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Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06/05/2023, 21:11

General

  • Target

    823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe

  • Size

    800KB

  • MD5

    49fe6c0a3bd14f3c5a6c529550e69f30

  • SHA1

    d6340b63483e758a09799a0932094723193fe619

  • SHA256

    823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40

  • SHA512

    cfb9183d950fceea890a76f68a5a3cdfc9e90039c508237f0d1d0489318a58e33e447a5bf2d26ff229d43f6f1f5c0409e291ea6d8295f4b306e8a7caa2743dad

  • SSDEEP

    24576:BXefWDcV1tFopC/jDwyCc9t895AbDNzPa:BI8+2U7kyZrxP

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .qopz

  • offline_id

    dp2XHHJytO0BDSHTEAkoGB97DSSLD0rheNyRBit1

  • 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-KOKbb3hd7U 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: 0702Sdeb

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.7

Botnet

31c7719b5ee962fbde376b75e771360d

C2

https://steamcommunity.com/profiles/76561199501059503

https://t.me/mastersbots

Attributes
  • profile_id_v2

    31c7719b5ee962fbde376b75e771360d

  • user_agent

    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0

Signatures

  • Detected Djvu ransomware 17 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
  • 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).

  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe
    "C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe
      "C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\22ce5689-2d04-4c35-9b5e-f9786acd6217" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4052
      • C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe
        "C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3820
        • C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe
          "C:\Users\Admin\AppData\Local\Temp\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3016
          • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe
            "C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4788
            • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe
              "C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3672
          • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build3.exe
            "C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4384
            • 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:3576
  • 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:4672
    • 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:4736

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    4245787a3883497201cedccb2894c6e5

    SHA1

    b0e151beb359f2e5545d07d8b6904d42aa2d3210

    SHA256

    5c9455eab43d4bafa996234ab1ea8ee5a392104843c80f0ffee1771a8c5133b2

    SHA512

    a6f053dc4ceb96b6901ea5abf5a14f26d70497195a33fbc7a29ddfb94af7ab330113e6b0b92c9b87bd482502cd06bff37cf76f2409f1c8f5f625d4f493943fab

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

    Filesize

    1KB

    MD5

    ee31c4960c310737fe6e51a579a8424e

    SHA1

    6f478757169e533f1dedddb2a7261322d6792e7d

    SHA256

    f364ed414502e892cda8dc3b72ec7b35e2f0b7ea0bb092287349d32a3a988942

    SHA512

    488bfd25d6b68709c77abb595248ef1a64b163dad2292603035e2f5dd572f9f3bbd75216063ae01fb001dd82a59463499d2aee3eea659583dbf8c047702ca0d7

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

    Filesize

    488B

    MD5

    8ddb9a71191dffbb9a2508e9c8219d20

    SHA1

    8f3cff21d181cb5a8fd66986f587e5de0e9f84a1

    SHA256

    5b869922023ee03dd22d992c70ee9061108abb59202fe4d644680fa96cb503ea

    SHA512

    389b64b1fa58e83bc49687b14811e0e866345691fd18641ac7c00be88035f05112f7bd4ae6c89377d335a4d5b70c3db1f49ec242b726714ac4ceaa91ea3cfcce

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

    Filesize

    482B

    MD5

    559a446d6c3522e67148a142904898c8

    SHA1

    9adb786754ce62152702d2ea130b5bfbddf7e79d

    SHA256

    280cebd7705e2a1d7bee01f1f3091b6bf7fc8b88c038eaf16bd7319b552ccb67

    SHA512

    c1ea12350b5bf26089a3ed6f5c7a717e42ff045575d07cb93bb089991e6a61243c541b353fbda56acf2a908ef880ff60d6a7c7581ce110d0ebb731cb6971e1ca

  • C:\Users\Admin\AppData\Local\22ce5689-2d04-4c35-9b5e-f9786acd6217\823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40.exe

    Filesize

    800KB

    MD5

    49fe6c0a3bd14f3c5a6c529550e69f30

    SHA1

    d6340b63483e758a09799a0932094723193fe619

    SHA256

    823a794bd905835c9668fd14ea30ff3f4dc316b507c0fd81bcadcd0952652d40

    SHA512

    cfb9183d950fceea890a76f68a5a3cdfc9e90039c508237f0d1d0489318a58e33e447a5bf2d26ff229d43f6f1f5c0409e291ea6d8295f4b306e8a7caa2743dad

  • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\a4f1f74c-5c04-40d7-82de-448a09f19229\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/3016-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-158-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-162-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-174-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3016-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3672-180-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-200-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-280-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-279-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-278-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-182-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-183-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-187-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-192-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-178-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-276-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3672-223-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3992-122-0x0000000002410000-0x000000000252B000-memory.dmp

    Filesize

    1.1MB

  • memory/4268-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4268-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4268-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4268-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4268-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4788-181-0x0000000002580000-0x00000000025DD000-memory.dmp

    Filesize

    372KB