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Analysis

  • max time kernel
    297s
  • max time network
    244s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-08-2024 18:04

General

  • Target

    32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe

  • Size

    844KB

  • MD5

    a6f049a056e37a65280ddfe17f689b50

  • SHA1

    479e08954d4d58b643ada84da280bd01c71e779a

  • SHA256

    32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08

  • SHA512

    f7effb9a12c0723ed336117e3399940d4fe9e3682eec18cdf19cf074dab27d2ce8b1c14d30f1e3e26b5883732f8b970477a32ca4c12fe36a8fa3bc452586511b

  • SSDEEP

    24576:40bAk9PkFMVNgsbj6d2dXrpcpZBWGyDs1lwBUeF:PEGNgsnHDIZB/yDseB

Malware Config

Extracted

Family

djvu

C2

http://asvb.top/nddddhsspen6/get.php

Attributes
  • extension

    .ehiz

  • offline_id

    94ZMASYQt4QGhpOo8gEwVMGuTvtKzw670thXUlt1

  • payload_url

    http://asvb.top/files/penelop/updatewin1.exe

    http://asvb.top/files/penelop/updatewin2.exe

    http://asvb.top/files/penelop/updatewin.exe

    http://asvb.top/files/penelop/3.exe

    http://asvb.top/files/penelop/4.exe

    http://asvb.top/files/penelop/5.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-IMhsjaUZQE 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: 0299ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Renames multiple (152) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • 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 3 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 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
    "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
      "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.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:3752
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3828
      • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
        "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1664
        • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
          "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4344
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 568
            5⤵
            • Program crash
            PID:4164
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4344 -ip 4344
    1⤵
      PID:4332
    • C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
      C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe --Task
      1⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3452
      • C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
        C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe --Task
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4560

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1KB

      MD5

      7fb5fa1534dcf77f2125b2403b30a0ee

      SHA1

      365d96812a69ac0a4611ea4b70a3f306576cc3ea

      SHA256

      33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

      SHA512

      a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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

      Filesize

      436B

      MD5

      971c514f84bba0785f80aa1c23edfd79

      SHA1

      732acea710a87530c6b08ecdf32a110d254a54c8

      SHA256

      f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

      SHA512

      43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

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

      Filesize

      174B

      MD5

      1fe9840083f2aa62ba78f53e07e7e274

      SHA1

      b7084ca834c30e48ba6302c498f69158ae2f8cce

      SHA256

      a204b36897efa6ff1a7d8fc73efa856c6330bb7bd978cc830208f2d4ed19e41e

      SHA512

      4c80506ed572ea36454eb54f062b6020a3fbbf972068418a05fe55538981c49479269e92ceb3e9f8ac0ea792d1aa76bd94f5c127b549a53b0592b09c392d4564

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

      Filesize

      170B

      MD5

      36abc709e9c3f69e17c4f0d2693a552b

      SHA1

      8ac762a6dcd4653244ed8eece3680efc4800b7d4

      SHA256

      829c571cd6249a9d493a1d521d091caec62252de75317fdf63eefe0c6a623191

      SHA512

      52e51179630b62731932ab5659557099d0fe9cb1f53f9adc2d214a9c532e90db86b32bf5626522817ef9424f02068f9511b859e3aa83667a89eaa46dafa12b28

    • C:\Users\Admin\AppData\Local\a76bbf20-66fa-4c87-a6b5-2d62c2bc396f\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe

      Filesize

      844KB

      MD5

      a6f049a056e37a65280ddfe17f689b50

      SHA1

      479e08954d4d58b643ada84da280bd01c71e779a

      SHA256

      32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08

      SHA512

      f7effb9a12c0723ed336117e3399940d4fe9e3682eec18cdf19cf074dab27d2ce8b1c14d30f1e3e26b5883732f8b970477a32ca4c12fe36a8fa3bc452586511b

    • memory/576-1-0x00000000022A0000-0x0000000002336000-memory.dmp

      Filesize

      600KB

    • memory/576-2-0x0000000002340000-0x000000000245B000-memory.dmp

      Filesize

      1.1MB

    • memory/1664-23-0x0000000000400000-0x00000000004DC000-memory.dmp

      Filesize

      880KB

    • memory/1664-21-0x0000000000400000-0x00000000004DC000-memory.dmp

      Filesize

      880KB

    • memory/3452-34-0x0000000000400000-0x00000000004DC000-memory.dmp

      Filesize

      880KB

    • memory/3452-35-0x0000000000400000-0x00000000004DC000-memory.dmp

      Filesize

      880KB

    • memory/3752-19-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3752-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3752-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3752-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3752-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4344-24-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4344-25-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4344-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-43-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-44-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-54-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-56-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-57-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-363-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4560-365-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB