Analysis

  • max time kernel
    299s
  • max time network
    255s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    21/09/2023, 04:26

General

  • Target

    4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe

  • Size

    708KB

  • MD5

    90228d871b2c33a61f8561e802629767

  • SHA1

    73a4513ef9a4aa8b9b2792c305116bbbf457f94f

  • SHA256

    4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77

  • SHA512

    89a3119b37a2fdbf1aecdeac9bf8be476388f821c27115b1c7a8b8875e748a070565cf83f6cfaf3953ae192ddb7024ff78ef7f192d2cea4c61dd7cf04040e963

  • SSDEEP

    12288:uXpnWz8u10xxf7rnvQSVP4Xf3AZ7Yokdu/mUpg759Gov/hlLazoQQ6:uZW4u10DzrvtVPofwZvpWLGo7eEQQ

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/raud/get.php

Attributes
  • extension

    .wwza

  • offline_id

    LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.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-xoUXGr6cqT 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: 0789JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.7

Botnet

5c0b4a12d6c03dd98ed431d3eded2169

C2

https://steamcommunity.com/profiles/76561199553369541

https://t.me/dastanatg

Attributes
  • profile_id_v2

    5c0b4a12d6c03dd98ed431d3eded2169

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_8) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Safari/605.1.75

Signatures

  • Detected Djvu ransomware 16 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
  • 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).

  • 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe
    "C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:404
    • C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe
      "C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:384
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b197918d-6a63-45f0-8694-c8df9d970ec7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5004
      • C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe
        "C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4872
        • C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe
          "C:\Users\Admin\AppData\Local\Temp\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1904
          • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe
            "C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4912
            • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe
              "C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3344
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2080
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:748
          • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build3.exe
            "C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3164
            • 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:3980
  • 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: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"
      2⤵
      • Creates scheduled task(s)
      PID:4268

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          2KB

          MD5

          ea42a7ee6b4feb94720dcd38dfaca03e

          SHA1

          09e132a3dad531f41d561f96e447107df3826c8d

          SHA256

          49024bbec636af6e8a88991af1f95df745755015ab8e0b9be1d9bcaa0c44aae9

          SHA512

          362de39769654d28579284463da7a5116f248ebf8b62f4fbe4a8f57a5d701c07dec3b3d8f35130cfd2307511117754cb8438922773e94812f7a84f974451d8fa

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

          Filesize

          1KB

          MD5

          5318d6a902beaba43fd3af656c2e3cb0

          SHA1

          0202ac2d3e3ad69f1456c6de198b462cdba0edda

          SHA256

          bad155252d58babc8824eb5e5bc5efd49ba946a2d7f2aaf27dae16d157c7646e

          SHA512

          14b17ce0850c83ade52982c2c3d3d65bc621c2c09dae2f84cd44890a560811d5c25627e582c7dfa544f2a05665562f48f3b2cc4941bac688242eb13ff0944cb7

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

          Filesize

          488B

          MD5

          a4de8ff5c525edb13cee9edc2d7e1423

          SHA1

          d5b2a9a9a44b72f0c9b20a2dcc6592f654e51104

          SHA256

          3a26a3d5db8301d4f18619d4235e03b52907c7762cf8198b2055c700371095f7

          SHA512

          4dc0ed0a9f741364075314e46a73a273d600a37316ed2a50d48a0ff4feefedaf310cc9f1f37dc6a962e00b9b68c46ec42c42511d97715708e8d65d2ccbd1b06d

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

          Filesize

          482B

          MD5

          42beec7226e41fc9f17ccc3fa09d9b42

          SHA1

          fac3532daeaafc3a824bd156597821a12c5ac014

          SHA256

          2f34aa731d8649687013ca25ae0556081dc801b062a87e005e51d601d3032a75

          SHA512

          b95c16577680ab97ddc5345c7e85af0952e8ee8db8d6b6154ff0a9bfa8e7d7d156647cfcecca395277823df452a0af9b82108e267a7ac7acd73feac6cbff842e

        • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe

          Filesize

          316KB

          MD5

          b298c49f1808cc5d93dcc3dfc088b10f

          SHA1

          c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

          SHA256

          ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

          SHA512

          1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

        • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe

          Filesize

          316KB

          MD5

          b298c49f1808cc5d93dcc3dfc088b10f

          SHA1

          c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

          SHA256

          ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

          SHA512

          1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

        • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build2.exe

          Filesize

          316KB

          MD5

          b298c49f1808cc5d93dcc3dfc088b10f

          SHA1

          c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

          SHA256

          ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

          SHA512

          1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

        • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\8089f3e4-5e09-48b0-acd7-19d50f78ca20\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\b197918d-6a63-45f0-8694-c8df9d970ec7\4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77.exe

          Filesize

          708KB

          MD5

          90228d871b2c33a61f8561e802629767

          SHA1

          73a4513ef9a4aa8b9b2792c305116bbbf457f94f

          SHA256

          4026eb53f017a6ee5d807054c0b3c2c4630edf525e1dd78e071426a1d0a99a77

          SHA512

          89a3119b37a2fdbf1aecdeac9bf8be476388f821c27115b1c7a8b8875e748a070565cf83f6cfaf3953ae192ddb7024ff78ef7f192d2cea4c61dd7cf04040e963

        • 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

        • 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/384-19-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/384-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/384-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/384-2-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/384-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/404-0-0x0000000002200000-0x0000000002292000-memory.dmp

          Filesize

          584KB

        • memory/404-4-0x0000000002200000-0x0000000002292000-memory.dmp

          Filesize

          584KB

        • memory/404-1-0x0000000002350000-0x000000000246B000-memory.dmp

          Filesize

          1.1MB

        • memory/1904-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-32-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-39-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-47-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1904-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3344-117-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-68-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-69-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-80-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/3344-67-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-64-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-118-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/3344-119-0x0000000000400000-0x0000000000465000-memory.dmp

          Filesize

          404KB

        • memory/4912-66-0x0000000000630000-0x000000000065E000-memory.dmp

          Filesize

          184KB

        • memory/4912-63-0x0000000000770000-0x00000000007C1000-memory.dmp

          Filesize

          324KB

        • memory/4912-62-0x0000000000630000-0x000000000065E000-memory.dmp

          Filesize

          184KB