Analysis

  • max time kernel
    144s
  • max time network
    135s
  • platform
    windows10-1703_x64
  • resource
    win10-20230915-en
  • resource tags

    arch:x64arch:x86image:win10-20230915-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19/09/2023, 12:28

General

  • Target

    51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe

  • Size

    755KB

  • MD5

    d84acac894f87dfbb01b668bbf6485a7

  • SHA1

    5584d1909852bcfdcbd1215c9743431eb92bc18b

  • SHA256

    51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813

  • SHA512

    bf5a69814b41e62e2b4be436cc9fc67aab8d2ce3cb8213ef983773f057bffd144333d66bdd9cf0d0ffd729021680af3456b6758150d7b7f86fb45b6b63c1f5b0

  • SSDEEP

    12288:dyOZop2mOTSNMlFJDfBSAO5cgFF/u+/0e+exonwfqMBERGUS3Z:dXRhbJ73C0Kx+6o8qbVAZ

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wwpl

  • 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: 0786JOsie

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\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe
    "C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe
      "C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1124
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1b883be0-7a22-4795-8c05-79b12fca2953" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:616
      • C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe
        "C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3004
        • C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe
          "C:\Users\Admin\AppData\Local\Temp\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:372
          • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe
            "C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4324
            • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe
              "C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4928
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2484
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:764
          • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build3.exe
            "C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:512
            • 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:4816
  • 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:436
    • 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:3772

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

    9b667ecf8c64e80b6ba550371dc3149c

    SHA1

    dd7dd3675307f72562b20d01e86baf619798accf

    SHA256

    01376f194051bd65ab162ec35c24d005c179d01d28657eb1f339bb2ededfb886

    SHA512

    60daf11cfac79900c5e7c988606570a45a9b170b500acc203c0a12c0683914b745442a177017acc3a4a7df3fd99847768a264e2f0fd4aec76c92b5ecd870fc0c

  • 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

    2279358a035faab158eede269670578b

    SHA1

    82058c24bfe52895c417e9fa668fae206b8e9ee4

    SHA256

    2013967379deec55c2afb6ba5df4c07a20feb98bf1f37f3d20774604cd028591

    SHA512

    d554ca87126af9cbec000fb498c12103410c61187da98d30b4d165d52f1d13018b94b0635c2c9ceb048bd2729ee4e0601776aea184a3415b1b2bf86b8fc7abef

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

    Filesize

    482B

    MD5

    cbccaf370369408eefcb31350f38e238

    SHA1

    3e2d20785c0b9d66f953e262c6e0de4a435e9e8f

    SHA256

    c6cd761624912e47b670f589c921d11217e580679e655387f209ce9066a79d9e

    SHA512

    477a56b1d99c18401c510d656b80db3b065fc6f153390d8f94d4225450b3e8dfec1242f180bccd547d6ed7b938df413d6e7a37a2ebc85be769028d188bba99dd

  • C:\Users\Admin\AppData\Local\1b883be0-7a22-4795-8c05-79b12fca2953\51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813.exe

    Filesize

    755KB

    MD5

    d84acac894f87dfbb01b668bbf6485a7

    SHA1

    5584d1909852bcfdcbd1215c9743431eb92bc18b

    SHA256

    51f7fc208aaa670db6be2852e5aea528ef18efcf204a3ae9b6de5013dbfa4813

    SHA512

    bf5a69814b41e62e2b4be436cc9fc67aab8d2ce3cb8213ef983773f057bffd144333d66bdd9cf0d0ffd729021680af3456b6758150d7b7f86fb45b6b63c1f5b0

  • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe

    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe

    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build2.exe

    Filesize

    316KB

    MD5

    b298c49f1808cc5d93dcc3dfc088b10f

    SHA1

    c0b8e909d0ef573e0f5a4e25870a63f3f6ee1306

    SHA256

    ffaed8dcf0282df833b74faf419729dc20951ee7edbb58103fa5c582e93d5f3a

    SHA512

    1b75aeaa793b5aa92769f68bb0f677206394f5b28e7ac1a23f6be923af812a5a9033920af0c2de1e6805e46a5c9ec283ddecd879b1264d75d7b4190266028895

  • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\3d0185df-596e-4b37-9a73-cfe20f56ebd7\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

  • 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/372-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/372-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1124-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1124-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1124-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1124-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1124-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3004-20-0x0000000002240000-0x00000000022DA000-memory.dmp

    Filesize

    616KB

  • memory/4324-58-0x00000000005D0000-0x00000000005FE000-memory.dmp

    Filesize

    184KB

  • memory/4324-59-0x0000000000720000-0x0000000000771000-memory.dmp

    Filesize

    324KB

  • memory/4572-1-0x00000000024D0000-0x000000000256C000-memory.dmp

    Filesize

    624KB

  • memory/4572-2-0x00000000025D0000-0x00000000026EB000-memory.dmp

    Filesize

    1.1MB

  • memory/4928-62-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-63-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-64-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-75-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4928-60-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-112-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-113-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4928-116-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB