Analysis

  • max time kernel
    298s
  • max time network
    201s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    02-02-2024 04:53

General

  • Target

    7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe

  • Size

    729KB

  • MD5

    3f51b9adc83302f0a3a63a9ce89b5a25

  • SHA1

    934d5c5b4e3c86c9ae3e7df7150cbdee9d24c113

  • SHA256

    7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4

  • SHA512

    d7f5d7a15bb6df80234c818e8e92c310643f3493030ac6cf02f7c8865e97125ed530c0a9819b22aec0311b34d329239f33cd4563238d198e6a43b1ca5a90efc4

  • SSDEEP

    12288:Yd+RYmXPSXL6YOcrS0sKN+mR7Z1JFVFaM1Nolw6OWqY:YcXX6LOcrSwNXR7TOMXcOWH

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdcc

  • offline_id

    LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1

  • 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. You can get and look video overview decrypt tool: https://we.tl/t-iVcrVFVRqu Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0846ASdw

rsa_pubkey.plain

Extracted

Family

vidar

Version

7.6

Botnet

1b9d7ec5a25ab9d78c31777a0016a097

C2

https://t.me/tvrugrats

https://steamcommunity.com/profiles/76561199627279110

Attributes
  • profile_id_v2

    1b9d7ec5a25ab9d78c31777a0016a097

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 14 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 14 IoCs
  • Loads dropped DLL 11 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 9 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.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe
    "C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2880
    • C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe
      "C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f2faa2c3-18f3-4644-839e-16b628dedba8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2600
      • C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe
        "C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2744
        • C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe
          "C:\Users\Admin\AppData\Local\Temp\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2676
          • C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build2.exe
            "C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2624
            • C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build2.exe
              "C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:2112
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2112 -s 1464
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:2316
          • C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build3.exe
            "C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2492
            • C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build3.exe
              "C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2356
              • 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:596
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {469EC92F-2968-495F-BB2A-144469B420E8} S-1-5-21-3427588347-1492276948-3422228430-1000:QVMRJQQO\Admin:Interactive:[1]
    1⤵
      PID:2892
      • 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 SetThreadContext
        PID:2796
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2784
          • 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"
            4⤵
            • Creates scheduled task(s)
            PID:2336
      • 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 SetThreadContext
        PID:1552
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1936
      • 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 SetThreadContext
        PID:2064
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:820
      • 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 SetThreadContext
        PID:2128
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1268
      • 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 SetThreadContext
        PID:1172
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2032

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    File and Directory Permissions Modification

    1
    T1222

    Modify Registry

    2
    T1112

    Subvert Trust Controls

    1
    T1553

    Install Root Certificate

    1
    T1553.004

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      1KB

      MD5

      7b0c931c9e5f4ae3b486907b8e65fe09

      SHA1

      abb761d0fe5318119a8a21204b56840a83c12584

      SHA256

      d21cfbea4d9bae6d62238f6c73b0c9d2b85ca549cd6c404d013e9f859d1e4fd8

      SHA512

      2f9a996f02606e5a0c8a288045644b43b45401f1bfd7dcc8593fde95573d77ac83b466af1d3b019f6ae444304f7c564a4685f751a68cb04d8f014d7001409c32

    • 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

      7dcd716ed7aaa14cfdef732b363cc08c

      SHA1

      c782c36dfa7659e0876e8284e6f5bfca933f5682

      SHA256

      4370410bf2ec37c41a20bf73bd941e034f98d6dc8339bea1cd314982e5992c51

      SHA512

      d8546c6c66e0ba239f6913b1806586add05245c4bc9fdff7d2ced6a9196938957bf0710881b70fb29b416b6e3c941ed2ad45fb3b8f533b9c59329ccc5ddd2171

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
      Filesize

      344B

      MD5

      fe2a9d0dbd9f98e239de91f590f0b13f

      SHA1

      3b9359cc4eab00ebde85299ae4b6f9165e427531

      SHA256

      3553b56cedb37d6872522fe9d559ba7ac8db4d61971cd096df5556fc1680b393

      SHA512

      8a760aa956b124941f4788fce60c1124bbfb03af4b895c41b257034b77a9ee365fc8476fba322d42eff4871afc6462ccdc2cb57ad34c925f56dfdba3405a3abb

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

      392B

      MD5

      d7efaa1d3a38b6d59c497a8467965645

      SHA1

      53ed5ce491739b07df4e69f1afa30135554fdc7d

      SHA256

      ac03c9d726d0096ee1e5d54be29e9e60173adc4a56a222384a5a89cceb273bac

      SHA512

      e191450bce7dfe162f45496041e7e4f86e2604783934d47fe9b3793f6ea52c991987b55304ec623fbd3ab7e795205c9578a21ee4472c9fd01e9b3babe7b3fde6

    • C:\Users\Admin\AppData\Local\Temp\Cab976F.tmp
      Filesize

      65KB

      MD5

      ac05d27423a85adc1622c714f2cb6184

      SHA1

      b0fe2b1abddb97837ea0195be70ab2ff14d43198

      SHA256

      c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

      SHA512

      6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    • C:\Users\Admin\AppData\Local\Temp\TarB4DF.tmp
      Filesize

      171KB

      MD5

      9c0c641c06238516f27941aa1166d427

      SHA1

      64cd549fb8cf014fcd9312aa7a5b023847b6c977

      SHA256

      4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

      SHA512

      936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    • C:\Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build2.exe
      Filesize

      385KB

      MD5

      63e4a9cd7a8b37335b5f18cefc5dd9d2

      SHA1

      c781a30935afc452b108cc78724b60f389b78874

      SHA256

      c1e75efde3fd1da605135e5c3ffab0073299c80632d136f8eeba9d4a7c98c70f

      SHA512

      3818b5966938704c5830acb5426db7791f6ae476853248d8984b1aff35a6722a0684bea54a53ef6ded1f301f6de9ed044d45f007457a9c0f3a7ea3afc7bf0ecc

    • C:\Users\Admin\AppData\Local\f2faa2c3-18f3-4644-839e-16b628dedba8\7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4.exe
      Filesize

      729KB

      MD5

      3f51b9adc83302f0a3a63a9ce89b5a25

      SHA1

      934d5c5b4e3c86c9ae3e7df7150cbdee9d24c113

      SHA256

      7c7654e6f0c8b70f2317787fe7b17ba8f42349786243b8438596d89404f968e4

      SHA512

      d7f5d7a15bb6df80234c818e8e92c310643f3493030ac6cf02f7c8865e97125ed530c0a9819b22aec0311b34d329239f33cd4563238d198e6a43b1ca5a90efc4

    • \Users\Admin\AppData\Local\dee9e6a3-2608-4cc5-b0d7-e6d352863677\build3.exe
      Filesize

      299KB

      MD5

      41b883a061c95e9b9cb17d4ca50de770

      SHA1

      1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

      SHA256

      fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

      SHA512

      cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

    • memory/1172-358-0x0000000000900000-0x0000000000A00000-memory.dmp
      Filesize

      1024KB

    • memory/1552-273-0x00000000009A0000-0x0000000000AA0000-memory.dmp
      Filesize

      1024KB

    • memory/2064-303-0x00000000008A0000-0x00000000009A0000-memory.dmp
      Filesize

      1024KB

    • memory/2112-236-0x0000000000400000-0x0000000000643000-memory.dmp
      Filesize

      2.3MB

    • memory/2112-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2112-82-0x0000000000400000-0x0000000000643000-memory.dmp
      Filesize

      2.3MB

    • memory/2112-81-0x0000000000400000-0x0000000000643000-memory.dmp
      Filesize

      2.3MB

    • memory/2112-78-0x0000000000400000-0x0000000000643000-memory.dmp
      Filesize

      2.3MB

    • memory/2128-331-0x0000000000990000-0x0000000000A90000-memory.dmp
      Filesize

      1024KB

    • memory/2356-217-0x0000000000400000-0x0000000000406000-memory.dmp
      Filesize

      24KB

    • memory/2356-209-0x0000000000400000-0x0000000000406000-memory.dmp
      Filesize

      24KB

    • memory/2356-204-0x0000000000400000-0x0000000000406000-memory.dmp
      Filesize

      24KB

    • memory/2492-201-0x0000000000940000-0x0000000000A40000-memory.dmp
      Filesize

      1024KB

    • memory/2492-203-0x0000000000230000-0x0000000000234000-memory.dmp
      Filesize

      16KB

    • memory/2624-74-0x0000000000230000-0x0000000000260000-memory.dmp
      Filesize

      192KB

    • memory/2624-73-0x0000000000630000-0x0000000000730000-memory.dmp
      Filesize

      1024KB

    • memory/2676-56-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-37-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-59-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-58-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-71-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-52-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-51-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-38-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2676-93-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2744-31-0x00000000002E0000-0x0000000000372000-memory.dmp
      Filesize

      584KB

    • memory/2744-32-0x00000000002E0000-0x0000000000372000-memory.dmp
      Filesize

      584KB

    • memory/2796-247-0x0000000000890000-0x0000000000990000-memory.dmp
      Filesize

      1024KB

    • memory/2880-0-0x00000000004D0000-0x0000000000562000-memory.dmp
      Filesize

      584KB

    • memory/2880-7-0x00000000004D0000-0x0000000000562000-memory.dmp
      Filesize

      584KB

    • memory/2880-3-0x0000000001DC0000-0x0000000001EDB000-memory.dmp
      Filesize

      1.1MB

    • memory/2880-1-0x00000000004D0000-0x0000000000562000-memory.dmp
      Filesize

      584KB

    • memory/3036-29-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3036-9-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3036-8-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3036-5-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3036-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB