Analysis

  • max time kernel
    143s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 19:56

General

  • Target

    79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe

  • Size

    819KB

  • MD5

    cabc5d4f81025ea43f2477adb2e2627d

  • SHA1

    f4273023a6efe7896d1f6ef9ba1ad5c04e7fe3a7

  • SHA256

    79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b

  • SHA512

    f97a6c0d32ed8bbdeacf29a1a9f84458bc26801b86504a90594652aef2cbce30cfc96407c453d171f1d3072a7e402bd26871f1fdd3e41e5a5143576b17e4ad4f

  • SSDEEP

    12288:N3d+kz5MNm50f2CBKi0yau4QmZj7UIFZbtEsWKm6NZwt2warGT2XgnWr:N3GmyPMyau4jZ3JZCsw6ot2E2w2

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .uajs

  • offline_id

    Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1

  • payload_url

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

    http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 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 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\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
    "C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
      "C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2848
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\68012a70-3a11-4ed5-b6c2-ff58a39a1b12" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3732
      • C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
        "C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:812
        • C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe
          "C:\Users\Admin\AppData\Local\Temp\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2188

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

    3c6a98dff2c8e5d41183fb934602bccf

    SHA1

    389eea4f6c8b9a19dd6efd65b2c979feeb4262a7

    SHA256

    8c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8

    SHA512

    fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd

  • 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

    5ef3c52b977a64e856381950e6ad7d14

    SHA1

    2f302e79ed27952c3d558fc8c44080a6308ddbb6

    SHA256

    3db56af8bcd35aef1f0942cd429003b135cd0c40c915ad43cdcaa9fa178649d0

    SHA512

    a0cf4c19c9b6c6185a967846fc7840bc1cd18cd05ba61775a1be795a771baf33d7add1df0b35a5dc6ad37808e6209ab7b027d465bb0e8e90191103596945e26e

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

    Filesize

    392B

    MD5

    6b3319425a05670ca0e7a748830b9c33

    SHA1

    616704b9907bd8809a8cff8cdaea574b17b2eb64

    SHA256

    a1b0b92b65dbafded44431600167c09d14f41e524c680c6ea1f6f3ea78345914

    SHA512

    9f7049f5ea3aceeb333476fe4cf452ad6139c676379c11eb4c45fa22dd166b3515874176611a41ebbb86cdfad9ec407014f8ea4a306034fdfaa603b3e2169b62

  • C:\Users\Admin\AppData\Local\68012a70-3a11-4ed5-b6c2-ff58a39a1b12\79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b.exe

    Filesize

    819KB

    MD5

    cabc5d4f81025ea43f2477adb2e2627d

    SHA1

    f4273023a6efe7896d1f6ef9ba1ad5c04e7fe3a7

    SHA256

    79147711755a81a678f0ae1de32757babf1ce43ad8f9375a36bfde621e86ed6b

    SHA512

    f97a6c0d32ed8bbdeacf29a1a9f84458bc26801b86504a90594652aef2cbce30cfc96407c453d171f1d3072a7e402bd26871f1fdd3e41e5a5143576b17e4ad4f

  • memory/812-20-0x00000000049C0000-0x0000000004A53000-memory.dmp

    Filesize

    588KB

  • memory/2188-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2848-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2848-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2848-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2848-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4004-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp

    Filesize

    1.1MB

  • memory/4004-1-0x0000000004AF0000-0x0000000004B8A000-memory.dmp

    Filesize

    616KB