Analysis

  • max time kernel
    72s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 19:10

General

  • Target

    94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe

  • Size

    800KB

  • MD5

    8f74eab004ff0a59da2a9f90903b556e

  • SHA1

    f88e69f4e663ac1770d7c641fc4690496b1c8695

  • SHA256

    94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13

  • SHA512

    920e5db7d647503e1490010c434bab9b57f7e0053a1754b743c54abb3b7dc38b60bd85106f21bf1c8d993c2791daf469dc8c5754f98bf2b49ba805e823af58dd

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/fhsgtsspen6/get.php

Attributes
  • extension

    .fdcv

  • offline_id

    eBNgvyGQV1Hmt9DBdxVRs8qPi1agsS7OaohPmit1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://ugll.org/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. You can get and look video overview decrypt tool: https://we.tl/t-j3AdKrnQie Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0483JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 8 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • Checks computer location settings 2 TTPs 2 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). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe
    "C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe
      "C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4332
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\caea9d75-12b7-44f7-8d1d-c4e2f4335e75" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4504
      • C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe
        "C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4596
        • C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe
          "C:\Users\Admin\AppData\Local\Temp\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          PID:4708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    727B

    MD5

    93995ad095112907cfc088998c161574

    SHA1

    518c7127e11809bb74ff0f68ea7e86ea5aebc798

    SHA256

    fd16d238bcac3441688e7ca940c27bb02df8f0bf43b26d8e551414a18748c1cc

    SHA512

    c2a3153c65f0acbc821bf663b38591821402d9a00680e2e22f410bf1735752194c08b96f77b7e6712082584a8b6605f7ab9552ad2f6c193fbd13c90bb60436e9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    471B

    MD5

    c04f441d0220712231531a90823834db

    SHA1

    68dd18f1e0c51f1fdc4621394091a2dad08e4a08

    SHA256

    055641d3987ae98e2dd627d3214ea8084ae773a3df9592191b86977c752a29e7

    SHA512

    3156cf79585a45d919d4b27da4fe860f06e3206961fe1d20347ad74ef17de81c47857f35acd5cda3fae5ade28ab9747529ea3e8e79ca80aaf98e1f0e852bed53

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    402B

    MD5

    a1e7e3e99dc690dcad1e00964793792f

    SHA1

    92bfb4b48078395ba369ffa93259983baece4b9a

    SHA256

    de43ade612f6ba45e5b884757675699757f9e30838bd13a8d7dbc2ae4e0602a9

    SHA512

    3a41e0eb2d79d6dd8ea4b0bda4c030d36f87a8bfc330d4cf645802a2fbe5b175ce87cf6a2d2c441a85ec7e759e10cf3a69a83886a1ba1106624f16753caafa29

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    396B

    MD5

    2c343c8572b62bb7047f9d3f423fd7fd

    SHA1

    49f364fb9aac862e7e4ce33c48bd8ea99b22b119

    SHA256

    79270601dddd76f903c8b650d2327374f88ee03a0ff904503db68e4d3ac50e66

    SHA512

    12e4382da8a11d64f6c96ed3663b5ddad2a749ec07d98eb306f07617a38c1ef2fcd0cd3ef222f78b0ef1aacc6201fc720cb9dedc6183f88ef9fc773a9c0b7387

  • C:\Users\Admin\AppData\Local\caea9d75-12b7-44f7-8d1d-c4e2f4335e75\94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13.exe

    Filesize

    800KB

    MD5

    8f74eab004ff0a59da2a9f90903b556e

    SHA1

    f88e69f4e663ac1770d7c641fc4690496b1c8695

    SHA256

    94bc57c45f40bcff61c01653a7c7f0b20e82a2dd9ce3fee9187a4d341b4e7c13

    SHA512

    920e5db7d647503e1490010c434bab9b57f7e0053a1754b743c54abb3b7dc38b60bd85106f21bf1c8d993c2791daf469dc8c5754f98bf2b49ba805e823af58dd

  • memory/1776-134-0x00000000048A0000-0x00000000049BB000-memory.dmp

    Filesize

    1.1MB

  • memory/1776-133-0x0000000002D51000-0x0000000002DE3000-memory.dmp

    Filesize

    584KB

  • memory/4332-130-0x0000000000000000-mapping.dmp

  • memory/4332-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4332-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4332-131-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4332-132-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4504-137-0x0000000000000000-mapping.dmp

  • memory/4596-139-0x0000000000000000-mapping.dmp

  • memory/4596-143-0x00000000048BE000-0x0000000004950000-memory.dmp

    Filesize

    584KB

  • memory/4708-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4708-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4708-140-0x0000000000000000-mapping.dmp

  • memory/4708-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB