Analysis

  • max time kernel
    193s
  • max time network
    204s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 16:01

General

  • Target

    0284ef0c5e906d8c6f03393d9cd82e63.exe

  • Size

    713KB

  • MD5

    0284ef0c5e906d8c6f03393d9cd82e63

  • SHA1

    df461c8ad24f1b90f6c711a9a3a58c4228b4a9d8

  • SHA256

    ec9d5791f02cc5b005e9bb3619092d1645c8c29b50a34ed23381c3514cf512bf

  • SHA512

    fa2550870fc9155c1b39078c4faeb94dc24758fcc9640f45c5ed864269ff8aa3b3b081e3f055766ca7378372c456d81bfa2a922618e0bee4f5657a5b7fe4e6ce

  • SSDEEP

    12288:QqxawfhDmjpg7CeeRa2METczyqsxREcPqSjPrO1iosNURIlWOZBnS:Q1ydtCeeA2ZDqMBP9oR+l7ZBn

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tuis

  • offline_id

    Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1

  • 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-o7UXxOstmw 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: 0582Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

55.1

Botnet

517

C2

https://t.me/tg_privatetalk

https://nerdculture.de/@yixehi33

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 9 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 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 3 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe
    "C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe
      "C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4436
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0e023b19-66a8-42a2-a04f-3137ec23cc7d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1608
      • C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe
        "C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3700
        • C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe
          "C:\Users\Admin\AppData\Local\Temp\0284ef0c5e906d8c6f03393d9cd82e63.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3020
          • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe
            "C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:484
            • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe
              "C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:744
          • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build3.exe
            "C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3784
            • 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:3736
    • 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:4828

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:\ProgramData\sqlite3.dll

    Filesize

    1.1MB

    MD5

    1f44d4d3087c2b202cf9c90ee9d04b0f

    SHA1

    106a3ebc9e39ab6ddb3ff987efb6527c956f192d

    SHA256

    4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260

    SHA512

    b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45

  • C:\Users\Admin\AppData\Local\0e023b19-66a8-42a2-a04f-3137ec23cc7d\0284ef0c5e906d8c6f03393d9cd82e63.exe

    Filesize

    713KB

    MD5

    0284ef0c5e906d8c6f03393d9cd82e63

    SHA1

    df461c8ad24f1b90f6c711a9a3a58c4228b4a9d8

    SHA256

    ec9d5791f02cc5b005e9bb3619092d1645c8c29b50a34ed23381c3514cf512bf

    SHA512

    fa2550870fc9155c1b39078c4faeb94dc24758fcc9640f45c5ed864269ff8aa3b3b081e3f055766ca7378372c456d81bfa2a922618e0bee4f5657a5b7fe4e6ce

  • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe

    Filesize

    325KB

    MD5

    e4e90e1dda4b51d199d449fa936db902

    SHA1

    70de6b213f872ba782ba11cad5a5d1294ca9e741

    SHA256

    8ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419

    SHA512

    3958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed

  • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe

    Filesize

    325KB

    MD5

    e4e90e1dda4b51d199d449fa936db902

    SHA1

    70de6b213f872ba782ba11cad5a5d1294ca9e741

    SHA256

    8ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419

    SHA512

    3958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed

  • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build2.exe

    Filesize

    325KB

    MD5

    e4e90e1dda4b51d199d449fa936db902

    SHA1

    70de6b213f872ba782ba11cad5a5d1294ca9e741

    SHA256

    8ecc0426ea37a5c9e59d00b4fde1508175a950372ec3870965f1e527634b3419

    SHA512

    3958e1c40d69d5439b5e85bdb5765bb38ec5bba24f38a8aafb9a53c167ebaffb5c202441613af3f2d968c9c902de35036f67d87f7777efeb4c66869a7fc3c4ed

  • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\bab72b1b-69a3-4e85-9f09-a4448501a707\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/484-156-0x00000000008B5000-0x00000000008DD000-memory.dmp

    Filesize

    160KB

  • memory/484-158-0x0000000002240000-0x0000000002284000-memory.dmp

    Filesize

    272KB

  • memory/744-160-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/744-159-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/744-157-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/744-168-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/744-154-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/3020-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3020-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3700-146-0x00000000020BF000-0x0000000002151000-memory.dmp

    Filesize

    584KB

  • memory/4436-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4436-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4436-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4436-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4436-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4932-135-0x0000000002227000-0x00000000022B9000-memory.dmp

    Filesize

    584KB

  • memory/4932-136-0x00000000023B0000-0x00000000024CB000-memory.dmp

    Filesize

    1.1MB