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28/03/2024, 12:15

240328-pe2mnacb6s 10

Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 12:15

General

  • Target

    805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe

  • Size

    758KB

  • MD5

    294793aadd7bb176a3032956a2e23c94

  • SHA1

    950cb1b6b303b8c69d2679aaffd941cc1de2cfcf

  • SHA256

    805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba

  • SHA512

    e5610cde11a2f3e10db7d7343c9b670dcd015a17ac38c5c2a6091e96706dfab180279d28c1e0bc9ff278e6d6d7865bb334d1b25328228b5b5e42625add7d3a74

  • SSDEEP

    12288:ldxuocz6Gvk+uNoJh7Jj7QN5yuB2MVLVh7DyczgHzyDYcs712Ry5E8F+yTSGU7o:lTdFWPuNMxQ2m2aDXUHMs7Oy1IaRSo

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

8.6

Botnet

5739ef2bbcd39fcd59c5746bfe4238c5

C2

https://steamcommunity.com/profiles/76561199658817715

https://t.me/sa9ok

Attributes
  • profile_id_v2

    5739ef2bbcd39fcd59c5746bfe4238c5

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 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 6 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\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe
    "C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe
      "C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4864
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c0b74395-d214-4f2e-8076-04235d5d079f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1772
      • C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe
        "C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3608
        • C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe
          "C:\Users\Admin\AppData\Local\Temp\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2808
          • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build2.exe
            "C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2396
            • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build2.exe
              "C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:2756
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2756 -s 2128
                7⤵
                • Program crash
                PID:4712
          • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build3.exe
            "C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1276
            • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build3.exe
              "C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build3.exe"
              6⤵
              • Executes dropped EXE
              PID:4456
              • 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:4352
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2756 -ip 2756
    1⤵
      PID:468
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      1⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2188
        • 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:764
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      1⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1080
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        2⤵
          PID:1552

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        1KB

        MD5

        f213915edaae28d50459918c3bb1de6d

        SHA1

        55c71f771f67ca04df6876eebc30453b328352fc

        SHA256

        e226380b93bacad0e4cb95ecb5369941396f49c3bd6c869367a2b840def41ee9

        SHA512

        1dd92cafe3c45c7739aaa3ede9868597f6a689bc221d18f69d7676f8f2323ced160a22e1df661413465544afe9620f34606078dcc6baf83125d912c768bd1303

      • 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

        f5afac9e68044492812e69d8dcae4f42

        SHA1

        a221b30a753186e745f4fabd1f8beabbc8036b9b

        SHA256

        77abc5f8692fddac70d90fea444c46f4bb8b74529e539ca72ad708a95bb036e4

        SHA512

        30f1c3db37e8ec12886abff466415310e8cbdf7caade13a527c885059ed53020c774b672d48d73092e410d62ca33195b3056830587b507a94a9bd45c5711dbed

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

        Filesize

        392B

        MD5

        9e3fe870999c3ad1fcc71e59ef5be56c

        SHA1

        e5e876cebca5d5efa75cf5d0e87e309a27cb5416

        SHA256

        6570a829aa46562c1079210efcbb88f99084c00907f56e7a60ec92eac412c8a5

        SHA512

        0051af0af75bcddb9bb46735f01890decc0a9122720f3313ebc725e40abb0792217fe81b6523e208e81c5f84c80d9a81bb6ac5ab8ec1f1a24691e0fe87c9cd3c

      • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build2.exe

        Filesize

        277KB

        MD5

        8dae8b6a6be6e3527183594d1c26a2d3

        SHA1

        b87e40cee60869a36e79c88c8a3a34baf0bc4889

        SHA256

        afce72cd3bc717c784962083066e3ede2b0aaadbe0908ec7360096c923774fa5

        SHA512

        0bf065700db647efba39a13a58242a595907e6c11885575cf0bdad9e23ab40583c8a6535464e46d75d075e20d88b7a6305a761df9da787fdc8728483dd48f96e

      • C:\Users\Admin\AppData\Local\85b640bf-77af-40a5-8f5d-aebc8fb51728\build3.exe

        Filesize

        299KB

        MD5

        41b883a061c95e9b9cb17d4ca50de770

        SHA1

        1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

        SHA256

        fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

        SHA512

        cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

      • C:\Users\Admin\AppData\Local\c0b74395-d214-4f2e-8076-04235d5d079f\805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba.exe

        Filesize

        758KB

        MD5

        294793aadd7bb176a3032956a2e23c94

        SHA1

        950cb1b6b303b8c69d2679aaffd941cc1de2cfcf

        SHA256

        805c10c71d79ddd965960e81d7c45d7ebd280b62ec1f79e654b72111e21e53ba

        SHA512

        e5610cde11a2f3e10db7d7343c9b670dcd015a17ac38c5c2a6091e96706dfab180279d28c1e0bc9ff278e6d6d7865bb334d1b25328228b5b5e42625add7d3a74

      • memory/1080-106-0x0000000000860000-0x0000000000960000-memory.dmp

        Filesize

        1024KB

      • memory/1276-80-0x0000000000A50000-0x0000000000A54000-memory.dmp

        Filesize

        16KB

      • memory/1276-78-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

        Filesize

        1024KB

      • memory/1552-110-0x0000000000400000-0x0000000000406000-memory.dmp

        Filesize

        24KB

      • memory/2188-92-0x0000000000400000-0x0000000000406000-memory.dmp

        Filesize

        24KB

      • memory/2332-1-0x0000000002940000-0x00000000029DC000-memory.dmp

        Filesize

        624KB

      • memory/2332-2-0x00000000029E0000-0x0000000002AFB000-memory.dmp

        Filesize

        1.1MB

      • memory/2396-48-0x0000000002160000-0x0000000002191000-memory.dmp

        Filesize

        196KB

      • memory/2396-47-0x00000000005B0000-0x00000000006B0000-memory.dmp

        Filesize

        1024KB

      • memory/2756-74-0x0000000000400000-0x0000000000644000-memory.dmp

        Filesize

        2.3MB

      • memory/2756-53-0x0000000000400000-0x0000000000644000-memory.dmp

        Filesize

        2.3MB

      • memory/2756-52-0x0000000000400000-0x0000000000644000-memory.dmp

        Filesize

        2.3MB

      • memory/2756-49-0x0000000000400000-0x0000000000644000-memory.dmp

        Filesize

        2.3MB

      • memory/2808-21-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-85-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-34-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-32-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-28-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-27-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-22-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-20-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-69-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/2808-35-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/3608-18-0x00000000026A0000-0x0000000002734000-memory.dmp

        Filesize

        592KB

      • memory/4056-91-0x0000000000990000-0x0000000000A90000-memory.dmp

        Filesize

        1024KB

      • memory/4056-97-0x0000000000990000-0x0000000000A90000-memory.dmp

        Filesize

        1024KB

      • memory/4456-77-0x0000000000400000-0x0000000000406000-memory.dmp

        Filesize

        24KB

      • memory/4456-81-0x0000000000400000-0x0000000000406000-memory.dmp

        Filesize

        24KB

      • memory/4456-82-0x0000000000410000-0x00000000004D9000-memory.dmp

        Filesize

        804KB

      • memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4864-15-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB

      • memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp

        Filesize

        1.2MB