Analysis

  • max time kernel
    79s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2022, 08:42

General

  • Target

    file.exe

  • Size

    663KB

  • MD5

    a54364a9cfb0432b809edb31eff09060

  • SHA1

    57480ed8ca4cc175f1bcabf76e6af29c9ed72e95

  • SHA256

    17b039e4983a63603f4870bcd36e7be0e08b86a9aa84601b49d76fa7f6613482

  • SHA512

    39e7b3a222aeb0c53b2c4737c2a331e05b4cb57a068435665dc78533ec96619800540b6e2b6869884c9f27809c31f41e81895f28b6529cb00d83753dcda7ec22

  • SSDEEP

    12288:QTtqle8To+CrQ7+1hyNMsjOvy9W+z+naY1AFB+gxry3ohs+ybF6:QT0c8EzUNb6vy9ptY1AGq23o6+OF6

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • 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-EWKSsSJiVn 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: 0568Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.7

Botnet

517

C2

https://t.me/trampapanam

https://nerdculture.de/@yoxhyp

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 10 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
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • 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.

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2520
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\134f28b6-35f6-4209-b2bc-0fedd791b8dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:404
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2076
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1848
          • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe
            "C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:728
            • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe
              "C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4104
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" S/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:452
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:216
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3924
          • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build3.exe
            "C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3392
            • 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:4456
  • 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:256
    • 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:2120

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          2KB

          MD5

          5f0a548198075b4cd8c891c5c0f45e4c

          SHA1

          c3dd48a91f5a4dfbecd2a9e5802a8e5d8623aab6

          SHA256

          bcb8d4f0e605ffe557f9f3d23291e2212f39acfa1df9f24331a4075810555839

          SHA512

          8ade693197f9ca350f7c549312de77d70ef362dd3772a9ebb86c30dc7311d047bac0b9e1b517001b4e470271f7f181313f87eeae5b7a71ec5b7be5380525e22f

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          1KB

          MD5

          cb19ea31ccbd0203dd87e096916c57fa

          SHA1

          cab9da6765c414006fc24a26afe3d9faed3da46c

          SHA256

          f2c2e4c4cb0138ea54016a5b4e248a37f10c3ce22ad3ac85f8509a9692d0394b

          SHA512

          20b5e6d75aa6340e47bb723541ede1ca9a54b8df916e3b9ae6e27ae869dfd13605feb400e0c847974594e126b9852dcb1785f55fc93ba10abcdef93ef71f5b36

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

          Filesize

          488B

          MD5

          821a1322a914acc67f5e74818fee9a28

          SHA1

          cbdc1c5a29023acd564d6dfca15ad2836148ba22

          SHA256

          12eabe4e40d63684081561a4f3bacabac4ecad9c6ca7de848f093fbdc16f8944

          SHA512

          6acf7f58cafeb87c5ec815b6eeb3a2b41a2c7f1a07171a7d4f1840642a456b73c9f55424ef3dd55abc603b4167281a031a6057c7573004e3c5dfe364b3c8551b

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

          Filesize

          482B

          MD5

          0f045b2e5449839e1ccd577dc96ab00b

          SHA1

          731b291e1c1a9b5a88cec250324c824c501ca9fc

          SHA256

          621c9e2a50db237f61e334c2f6624574774b618b8ef4003e11ca25dd2476fba2

          SHA512

          caa587fbf122e918d41634be1bb8d34a9c9947a211e743e05d9293abc32de601ad6434fc98fbbb303b71ddd0b540923248e35c008ed91e3effb53c286f65092d

        • C:\Users\Admin\AppData\Local\134f28b6-35f6-4209-b2bc-0fedd791b8dc\file.exe

          Filesize

          663KB

          MD5

          a54364a9cfb0432b809edb31eff09060

          SHA1

          57480ed8ca4cc175f1bcabf76e6af29c9ed72e95

          SHA256

          17b039e4983a63603f4870bcd36e7be0e08b86a9aa84601b49d76fa7f6613482

          SHA512

          39e7b3a222aeb0c53b2c4737c2a331e05b4cb57a068435665dc78533ec96619800540b6e2b6869884c9f27809c31f41e81895f28b6529cb00d83753dcda7ec22

        • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\72d08918-8b66-4005-97d1-68961abcb97d\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

        • memory/728-167-0x00000000005E0000-0x0000000000627000-memory.dmp

          Filesize

          284KB

        • memory/728-166-0x000000000068E000-0x00000000006B7000-memory.dmp

          Filesize

          164KB

        • memory/1848-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1848-153-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1848-146-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1848-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2076-144-0x0000000002305000-0x0000000002396000-memory.dmp

          Filesize

          580KB

        • memory/2520-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2520-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2520-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2520-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2520-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3980-135-0x0000000002218000-0x00000000022A9000-memory.dmp

          Filesize

          580KB

        • memory/3980-136-0x0000000002310000-0x000000000242B000-memory.dmp

          Filesize

          1.1MB

        • memory/4104-168-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4104-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4104-162-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4104-165-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4104-190-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4104-164-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB