Analysis

  • max time kernel
    141s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/05/2025, 20:32

General

  • Target

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

  • Size

    983KB

  • MD5

    e15e3cfa542459e8d87e8bfdf70a38a1

  • SHA1

    1c98fbf7b780fc8ab7f73d468ab77b41570c9665

  • SHA256

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

  • SHA512

    fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

  • SSDEEP

    24576:Fp90jN2CdssXMZ/ggHEfsLJ4qFKqyqG5nFYR1t:N0NDdssygGl94qFKqyqYa

Malware Config

Extracted

Family

djvu

C2

http://dell1.ug/hosuhf37t5iqy3guygg6w4guiner/37tiuywgw/get.php

Attributes
  • extension

    .meds

  • offline_id

    Pq9d1D32xIxjAlRK7OkLl3utdbWN8syVVEm35xt1

  • payload_url

    http://dell1.ug/files/cost/updatewin1.exe

    http://dell1.ug/files/cost/updatewin2.exe

    http://dell1.ug/files/cost/updatewin.exe

    http://dell1.ug/files/cost/3.exe

    http://dell1.ug/files/cost/4.exe

    http://dell1.ug/files/cost/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like photos, 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-ZFjRnJfc9f 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: 162Ad768734uygjdfg

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
    "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\b420e57d-8dea-4965-80e7-c32c5c16f804" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:464
    • C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
      "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4520
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1808 -s 2136
      2⤵
      • Program crash
      PID:1544
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1808 -ip 1808
    1⤵
      PID:4424

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

            Filesize

            1KB

            MD5

            4a90329071ae30b759d279cca342b0a6

            SHA1

            0ac7c4f3357ce87f37a3a112d6878051c875eda5

            SHA256

            fb6a7c3edcd7b97fabc18855102a39fc4d6d3f82c0fdd39b1667807b71b9c49b

            SHA512

            f0e206053d4369437c2c0f1f90f0fd03d631e4b9859d807049b41efde823d64cf4d75c28316d932360f7c03bd409e923c8bc2d4f5959361feacecfcf101ae823

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

            Filesize

            530B

            MD5

            1fbb37f79b317a9a248e7c4ce4f5bac5

            SHA1

            0ff4d709ebf17be0c28e66dc8bf74672ca28362a

            SHA256

            6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9

            SHA512

            287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

            Filesize

            174B

            MD5

            af6f1d2e1a1d2c0bda598413b4cd0b49

            SHA1

            88edcbdf77aa83ef4d5127a216845ec3aa2c8b31

            SHA256

            9f9d780b6ee56715c2c3cbc4bb99ced4a89edb25f12f50435ab0032a78cb0406

            SHA512

            b85e684cedbd58ad4a602c158a570ce711a5e87f5f09f2f83a5ceaa76e2e236d517bbcdb12e66ff1ac67a655e947112b72d87cb746bb687f4e24e102f9258703

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

            Filesize

            170B

            MD5

            d6c7c70bdf69c732e038cdf60abe5d20

            SHA1

            1e327c3ab37739911a263d0423511aed5543679c

            SHA256

            ef416b7f80802bc9184a7a6d71ad7729be4a4a148a4b3fff8af3e9f243a4eb42

            SHA512

            feb68f065cae92b0a3ed727e5d7a4c8591f4dc51ac9279cef17c31767fd6e5105aa7e22859f430ed7b787f7d34fbd0b8baf4029966ab48ec8637b33e75f2794d

          • C:\Users\Admin\AppData\Local\b420e57d-8dea-4965-80e7-c32c5c16f804\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

            Filesize

            983KB

            MD5

            e15e3cfa542459e8d87e8bfdf70a38a1

            SHA1

            1c98fbf7b780fc8ab7f73d468ab77b41570c9665

            SHA256

            c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

            SHA512

            fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

          • memory/1808-3-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1808-2-0x0000000002410000-0x000000000252A000-memory.dmp

            Filesize

            1.1MB

          • memory/1808-1-0x0000000002340000-0x0000000002407000-memory.dmp

            Filesize

            796KB

          • memory/1808-21-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1808-22-0x0000000002410000-0x000000000252A000-memory.dmp

            Filesize

            1.1MB

          • memory/4520-15-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4520-16-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4520-23-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4520-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4520-28-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB