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Analysis

  • max time kernel
    94s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2024, 10:30

General

  • Target

    d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe

  • Size

    815KB

  • MD5

    e77149a738df525f2af09d73c0158662

  • SHA1

    f044840a18c70c1a443b3f13f5a28c13a5f6f9c2

  • SHA256

    d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506

  • SHA512

    46ab52a6d817f0d53009ccf8c7256a3d7755bef1064073c726a689cfa1bf172f1ec6017b2a5e941548b73289e125acb9eb0a33fa787198a83d1d32769a657fdc

  • SSDEEP

    12288:xq/uQD+rddH+kvKDcOfMZ3e9NIlFPJDe2LNZnV9ijsuynzNbOAGWsczLrkm:qDA5CDdQe9WlFPJq22MRlo0rk

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test1/get.php

Attributes
  • extension

    .vvew

  • offline_id

    rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1

  • payload_url

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

    http://acacaca.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-QsoSRIeAK6 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: 0530Jhyjd

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 2 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).

  • Program crash 1 IoCs
  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
    "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3604
    • C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
      "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\bcd751cf-6f64-4bf4-a650-476f0c50f2f5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2764
      • C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
        "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2804
        • C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe
          "C:\Users\Admin\AppData\Local\Temp\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          PID:404
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 584
            5⤵
            • Program crash
            PID:3608
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 404 -ip 404
    1⤵
      PID:3088

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\bcd751cf-6f64-4bf4-a650-476f0c50f2f5\d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506.exe

      Filesize

      815KB

      MD5

      e77149a738df525f2af09d73c0158662

      SHA1

      f044840a18c70c1a443b3f13f5a28c13a5f6f9c2

      SHA256

      d98e338f32b35399becc7cacde575aec780b828bbf88021078be685fb3937506

      SHA512

      46ab52a6d817f0d53009ccf8c7256a3d7755bef1064073c726a689cfa1bf172f1ec6017b2a5e941548b73289e125acb9eb0a33fa787198a83d1d32769a657fdc

    • memory/404-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/404-20-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/404-24-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2804-18-0x0000000000400000-0x00000000004D9000-memory.dmp

      Filesize

      868KB

    • memory/2804-21-0x0000000000400000-0x00000000004D9000-memory.dmp

      Filesize

      868KB

    • memory/3604-2-0x00000000022E0000-0x00000000023FB000-memory.dmp

      Filesize

      1.1MB

    • memory/3604-1-0x0000000000790000-0x0000000000831000-memory.dmp

      Filesize

      644KB

    • memory/4152-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4152-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4152-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4152-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4152-15-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB