Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/05/2023, 07:58

General

  • Target

    3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe

  • Size

    818KB

  • MD5

    9055163ad21ddf48efb034113a657ec0

  • SHA1

    9b41f2a49e2aba0600a1084681e98dd343e3f1a0

  • SHA256

    3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b

  • SHA512

    20810e7239a94791c5cf60e72cab1d278e7a411552ee83a97d14a428d7fa6fd1cb49b996a8ae4d8b6ce4a8551466f720941ff6c2f963547e78da686842f16fba

  • SSDEEP

    12288:ML5iz8y15Tw2YG21XYttXY31kWDJZHKnVjVdGNOZfb40Lx0/EW8gZgOZ:Mm9MLG2itGFHPQrCkpbbgZg

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .sato

  • offline_id

    GdcTFG029NGZ36LGVnRuxctpZuCpnW1SW5kiOCt1

  • 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-iN0WoEcmv0 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: 0698Ikksje

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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe
    "C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe
      "C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4880
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c19910d1-8bd0-4f47-9d82-67240f054a30" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1892
      • C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe
        "C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:548
        • C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe
          "C:\Users\Admin\AppData\Local\Temp\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4684
          • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe
            "C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3672
            • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe
              "C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4608

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

    4245787a3883497201cedccb2894c6e5

    SHA1

    b0e151beb359f2e5545d07d8b6904d42aa2d3210

    SHA256

    5c9455eab43d4bafa996234ab1ea8ee5a392104843c80f0ffee1771a8c5133b2

    SHA512

    a6f053dc4ceb96b6901ea5abf5a14f26d70497195a33fbc7a29ddfb94af7ab330113e6b0b92c9b87bd482502cd06bff37cf76f2409f1c8f5f625d4f493943fab

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

    Filesize

    1KB

    MD5

    5145226ee965ec6c7814292caa016376

    SHA1

    599b6fa914c11bf8527397d65084c2de42aff73a

    SHA256

    5ee4ed22271e4b9da8d765374cd65b5015abc548748c746dbdddf6fdf680db5e

    SHA512

    f23363359d73e416b0c335e7f91128874242c6c98926d1e4d084173e2b94ba58844dec98d781a2d4f3c82420b3522f77bdceb613109a9c798330769080cdfc2d

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

    Filesize

    488B

    MD5

    df91cefd83d0df045d812ca002e3d3ea

    SHA1

    78053cd4b96b0691dc9b5c1b85de7d029de85101

    SHA256

    7c77d124dfcc977011d8a96a4f99e8429e9c3096673deb762a7886ae1ec034b9

    SHA512

    4dfd9fd59ed4feb9cb6e6f94975e7904ae745234abb1564392efa6b906ad5453b24ce1eed8946139ac511add25cf5ada443875ca12211f48ef2123131b8c62d7

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

    Filesize

    482B

    MD5

    34a8493a8d7bad5f9fd493752e45e42c

    SHA1

    7bdc77c6e636477e385f6a5f6e4a00b32e2a9a20

    SHA256

    4ddbc3b978aa6d8e6ad05b2d242bf0a16c5715a72389f5170998dbfff7b412c4

    SHA512

    379730534d1a0a29f29b72cb691a158a57c0b60bbf698b9ed7d620414474362ef30ae98963c9b1015f07090beb857d48fd5309250bbd5b6165d5c4fdc2f58d2a

  • C:\Users\Admin\AppData\Local\c19910d1-8bd0-4f47-9d82-67240f054a30\3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b.exe

    Filesize

    818KB

    MD5

    9055163ad21ddf48efb034113a657ec0

    SHA1

    9b41f2a49e2aba0600a1084681e98dd343e3f1a0

    SHA256

    3c98ddc2c844c0f5fdd24797037a3b20cb7d61883145a10b6659dcc0dedf615b

    SHA512

    20810e7239a94791c5cf60e72cab1d278e7a411552ee83a97d14a428d7fa6fd1cb49b996a8ae4d8b6ce4a8551466f720941ff6c2f963547e78da686842f16fba

  • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\cdc93e6d-4715-403c-8ef1-f9b904a26915\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • memory/2548-136-0x0000000002730000-0x000000000284B000-memory.dmp

    Filesize

    1.1MB

  • memory/3672-174-0x00000000025A0000-0x00000000025FD000-memory.dmp

    Filesize

    372KB

  • memory/4608-256-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-186-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4608-257-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-173-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-254-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-175-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-176-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4608-171-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4684-271-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-260-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-158-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-274-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-273-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-272-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-269-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4880-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4880-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4880-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4880-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4880-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB