Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-09-2024 13:22

General

  • Target

    file.exe

  • Size

    394KB

  • MD5

    c41324a0ed75ade060a048d20be4bb0b

  • SHA1

    cb60c01d5de4c7666095e61553573e813625d177

  • SHA256

    ef0ad84528750e2dc891ed819018c7c0d28fe038c92fd2612a5f26ad9863736c

  • SHA512

    7874707dfb5c2107f24d6889b4720fe8bc127028f49b6a88869b0769f8956bb4135a3a3b926e03adfcfb5dddf5475451ad7ec7bac106751eb34015e4b9ee116c

  • SSDEEP

    12288:aloPGt8jdL8EkgOMAcr08Y2ji7GHVPB5n8Ba8r:ql2dLig5AcA8YOiSHVJ5nUaQ

Malware Config

Extracted

Family

vidar

Version

11

Botnet

3a15237aa92dcd8ccca447211fb5fc2a

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

  • Detect Vidar Stealer 14 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Drops startup file 64 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 64 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 64 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 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\ProgramData\GCGHCBKFCF.exe
        "C:\ProgramData\GCGHCBKFCF.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1728
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:1028
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1108
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1108 -s 252
              5⤵
              • Program crash
              PID:1692
        • C:\ProgramData\KEGCFCAKFH.exe
          "C:\ProgramData\KEGCFCAKFH.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:556
          • C:\Users\Admin\AppData\Local\Temp\Software\IDSM.exe
            "C:\Users\Admin\AppData\Local\Temp\Software\IDSM.exe"
            4⤵
            • Drops startup file
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:892
            • C:\Users\Admin\AppData\Local\Temp\Software\MSDNG.exe
              "C:\Users\Admin\AppData\Local\Temp\Software\MSDNG.exe" --checker
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1828
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JECAFHJEGCFC" & exit
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1952
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            4⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2864

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\GCGHCBKFCF.exe

      Filesize

      362KB

      MD5

      583886f724d722f72c3ae477b0d2d40f

      SHA1

      7234b70620f127f291e3755385299dfe6d3fdfbd

      SHA256

      1957ace1277b9ac0b49bdce7485dfb01cdd208dc489e9ae079b528ef212b39ec

      SHA512

      499dc5703f327ef774eb44ce500b7219f102b44b6622e14fa01c02c8e399ebaae3021bbe992606677a0df64fb213f0932ca4e6d28e3e46ab08a4431aa5dc662b

    • C:\Users\Admin\AppData\Local\Temp\Cab986B.tmp

      Filesize

      70KB

      MD5

      49aebf8cbd62d92ac215b2923fb1b9f5

      SHA1

      1723be06719828dda65ad804298d0431f6aff976

      SHA256

      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

      SHA512

      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    • C:\Users\Admin\AppData\Local\Temp\Tar988D.tmp

      Filesize

      181KB

      MD5

      4ea6026cf93ec6338144661bf1202cd1

      SHA1

      a1dec9044f750ad887935a01430bf49322fbdcb7

      SHA256

      8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

      SHA512

      6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IDSM_a9b3fdafafd04474979758d2113faef3.lnk

      Filesize

      1KB

      MD5

      5583adb4dfd1866d93dfdd7ab922a2ff

      SHA1

      b4d6da42dc5caa35440c9a3f984618fc916efd1c

      SHA256

      82ea7e9effd774d9e14eae9e940d133522c01a175aa6e1cba151580ac8dc6dfd

      SHA512

      393131d95d1485b36d26b74d42ff3adfdd8f092fe7fe8b565830ce67be46b3556632536224b8eb54614c6a154b328a4f6f1af1707f5bd78b3f21c4783a359bff

    • \ProgramData\KEGCFCAKFH.exe

      Filesize

      409KB

      MD5

      39af78c7dafc5b1b5b42268fd412b6fd

      SHA1

      f91d6871cb72874f02d58a8ca099941696b69729

      SHA256

      3878f5b404de6159915d9eb4e00a59dd303c2e36ec1d36a883c47e0d51462556

      SHA512

      bd7fdf9dd91c0039da3e1c5427c4afb2558ed2e375583dbdb39dfd2578ab2e204f0d7d92e79d178ebf06cc30ce38f169998554129aec73ee8c244e09ff685f4d

    • \ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • \ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • memory/556-561-0x00000000004F0000-0x00000000004F1000-memory.dmp

      Filesize

      4KB

    • memory/556-542-0x0000000001180000-0x000000000122A000-memory.dmp

      Filesize

      680KB

    • memory/892-574-0x00000000008C0000-0x000000000096A000-memory.dmp

      Filesize

      680KB

    • memory/1108-518-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1108-522-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-514-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-515-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-516-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-517-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-512-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1108-520-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1728-500-0x000000007349E000-0x000000007349F000-memory.dmp

      Filesize

      4KB

    • memory/1728-501-0x0000000000160000-0x00000000001C0000-memory.dmp

      Filesize

      384KB

    • memory/1728-524-0x0000000073490000-0x0000000073B7E000-memory.dmp

      Filesize

      6.9MB

    • memory/1828-602-0x0000000000B60000-0x0000000000C0A000-memory.dmp

      Filesize

      680KB

    • memory/2156-7-0x0000000074970000-0x000000007505E000-memory.dmp

      Filesize

      6.9MB

    • memory/2156-17-0x0000000074970000-0x000000007505E000-memory.dmp

      Filesize

      6.9MB

    • memory/2156-0-0x000000007497E000-0x000000007497F000-memory.dmp

      Filesize

      4KB

    • memory/2156-1-0x0000000001000000-0x0000000001068000-memory.dmp

      Filesize

      416KB

    • memory/2576-207-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-196-0x0000000020270000-0x00000000204CF000-memory.dmp

      Filesize

      2.4MB

    • memory/2576-438-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-419-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-376-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-357-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-13-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-233-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-5-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-16-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-177-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-158-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-8-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-9-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-14-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2576-6-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-3-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/2576-4-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB