Analysis

  • max time kernel
    98s
  • max time network
    150s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    07/10/2022, 17:40

General

  • Target

    d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe

  • Size

    786KB

  • MD5

    bdace88d62f56b1725c1796c6e472df9

  • SHA1

    386d4019babcf784bda753a5a79236973fc19a9b

  • SHA256

    d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d

  • SHA512

    1fd9608fe1eb4abe42a80f0ec972e968676fddb79641250ca5197069e476ff0014b9247f4cef42ac05abaf842848130fec7ab9de61d8586889f9f7a2338ad943

  • SSDEEP

    12288:0T4ZihTv5t7JkIdMsm2vtqtFU8ohgNXGbtMUwKLvuhpQdJi/Ds3Bunnou:05J5Lk533tFU8vXhUXvuhqXi/Ds3K

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .towz

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • payload_url

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

    http://winnlinne.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. You can get and look video overview decrypt tool: https://we.tl/t-Kbx8mJatqN 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: 0577Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe
    "C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4236
    • C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe
      "C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5092
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4c99845d-4521-4dd6-b694-4c3279cf83e9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1228
      • C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe
        "C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3984
        • C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe
          "C:\Users\Admin\AppData\Local\Temp\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4448
          • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe
            "C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4756
            • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe
              "C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2392
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 1676
                7⤵
                • Program crash
                PID:2120
          • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build3.exe
            "C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:60
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:816
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1096

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\4c99845d-4521-4dd6-b694-4c3279cf83e9\d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d.exe

          Filesize

          786KB

          MD5

          bdace88d62f56b1725c1796c6e472df9

          SHA1

          386d4019babcf784bda753a5a79236973fc19a9b

          SHA256

          d6a804ff78a12b25128cc7416ba9fc4c56ed47a88261ab277fb34d43d1fe7c9d

          SHA512

          1fd9608fe1eb4abe42a80f0ec972e968676fddb79641250ca5197069e476ff0014b9247f4cef42ac05abaf842848130fec7ab9de61d8586889f9f7a2338ad943

        • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\f338a8ad-42a0-48da-88b6-5fcfe8fd744c\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • \ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • \ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • memory/2392-486-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/2392-545-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/4236-129-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-134-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-136-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-138-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-137-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-139-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-140-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-142-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-143-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-144-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-145-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-146-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-147-0x0000000002120000-0x00000000021B7000-memory.dmp

          Filesize

          604KB

        • memory/4236-148-0x00000000022D0000-0x00000000023EB000-memory.dmp

          Filesize

          1.1MB

        • memory/4236-149-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-119-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-120-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-135-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-133-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-132-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-131-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-121-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-130-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-122-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-128-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-127-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-126-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-125-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-124-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4236-123-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/4448-544-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4448-318-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5092-159-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-169-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-170-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-163-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-172-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-171-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-173-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-174-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-175-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-176-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-177-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-178-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-179-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-180-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-181-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-182-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-183-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-184-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-185-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-168-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-167-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-166-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-164-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-165-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-162-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-161-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-160-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-158-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-157-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5092-156-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-155-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-154-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-153-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-152-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-150-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5092-186-0x0000000076E80000-0x000000007700E000-memory.dmp

          Filesize

          1.6MB

        • memory/5092-196-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5092-236-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB