Analysis

  • max time kernel
    142s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    18-08-2024 11:23

General

  • Target

    file.exe

  • Size

    777KB

  • MD5

    006edf0ac466164ddc9e0ac56474fe0a

  • SHA1

    ee9f512713af63759f11279090d2c8004762735b

  • SHA256

    d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a

  • SHA512

    43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808

  • SSDEEP

    24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j

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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2116
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3bb5ab68-0524-42de-a018-4d17f0bf9510" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3008
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2608
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2248

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

    da535fa7d647fba40801d4a6f220aa29

    SHA1

    c481cb9f46c78bdd37189d9f22bf3b07f9adbd7f

    SHA256

    ec92f858a528cf9c5c0f1c3f14c604b72f0603ae5cd58461302441e06953866e

    SHA512

    07a072b9a44cbecb4f30684262568edfaf9d17e6e47d1e4b83df7394ba94b8517c93119a1a4998153b5beb0d6142e0b0504d84cc69ea468a4e74cab749cb7739

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    32a2975b75c11bf2f01cd3fad1e0d64a

    SHA1

    64ab00edf3fbb67a9e860d07b67a127d9f4c785f

    SHA256

    a8657e448f9e33e7c76d6c96e76f34e85c1522088b1d009435f21721ed5865ab

    SHA512

    0ebce890cdda442cf858a3bb19b16dddf4dbba1711764936eaeb8b48062a2a9a5b977223ad7bba5ef536082418c28191ec0f62dca30d1f84e9822264012b7d14

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

    Filesize

    170B

    MD5

    735ea2c9bc752f4db2eab728f40257c6

    SHA1

    17af493999215997c499f4558016b4030c1d9afb

    SHA256

    0324e7b35622fa5dbbdc12d3285aac2e291cd193172af3179a7e601a3fe8897d

    SHA512

    6482864dae5489ff2a4b74e1712b33b43eee632b2626a6e0eee024dab1c72ed5a85ab790b03878710d9dbc40329bfc521c2db8fe88200793b4320a40c171f930

  • C:\Users\Admin\AppData\Local\3bb5ab68-0524-42de-a018-4d17f0bf9510\file.exe

    Filesize

    777KB

    MD5

    006edf0ac466164ddc9e0ac56474fe0a

    SHA1

    ee9f512713af63759f11279090d2c8004762735b

    SHA256

    d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a

    SHA512

    43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808

  • C:\Users\Admin\AppData\Local\Temp\CabA045.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/2116-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2116-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2116-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2116-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2116-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2192-2-0x00000000006B0000-0x00000000007CB000-memory.dmp

    Filesize

    1.1MB

  • memory/2192-1-0x0000000000300000-0x0000000000391000-memory.dmp

    Filesize

    580KB

  • memory/2192-0-0x0000000000300000-0x0000000000391000-memory.dmp

    Filesize

    580KB

  • memory/2248-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-60-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2248-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2608-38-0x0000000000400000-0x00000000004D3000-memory.dmp

    Filesize

    844KB

  • memory/2608-32-0x0000000000400000-0x00000000004D3000-memory.dmp

    Filesize

    844KB

  • memory/2608-31-0x00000000004E0000-0x0000000000571000-memory.dmp

    Filesize

    580KB