Analysis

  • max time kernel
    143s
  • max time network
    124s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 05:02

General

  • Target

    58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe

  • Size

    710KB

  • MD5

    34d48ac48d4fa713d24a1f14f1e37896

  • SHA1

    0aa53f9d59f9d3818d7f90de12196907b00ad560

  • SHA256

    58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed

  • SHA512

    34206132228d25c18cb2a79df65a0243619634d44cee58972de833aff9877a4bb9bff410be07a62a194efd5acd430f49dfaa79cacfb99c85bd4277a490795e68

  • SSDEEP

    12288:Ojd4ObjwejVgw0RPXgv5nmhQvXNT1pUpRnQHRdFs1jb8qEPo58Iv2+mdky:OjdfTF0RelT1ypRn+RdFs1jbJEPoV+my

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .vepi

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0871PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
    "C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4172
    • C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
      "C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3300
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\160296cc-0a68-41b0-8560-0da6b818db2e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2560
      • C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
        "C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1868
        • C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
          "C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    cb35bd9d6c5a4fd50a9263018bbd9784

    SHA1

    efec24f93d2af7bd01969c36870ebc928fa6c790

    SHA256

    be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612

    SHA512

    ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    4b0bbd07dd1226bfa4ae0a5787f4416a

    SHA1

    4ffdc118bb8b28de4661bd202977024de279d826

    SHA256

    cd6e2b1f0de35639be49d8926f7688e914f567a77c1d95bc7a0ba0a77ab68923

    SHA512

    1c442dad66e860bdf3d23e85364139a97215d65a206cbccd1985443821b79f901b6ec890594f9f8f78864bdcdc5308a5cc4ea3e79621686774054e2c89327487

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    019c30f8b68cb1de891153248fc69e97

    SHA1

    a1046c3f0280c67f4a44caaa5da6c1ccaf78318e

    SHA256

    127699ce06652147c283966836f31b2b2173c8a3bd0b97e00e7f8ce4a1861545

    SHA512

    888c0d0a3552e35be8eb38285a2f998c09dce95947a6648746631da9aa2167c75b8fb8b3a0a497429fd356469f034c4f3a6ca93a2787965d07818180db40b7af

  • C:\Users\Admin\AppData\Local\160296cc-0a68-41b0-8560-0da6b818db2e\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe

    Filesize

    710KB

    MD5

    34d48ac48d4fa713d24a1f14f1e37896

    SHA1

    0aa53f9d59f9d3818d7f90de12196907b00ad560

    SHA256

    58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed

    SHA512

    34206132228d25c18cb2a79df65a0243619634d44cee58972de833aff9877a4bb9bff410be07a62a194efd5acd430f49dfaa79cacfb99c85bd4277a490795e68

  • memory/1528-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1528-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3300-1-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3300-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4172-2-0x0000000004A40000-0x0000000004AD8000-memory.dmp

    Filesize

    608KB

  • memory/4172-4-0x0000000004B40000-0x0000000004C5B000-memory.dmp

    Filesize

    1.1MB