Analysis

  • max time kernel
    145s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 05:47

General

  • Target

    f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe

  • Size

    771KB

  • MD5

    1be477c579869b30cd8f9ec09e2611b3

  • SHA1

    897d59324c868c1d194dd0107212d119b15aa76a

  • SHA256

    f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56

  • SHA512

    23236d3b8f3452155496e9097aad21c9b9f9c06a1379a1cb819445d265b21a1cb2f859f5672c6e3e57e7ac7fef6b0ab25271e47202582b2f3c43a39d27e6c4df

  • SSDEEP

    12288:r+c8FbuiWKbuolBBIxEon4AdBCYg1CONb/2k04NrQwLJw9JM1y4V7vlci7i:sWKbLBoEon4AuCOti7SJOCy4dvlde

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 18 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\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
    "C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3844
    • C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
      "C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6c6f50c6-94dc-43f9-82d4-078781cb920c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1580
      • C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
        "C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3848
        • C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
          "C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3524
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4100 --field-trial-handle=2272,i,1589057049575649654,2929151440327217574,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5052

    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

            580071ebd24cccfd9268e1474bb8134e

            SHA1

            443665efe7009fe1d4c5bc4786dc9cc540e59ef6

            SHA256

            53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461

            SHA512

            13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4

          • 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

            bf6f6f176423b09787a1873bf23c274c

            SHA1

            dbccaba0f8aaf8fbcdce68be95a448c37e2c0862

            SHA256

            8511fa724d5a671de9d9363db135c9c98acaa7f43a68559d838f33f1d53050f5

            SHA512

            11e04ad8ba3298e5b8f640abe4b7aa2286f6a6975e90cfee9513ec62bc325636ed92ec61a36a33bd071b9481bd0e45b2c995046c1e911088b6a331bedd132465

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

            Filesize

            392B

            MD5

            32d86da12646fec4aceda05749f4808c

            SHA1

            74e7ed910d4c9653b3f8b1b9ce3aedbeee9e0057

            SHA256

            830b2742a3eb075ce0db0606bed617989cc0669311acaac0c2380ae208f01d23

            SHA512

            3267901e354f724071fad18e79ef3d6231f6b31f7da4350c1205a7bcf6db82aa60a339a8156bba128dfe39ba456b375061f84dce05fc18e2cf01860f51588d7f

          • C:\Users\Admin\AppData\Local\6c6f50c6-94dc-43f9-82d4-078781cb920c\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe

            Filesize

            771KB

            MD5

            1be477c579869b30cd8f9ec09e2611b3

            SHA1

            897d59324c868c1d194dd0107212d119b15aa76a

            SHA256

            f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56

            SHA512

            23236d3b8f3452155496e9097aad21c9b9f9c06a1379a1cb819445d265b21a1cb2f859f5672c6e3e57e7ac7fef6b0ab25271e47202582b2f3c43a39d27e6c4df

          • memory/2992-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2992-3-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2992-16-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2992-4-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2992-6-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-20-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-34-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-21-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-37-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-36-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-35-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-28-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-29-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-32-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3524-22-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3844-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp

            Filesize

            1.1MB

          • memory/3844-1-0x0000000004AF0000-0x0000000004B85000-memory.dmp

            Filesize

            596KB

          • memory/3848-19-0x00000000048E0000-0x0000000004977000-memory.dmp

            Filesize

            604KB