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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