Analysis

  • max time kernel
    296s
  • max time network
    249s
  • platform
    windows10-1703_x64
  • resource
    win10-20240214-en
  • resource tags

    arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19/02/2024, 00:03

General

  • Target

    b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe

  • Size

    738KB

  • MD5

    92cdb34ddc3c41a7f5bd3bdf2a56fa47

  • SHA1

    3ac15a53f51b3e98bbff1386a75e854dc91fa36a

  • SHA256

    b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a

  • SHA512

    bc25a779d19ad0dc40e00f9f0cdf4772c13517297a0fc7db56cbd97e2d992cc0298668de00ad07eee177be0278a9554b20e7575626d3e68b1fb3d79e94693646

  • SSDEEP

    12288:76rIfM84caJqBUk+ojvr/LukOi2QRbIeW3eXMrGbWfv3qMUnCCcI7vZFIQnJclyz:76A4OUk+ojvrLuvCRbIzO3bWH3qMqjmk

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .lkhy

  • offline_id

    OxV6DGl22io8sqMOW1zCCOlzPiv4f1Vqzw7Y8zt1

  • payload_url

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

    http://habrafa.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://we.tl/t-uNdL2KHHdy 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: 0851ASdw

rsa_pubkey.plain

Extracted

Family

vidar

Version

7.8

Botnet

13bd7290c1961db27b4ede41bfbf4c5e

C2

https://t.me/karl3on

https://steamcommunity.com/profiles/76561199637071579

Attributes
  • profile_id_v2

    13bd7290c1961db27b4ede41bfbf4c5e

  • user_agent

    Mozilla/5.0 (X11; Linux 3.5.4-1-ARCH i686; es) KHTML/4.9.1 (like Gecko) Konqueror/4.9

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Detected Djvu ransomware 16 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\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe
    "C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe
      "C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4784
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e23ed877-290c-4665-b202-42d3cd10a1c3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:392
      • C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe
        "C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4332
        • C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe
          "C:\Users\Admin\AppData\Local\Temp\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2448
          • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build2.exe
            "C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:196
            • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build2.exe
              "C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build2.exe"
              6⤵
              • Executes dropped EXE
              PID:4720
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 1916
                7⤵
                • Program crash
                PID:4956
          • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build3.exe
            "C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:312
            • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build3.exe
              "C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:4836
              • 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:4652
  • 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:1028
    • 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:1000
      • 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:4860
  • 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:4368
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:404
  • 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:4516
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4452
  • 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:1484
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2596

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

          9da3b5b4a894c15d1aa6d3d5da27ee05

          SHA1

          0d16e87371ab9401b56eb65a272347758566941b

          SHA256

          5d3ca1af142868ad96cffad80f8828660ef8fc2de231848cf76bd714ca68e37a

          SHA512

          8caa5f7d48de98fe9858cea339f6e08f8ef099a268f5fe644f91e2cf815be613bc59f1b48bff1e7413ecd57d3dc3db57c8cdd1a9987f4b5fd720fd96320a0d37

        • 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

          d1584a99c3290b0a74da9182995e907b

          SHA1

          8d2168359133a670362b8cbd7eb077bc19f2b078

          SHA256

          5599e607f68100883c5073e8e48ddaa231aba70689d99ad899652003359aafd7

          SHA512

          7de649cd90ffa7603b4b395bdb88e0a90c576a12729db40df1b2405564fecd4ab8c755c3d34db1feec6fbb6661263ce0c8792367085f7a1a49935f28e51f13a0

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

          Filesize

          392B

          MD5

          7a6bb9ee95419be06e66fd611bd50189

          SHA1

          a7b9856c17a59c0881be68da3b0db11924353eb1

          SHA256

          511de9af63c0473ae2fd2b859455fff6b60e15fef63cd181679a6c2856263d5a

          SHA512

          63301836e702088e38d6dbc72be87b3d91508d9e41a665bb2f3ad371a23af01f5ad3c5a8891c64b36fda6b3bd8b9675f1331d465095d878f804c9323b3228ef8

        • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build2.exe

          Filesize

          255KB

          MD5

          c57c76d6dc6ed6b6e534d8180294fc2d

          SHA1

          6c164812674571f84eeba36d07e47241ca22c40e

          SHA256

          4e8d80a17217b51fde5079a5c195b4dc24890797cf6346c366a59c9c35847a2b

          SHA512

          6f92fe7f51aeecc12c216b4b801cc6320e70f89ac1bf5f9905df6bf2f753b7045da78d238cceddb0d93bac0feabaf8f4ffbb65acded8ba679515444f166a56a3

        • C:\Users\Admin\AppData\Local\73051477-4802-4469-8b00-0f193334cf9e\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • C:\Users\Admin\AppData\Local\e23ed877-290c-4665-b202-42d3cd10a1c3\b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a.exe

          Filesize

          738KB

          MD5

          92cdb34ddc3c41a7f5bd3bdf2a56fa47

          SHA1

          3ac15a53f51b3e98bbff1386a75e854dc91fa36a

          SHA256

          b67d8f62acc508f376177aade85c68ed2263e97c83495aff6e705874b5b01a0a

          SHA512

          bc25a779d19ad0dc40e00f9f0cdf4772c13517297a0fc7db56cbd97e2d992cc0298668de00ad07eee177be0278a9554b20e7575626d3e68b1fb3d79e94693646

        • memory/196-39-0x00000000006F0000-0x00000000007F0000-memory.dmp

          Filesize

          1024KB

        • memory/196-40-0x00000000021D0000-0x0000000002201000-memory.dmp

          Filesize

          196KB

        • memory/312-72-0x00000000022D0000-0x00000000022D4000-memory.dmp

          Filesize

          16KB

        • memory/312-71-0x00000000007F0000-0x00000000008F0000-memory.dmp

          Filesize

          1024KB

        • memory/1028-98-0x0000000000910000-0x0000000000A10000-memory.dmp

          Filesize

          1024KB

        • memory/1460-1-0x0000000002590000-0x000000000262A000-memory.dmp

          Filesize

          616KB

        • memory/1460-3-0x0000000002710000-0x000000000282B000-memory.dmp

          Filesize

          1.1MB

        • memory/1484-178-0x0000000000A10000-0x0000000000B10000-memory.dmp

          Filesize

          1024KB

        • memory/2448-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-62-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-59-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-53-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-52-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2448-50-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4332-21-0x0000000002580000-0x0000000002619000-memory.dmp

          Filesize

          612KB

        • memory/4368-122-0x0000000000800000-0x0000000000900000-memory.dmp

          Filesize

          1024KB

        • memory/4516-152-0x0000000000880000-0x0000000000980000-memory.dmp

          Filesize

          1024KB

        • memory/4720-45-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/4720-44-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/4720-41-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/4720-64-0x0000000000400000-0x0000000000644000-memory.dmp

          Filesize

          2.3MB

        • memory/4784-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4784-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4784-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4784-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4784-2-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4836-73-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4836-75-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4836-76-0x0000000000410000-0x00000000004D5000-memory.dmp

          Filesize

          788KB

        • memory/4836-68-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB