Analysis

  • max time kernel
    70s
  • max time network
    151s
  • 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, 22:30

General

  • Target

    ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe

  • Size

    791KB

  • MD5

    b0ebd38bb13a6b4e1877a27e7f9c31ef

  • SHA1

    822e2f160613fe706af51ab56fa5fa8e4eb88164

  • SHA256

    ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6

  • SHA512

    932eef01bf89bf2b816bad0eaa89406630c3ced7ebf45534a490b279d356f2389adfdd40553e2e08c6c8b50c76c3243f63f69db3e5f0d47495b0dd034d0d544c

  • SSDEEP

    12288:tdLECoQjQnq3infTsGkpxWqAOhqWbZV3MhJtMAviazUTnE5mPgJ4IE8p:tdLE9QC1bsGex7bZqhPMXpE5mYJ4IE8

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\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe
    "C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe
      "C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3164
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\502b0181-8a65-4c48-99c4-f22b6d26db3b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2188
      • C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe
        "C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3404
        • C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe
          "C:\Users\Admin\AppData\Local\Temp\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4228
          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe
            "C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3464
            • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe
              "C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\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:2656
              • 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\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4216
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1824
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1292
          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build3.exe
            "C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:968
            • 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:4616
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2656 -ip 2656
    1⤵
      PID:4708
    • 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:1612
      • 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:1312

    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

            a6cc131998232d1b46a293b6a581fc30

            SHA1

            68fa9a65422aec50c33db1b296dcf257113db4e7

            SHA256

            e72cc8f19ffe48764a123be978b74b18efa0599cbac0ff072413c025320a6466

            SHA512

            6ca2ffebdf78780f85b81388087751da6d3ebf1286bbd1d69038e0fc78d2b1b052de0d0d060e56af597c2fe990d68cd397d37745a96ff51757171b37c1a44441

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

            Filesize

            482B

            MD5

            ae5bff782e91eaa31de42568fa91eeec

            SHA1

            e3163f01998383cad205ad3a1bdcb29267322eab

            SHA256

            82bb60b293ae556783e769b66ee46d9ce6d72a29a9d75b75fc37ab0584901dda

            SHA512

            7c9901cf200a233dcdb32c96484a389696a4cfd39a92c6255a97edbc30db7c45f852c654bc1da31a05795f119e02d5f3b1a283e9b0970e7801c8c32feb264292

          • C:\Users\Admin\AppData\Local\502b0181-8a65-4c48-99c4-f22b6d26db3b\ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6.exe

            Filesize

            791KB

            MD5

            b0ebd38bb13a6b4e1877a27e7f9c31ef

            SHA1

            822e2f160613fe706af51ab56fa5fa8e4eb88164

            SHA256

            ca21a0e0cc18e47454e1fa793f0c709da65c97026d0527342bef70df67ac02f6

            SHA512

            932eef01bf89bf2b816bad0eaa89406630c3ced7ebf45534a490b279d356f2389adfdd40553e2e08c6c8b50c76c3243f63f69db3e5f0d47495b0dd034d0d544c

          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build2.exe

            Filesize

            418KB

            MD5

            bc47d3a0d4a74adc40b3a7035344becb

            SHA1

            dd80bbe70106b62ea58924173a364cc936a0b1f4

            SHA256

            06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169

            SHA512

            4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4

          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\build3.exe

            Filesize

            9KB

            MD5

            9ead10c08e72ae41921191f8db39bc16

            SHA1

            abe3bce01cd34afc88e2c838173f8c2bd0090ae1

            SHA256

            8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

            SHA512

            aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

          • C:\Users\Admin\AppData\Local\9e10c0b7-a1b6-427f-84b1-98fe6af33b9b\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/1264-132-0x00000000004D4000-0x0000000000566000-memory.dmp

            Filesize

            584KB

          • memory/1264-133-0x0000000002220000-0x000000000233B000-memory.dmp

            Filesize

            1.1MB

          • memory/2656-167-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/2656-192-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/2656-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/2656-168-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/2656-166-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/2656-163-0x0000000000400000-0x000000000045B000-memory.dmp

            Filesize

            364KB

          • memory/3164-137-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3164-136-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3164-135-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3164-138-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3164-142-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3404-146-0x00000000005A7000-0x0000000000639000-memory.dmp

            Filesize

            584KB

          • memory/3464-162-0x00000000008D0000-0x0000000000917000-memory.dmp

            Filesize

            284KB

          • memory/3464-160-0x00000000006EE000-0x0000000000717000-memory.dmp

            Filesize

            164KB

          • memory/3464-165-0x00000000006EE000-0x0000000000717000-memory.dmp

            Filesize

            164KB

          • memory/4228-173-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4228-145-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4228-147-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4228-152-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB