Analysis

  • max time kernel
    67s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/09/2022, 12:30

General

  • Target

    2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe

  • Size

    815KB

  • MD5

    23e9fc09c94d96d722f1d30cb5846427

  • SHA1

    7507239f64df8f7f5ab4467bf77eb53a45ec02cf

  • SHA256

    2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5

  • SHA512

    e4498b51e28b8e3bb5e4bde36c4e7392c10bbfbbfececc7076241dc6035dfe5a04c66cd74b41e9a53641982ef5b943f0550f8c9eda7e167952427dda41bf4cf0

  • SSDEEP

    24576:4AjLj5HloPcrCwQDKhVcqL9OmH052Nng5+0XK:4ujtloPunOKX9fti+F

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test1/get.php

Attributes
  • extension

    .oflg

  • 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: 0566Jhyjd

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\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe
    "C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe
      "C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4124
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1531cc72-fa28-405c-bccb-d5c052bdab82" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4952
      • C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe
        "C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1860
        • C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe
          "C:\Users\Admin\AppData\Local\Temp\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4576
          • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe
            "C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2316
            • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe
              "C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\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:3888
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3212
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1456
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4048
          • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build3.exe
            "C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4480
            • 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:4856
  • 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:2760
    • 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:3816

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

          3229b6929fc9caec79e3e5ad740250c6

          SHA1

          d677cb89c767b4c4a444fedfa53dd6c8aa1d7d6e

          SHA256

          ece826b5b4484d173ea804773ca9a13c7248d2f6f3c8a7efeea2a9e3691d7628

          SHA512

          79b5ab3c41f03f913c0c947c6b6c66f396af97f7f69b3df72622beb9fddf8c6cc1a4f830d3edbd91ec570ce59531f09db54e51a2694a8b330ded69fd932036d1

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

          Filesize

          1KB

          MD5

          edcd4c783b2b2c906602519bd8f697f4

          SHA1

          fc56fded4065d6960c6507cac4264dfd2b038004

          SHA256

          367e0ac4e24f1d1530de05a6abf81d6b572c0546b5aa134c246fa1514582fd90

          SHA512

          cb23a82c06211121e39ed0dbec5928b1a85aca7c25f2c060d609350e3a94bf82e9159a2a4d5e67295fc29bac22c95d525ea2461a0000d24c6c4cb630520f68d0

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

          Filesize

          488B

          MD5

          818fb8c714c30d05f8620aa45f55313e

          SHA1

          839763fc5dc8bfe60ae3bbff6588d1f9629e7413

          SHA256

          ac807a083c36bae340687be95cfe6f02d7b9eebf7c7b6f97ce071a7af5ae5d12

          SHA512

          5d82ce9b063488f530fcc64947176e2fa3b648f7c9a13f8d955bc2ec5dfbd098f682aef9218a8401ecfa62e51a34559b8963a47c22fb10730a3ac72c4ad500b3

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

          Filesize

          482B

          MD5

          9b0dc2ae923b4d01026a9729c2bbeb6f

          SHA1

          db83101b52536585d403ba27ae245b996eefcab2

          SHA256

          f49fe25224b72fa49d65a8122795a0a42802e00fce0c2a2767512e3783628b15

          SHA512

          374edb75db1791d545d1e9703050a845c8c1d117e3d30d0ae17b70e148e11f32f4fb96f2ce71e8d0310d6fd7998e9b5dbb6e11a6538d0606f9e242253fe9d921

        • C:\Users\Admin\AppData\Local\1531cc72-fa28-405c-bccb-d5c052bdab82\2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5.exe

          Filesize

          815KB

          MD5

          23e9fc09c94d96d722f1d30cb5846427

          SHA1

          7507239f64df8f7f5ab4467bf77eb53a45ec02cf

          SHA256

          2bc4c745599cabc0265f52becdee3122c5f9a115d267a41db1b0bf4106a809d5

          SHA512

          e4498b51e28b8e3bb5e4bde36c4e7392c10bbfbbfececc7076241dc6035dfe5a04c66cd74b41e9a53641982ef5b943f0550f8c9eda7e167952427dda41bf4cf0

        • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build2.exe

          Filesize

          418KB

          MD5

          bc47d3a0d4a74adc40b3a7035344becb

          SHA1

          dd80bbe70106b62ea58924173a364cc936a0b1f4

          SHA256

          06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

          SHA512

          4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

        • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\b961517a-3840-4dc7-925c-347e346a0134\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/1860-146-0x00000000004EC000-0x000000000057E000-memory.dmp

          Filesize

          584KB

        • memory/2316-164-0x000000000057E000-0x00000000005A7000-memory.dmp

          Filesize

          164KB

        • memory/2316-166-0x0000000000510000-0x0000000000557000-memory.dmp

          Filesize

          284KB

        • memory/3888-161-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/3888-163-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/3888-190-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/3888-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/3888-167-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/3888-165-0x0000000000400000-0x000000000045B000-memory.dmp

          Filesize

          364KB

        • memory/4124-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4124-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4124-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4124-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4124-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-187-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4576-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4992-136-0x0000000002220000-0x000000000233B000-memory.dmp

          Filesize

          1.1MB

        • memory/4992-135-0x00000000005B7000-0x0000000000649000-memory.dmp

          Filesize

          584KB