Analysis

  • max time kernel
    296s
  • max time network
    299s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25-07-2024 22:53

General

  • Target

    f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe

  • Size

    790KB

  • MD5

    4b53133b0e11c01f58a1ad4eb69fa0ce

  • SHA1

    00a3b78374a127bcb3c944f4a65ff0fe5ba04d37

  • SHA256

    f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01

  • SHA512

    95d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1

  • SSDEEP

    12288:Ex+HVyVS7kcMhsF6OwUdqSBnqQhDB2TMoWP6LxghFyjmHlYaOLUX:HEVSoTs8ShqwDBLMLihkjkWdLe

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .watz

  • offline_id

    Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1

  • payload_url

  • 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/abe121434ad837dd5bdd03878a14485820240531135509/34284d 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: 0874PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
    "C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
      "C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f70c24b5-0f68-475a-b6f8-c66e456ec08b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3208
      • C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
        "C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2944
        • C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
          "C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:644

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

    492e6b9ce669abcee99a2890ea861df9

    SHA1

    99348f5e97cb1158a1258e96d01964efad6b95ab

    SHA256

    16e24a5f75fce3d04ac961bfc1f62fcf490e24ca78f550ca54aa259ccdaae0fa

    SHA512

    d7babbf89f5f5648fc471848d68fce4e72e82e12ae8df3a10fe49e541c37d3fc4710ad41998f1bd146552823ad783431ebb5ed165def619461d94d75a337d7b6

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

    Filesize

    170B

    MD5

    591c0b6b740633dd6b9470e887b9b1f6

    SHA1

    93780fbf1bd18c27433e4077d86beb581b710160

    SHA256

    8b001854c3648927bdfa66dd4529ff42f3788a1c3b5e03b62f65b610ab435e20

    SHA512

    9a65450939785fbba8ee06bdc91f8d759a447a61a1e7fe930c210483c813c2de2831a0cbc05916e552d89f5732c524a70e2abe49ea40acd44179bb76a835c165

  • C:\Users\Admin\AppData\Local\f70c24b5-0f68-475a-b6f8-c66e456ec08b\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe

    Filesize

    790KB

    MD5

    4b53133b0e11c01f58a1ad4eb69fa0ce

    SHA1

    00a3b78374a127bcb3c944f4a65ff0fe5ba04d37

    SHA256

    f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01

    SHA512

    95d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1

  • memory/588-2-0x0000000004280000-0x000000000439B000-memory.dmp

    Filesize

    1.1MB

  • memory/588-1-0x0000000004130000-0x00000000041CB000-memory.dmp

    Filesize

    620KB

  • memory/644-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/644-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2056-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2056-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2056-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2056-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2056-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB