Resubmissions

18/03/2024, 04:52

240318-fhrr7agf52 10

Analysis

  • max time kernel
    298s
  • max time network
    301s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    18/03/2024, 04:52

General

  • Target

    4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe

  • Size

    738KB

  • MD5

    ac082d5f48200f4358291a225ee23e5b

  • SHA1

    e808bd1bf51b927b7a3ce5bc829ee97c5eef331a

  • SHA256

    4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce

  • SHA512

    4096df8372d7b964edf03de352053275216ebbb1f580222d7d912b8b6a629a5cda9518956c856fd5db9148cf04a9754ad0908a64835accf6475cb774eb77a00d

  • SSDEEP

    12288:X8RTBaYnrGFixBFuNVvOimuPXsK7ydZKgf3KjRUEKgsZqTAMkl:XGBbnyABFuNVvOhIXskcZ3KjOZ5

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test2/get.php

Attributes
  • extension

    .looy

  • offline_id

    1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1

  • payload_url

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

    http://sajdfue.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/3ed7a617738550b0a00c5aa231c0752020240316170955/d71ce1 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0858PsawqS

rsa_pubkey.plain

Extracted

Family

vidar

Version

8.3

Botnet

82df9629d6ef6fc7fe54d6eb2bc6137b

C2

https://steamcommunity.com/profiles/76561199651834633

https://t.me/raf6ik

Attributes
  • profile_id_v2

    82df9629d6ef6fc7fe54d6eb2bc6137b

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; rv:109.0) Gecko/20100101 Firefox/115.0

Signatures

  • Detect Vidar Stealer 5 IoCs
  • 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 12 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe
    "C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe
      "C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:696
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6af56da2-5662-4886-b82a-a37ef6eacc4f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:192
      • C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe
        "C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1436
        • C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe
          "C:\Users\Admin\AppData\Local\Temp\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4636
          • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build2.exe
            "C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1772
            • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build2.exe
              "C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:3840
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 1664
                7⤵
                • Program crash
                PID:1756
          • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build3.exe
            "C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4496
            • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build3.exe
              "C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:832
              • 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"
                7⤵
                • Creates scheduled task(s)
                PID:2644
  • 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 SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:868
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4696
      • 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"
        3⤵
        • Creates scheduled task(s)
        PID:4228
  • 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 SetThreadContext
    PID:204
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4720
  • 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 SetThreadContext
    PID:4548
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4052
  • 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 SetThreadContext
    PID:4748
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    0fb83292a6190a38b8b44f50fd97f709

    SHA1

    1b8c217779da5dfa37e72b79e6b5bfbba505896a

    SHA256

    5e8bda4df54e2c095a153bad4c526516a92ff45b7513b92f8827414e49458fa3

    SHA512

    68e4e0aeec5d5dfc6fe7d7b1913614df0af02c6e410d5a020fa8e059f8e2a78eaddee06603f847b132806d5da8214da85917e775b1fe3ad602a4bde84dcd4e7a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    af2bf57a96c3b45e33a7080f6e913f57

    SHA1

    419f8b3f1a4f4d79dd409622c78a11673be4af6b

    SHA256

    5178f30c4b4d29d584d1124cfb54e8cac9270fca438b8d0353548cbf852e4788

    SHA512

    a830c8e07f3e9adee386e1942d057ff71bc81a19e065a365453901f350e08ea6320be52a106d6db08c7f25d0176bc987e6cdeb7396ebf47bc635dac394b5077c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    89c837f3639a5a45869d92f450aec23c

    SHA1

    25c86c7912404fac0140d69599bfbde47b830199

    SHA256

    6bdd3e53a14cfd507540997ddb7fed36ce7792c5ef29575dce03a5a1e5227a30

    SHA512

    62156fca161d83b5497b9cac98754f978705cec7542d626c46d667b82bace56c17a78a058cc5abedb15c31500f562f5248be55d17694f86aad4262b520844c63

  • C:\Users\Admin\AppData\Local\6af56da2-5662-4886-b82a-a37ef6eacc4f\4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce.exe

    Filesize

    738KB

    MD5

    ac082d5f48200f4358291a225ee23e5b

    SHA1

    e808bd1bf51b927b7a3ce5bc829ee97c5eef331a

    SHA256

    4adf61aa0b44273e8e9a770859225514ce7433fef615469f88180d417867abce

    SHA512

    4096df8372d7b964edf03de352053275216ebbb1f580222d7d912b8b6a629a5cda9518956c856fd5db9148cf04a9754ad0908a64835accf6475cb774eb77a00d

  • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build2.exe

    Filesize

    295KB

    MD5

    47704f454af8641dac1af2e2768d7881

    SHA1

    e3341bfdec84f69684aecde18cab2864519c7728

    SHA256

    a6a9375dd6e3b285bc6d65536a151a47dd136aced8180492f5ed6a391edf0d64

    SHA512

    9aea598ee30342a88fedf5eca2b104e8c5587cd284bd43229581b04497c60e6a71e5392a171a5dfbe88a2e41269434922e21c3f7f9682e2ea10b27b104606b25

  • C:\Users\Admin\AppData\Local\a2aeaf3d-a514-44ef-8cce-a718d0af612a\build3.exe

    Filesize

    299KB

    MD5

    41b883a061c95e9b9cb17d4ca50de770

    SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

    SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

    SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • memory/204-132-0x0000000000910000-0x0000000000A10000-memory.dmp

    Filesize

    1024KB

  • memory/204-139-0x0000000000910000-0x0000000000A10000-memory.dmp

    Filesize

    1024KB

  • memory/696-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/696-1-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/696-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/696-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/696-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/832-82-0x0000000000410000-0x00000000004D5000-memory.dmp

    Filesize

    788KB

  • memory/832-81-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/832-79-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/832-75-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/868-102-0x0000000000A60000-0x0000000000B60000-memory.dmp

    Filesize

    1024KB

  • memory/1436-21-0x0000000002120000-0x00000000021BB000-memory.dmp

    Filesize

    620KB

  • memory/1772-50-0x0000000000810000-0x0000000000910000-memory.dmp

    Filesize

    1024KB

  • memory/1772-71-0x0000000002330000-0x0000000002361000-memory.dmp

    Filesize

    196KB

  • memory/1772-51-0x0000000002330000-0x0000000002361000-memory.dmp

    Filesize

    196KB

  • memory/2252-4-0x0000000002320000-0x000000000243B000-memory.dmp

    Filesize

    1.1MB

  • memory/2252-67-0x0000000002320000-0x000000000243B000-memory.dmp

    Filesize

    1.1MB

  • memory/2252-2-0x00000000021A0000-0x0000000002238000-memory.dmp

    Filesize

    608KB

  • memory/3840-47-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/3840-52-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/3840-53-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/3840-69-0x0000000000400000-0x0000000000644000-memory.dmp

    Filesize

    2.3MB

  • memory/4496-74-0x0000000000B50000-0x0000000000C50000-memory.dmp

    Filesize

    1024KB

  • memory/4496-76-0x0000000000920000-0x0000000000924000-memory.dmp

    Filesize

    16KB

  • memory/4548-154-0x0000000000A10000-0x0000000000B10000-memory.dmp

    Filesize

    1024KB

  • memory/4636-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4636-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4720-130-0x0000000000410000-0x0000000000411000-memory.dmp

    Filesize

    4KB

  • memory/4748-185-0x0000000000920000-0x0000000000A20000-memory.dmp

    Filesize

    1024KB

  • memory/4748-194-0x0000000000920000-0x0000000000A20000-memory.dmp

    Filesize

    1024KB