Analysis

  • max time kernel
    117s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    26-07-2024 02:44

General

  • Target

    5c171af1b9174fd62c8a9e3f2de9df00N.exe

  • Size

    888KB

  • MD5

    5c171af1b9174fd62c8a9e3f2de9df00

  • SHA1

    88586368c833ce427e3e28af0a7bd5a18b0add4c

  • SHA256

    856fed29facb17f62dd6449b1cfabe65de2b8cb478e52417e7c0069bde7db864

  • SHA512

    5675000af023d8c2f1c4c9091f4356178ec2c8975f66ad259483ea02c9bf458280449143d64ad13ec2b65f81380da80eb7a835546752fbbfa1c917f5553f4af1

  • SSDEEP

    24576:4TJYdNu+4/LN1WKVQ7A6WNETiczoc9myk:4GV4/LK+pPwRNmy

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\5c171af1b9174fd62c8a9e3f2de9df00N.exe
    "C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe
      "C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2100
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e0ead216-7265-4efb-8d99-2d7e775a9999" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2624
      • C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe
        "C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2820
        • C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe
          "C:\Users\Admin\AppData\Local\Temp\5c171af1b9174fd62c8a9e3f2de9df00N.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1700

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

    e794408964a3e46f759b23cca18091bf

    SHA1

    772ccf3fdde3d9cd4cd6b7226604a7051243b518

    SHA256

    996ed73d951680c1b9e86536ed26e55016ea09c9a765b8eaf9e7553fa399c51a

    SHA512

    574da2473316481f8d279be36f9e6f1199546c741ff8d5247d9d250c2d32d9f35df109abfc18cbf6031991749c30443cdb62e62c523229447adbf5ac3680875f

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

    Filesize

    170B

    MD5

    6611da73fe0e90472626e64ea6d1e2ea

    SHA1

    e8f7c22538820986e1ce1225ee49359bfed76f92

    SHA256

    7274bde6f6f0cd149dbe90c8b7444c10182c08b97b752cceb0a2e582885ac6ca

    SHA512

    487d2d4547f63b2e4d555b99bf65f0ddb0a905b0e742273c73c830fe7f1547953c4ae0039aedba533ec9920f8a8bfcc3c6761cfc66afa4f5502042118417f625

  • C:\Users\Admin\AppData\Local\Temp\Cab906.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\e0ead216-7265-4efb-8d99-2d7e775a9999\5c171af1b9174fd62c8a9e3f2de9df00N.exe

    Filesize

    888KB

    MD5

    5c171af1b9174fd62c8a9e3f2de9df00

    SHA1

    88586368c833ce427e3e28af0a7bd5a18b0add4c

    SHA256

    856fed29facb17f62dd6449b1cfabe65de2b8cb478e52417e7c0069bde7db864

    SHA512

    5675000af023d8c2f1c4c9091f4356178ec2c8975f66ad259483ea02c9bf458280449143d64ad13ec2b65f81380da80eb7a835546752fbbfa1c917f5553f4af1

  • memory/1700-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1700-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2100-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2100-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2100-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2100-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2100-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2820-34-0x0000000000400000-0x00000000004DE000-memory.dmp

    Filesize

    888KB

  • memory/2820-28-0x00000000002E0000-0x0000000000372000-memory.dmp

    Filesize

    584KB

  • memory/2956-0-0x0000000000300000-0x0000000000392000-memory.dmp

    Filesize

    584KB

  • memory/2956-1-0x0000000000300000-0x0000000000392000-memory.dmp

    Filesize

    584KB

  • memory/2956-5-0x0000000001EB0000-0x0000000001FCB000-memory.dmp

    Filesize

    1.1MB

  • memory/2956-7-0x0000000000300000-0x0000000000392000-memory.dmp

    Filesize

    584KB