MD5

        191d1ef3b51c521b8cc24cb0a1943fd3

        SHA1

        7d7456830008d81fa6325dd88142a1e10c37eed5

        SHA256

        66156114e0335494edb6c55af86bb3473db56282a2bbca7b9ac104a7d0099e0b

        SHA512

        93182d1677763d1295ef847918f72de490923f8cfcb3a1580ad17967ccfe063c6dc74d7f53b568b9f6d8936741453f941f80d9f08de64a816f0670e74fd298ec

      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

        Filesize

        170B

        MD5

        f22e4ea24fa5316c3c1b4f08d551e7a3

        SHA1

        9690460b76dd698811f5939784c22498899b4d17

        SHA256

        cb5a96876b94fb293b45e07896ddb05376577b780dd52ab1553de7403e1b807f

        SHA512

        7b8b142437756ff617e8f555c00858ae6d7329889c5b26e6e9bb7d9dcf3dfb4f7d4ba4e640128023e3e6ebd1d960bf26862ccd0e8e323579639fc5686fa29d75

      • C:\Users\Admin\AppData\Local\40d61d1f-3109-4433-bcbe-1814db7b374b\82C4.exe

        Filesize

        768KB

        MD5

        663a7ee6f23102380056645ded592075

        SHA1

        42f7de8be635ed37f91c289a81e71bc67139adb9

        SHA256

        2f9c6d06d25dfea43bb52e9b81df3dd3ebdef5d066573494598e77c450937e8f

        SHA512

        9d4e890505ccda9a0b3cd971598153c1e33be481d10c1133851f621fc4aad148554977b3162d36cb97759fde5603cfebf7876ad39199eee0519ecd3b1f857d09

      • memory/1500-51-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-57-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-64-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-44-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-53-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-43-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-54-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-45-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-58-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/1500-56-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2104-49-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2104-48-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3228-24-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3228-25-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3228-27-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3252-23-0x0000000000400000-0x0000000000532000-memory.dmp

        Filesize

        1.2MB

      • memory/3252-21-0x0000000000400000-0x0000000000532000-memory.dmp

        Filesize

        1.2MB

      • memory/3888-61-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3888-62-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3912-1-0x00000000006A0000-0x0000000000739000-memory.dmp

        Filesize

        612KB

      • memory/3912-2-0x0000000000890000-0x00000000009AB000-memory.dmp

        Filesize

        1.1MB

      • memory/4828-39-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4828-32-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/5000-6-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/5000-3-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/5000-4-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/5000-5-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/5000-20-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB