Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    30/05/2024, 23:04

General

  • Target

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe

  • Size

    1.9MB

  • MD5

    d99dd53856f53be0f4bba64928e68f7d

  • SHA1

    cc40af39068479199202606b8eb3c1b234192a69

  • SHA256

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

  • SHA512

    10c10a0c28fe112ae7c000079de7981f8d3f9ecb9ac4668ca692d73dda4e8ebfde711ed5a3ea69f1a55aa1c49028faa1dec50c240c409c971da4a5d7270379e5

  • SSDEEP

    49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

  • Detect Vidar Stealer 10 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe
    "C:\Users\Admin\AppData\Local\Temp\6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Users\Admin\AppData\Local\Temp\katE91.tmp
      C:\Users\Admin\AppData\Local\Temp\katE91.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:2352

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

          Filesize

          1KB

          MD5

          a266bb7dcc38a562631361bbf61dd11b

          SHA1

          3b1efd3a66ea28b16697394703a72ca340a05bd5

          SHA256

          df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

          SHA512

          0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

          Filesize

          342B

          MD5

          147ec02cd3681157b5120e3e22131b7e

          SHA1

          255cc02fe9e72869dc0276d457a33a60d987cf8c

          SHA256

          c106379f9182a53ee3e16ca73c65a25ea27c082f8a2feb10fa83cf2b86ebfac6

          SHA512

          01cccad821c45d1dc8412d30a9ceb2ee1c2aeb5a18cbceb40d85e1ffde95950d2637a40f268b805aed91e7e655babdb7648a44fe62b9f88f41d84d47a3000957

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

          Filesize

          242B

          MD5

          7bb20c8aebb35c5841d5e20f660a8cfb

          SHA1

          c4f0b184511556fc58718fa7ec06853a60aef7c0

          SHA256

          15e89befb58084eda57618c083dd65755395ae151f7670388126ea61d8fd145a

          SHA512

          7417b611650af1d618c0a545988f8e93006a452c4a3a21933f58ccf22f4dc41253a069ff8b5010362bd09d478f029cea749d752147225d7893ec96d752380819

        • C:\Users\Admin\AppData\Local\Temp\Tar12DA.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

        • C:\Users\Admin\AppData\Local\Temp\katE91.tmp

          Filesize

          861KB

          MD5

          66064dbdb70a5eb15ebf3bf65aba254b

          SHA1

          0284fd320f99f62aca800fb1251eff4c31ec4ed7

          SHA256

          6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

          SHA512

          b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

        • memory/2232-20-0x0000000000400000-0x00000000005EC000-memory.dmp

          Filesize

          1.9MB

        • memory/2232-11-0x0000000003300000-0x0000000003449000-memory.dmp

          Filesize

          1.3MB

        • memory/2232-0-0x0000000000220000-0x0000000000221000-memory.dmp

          Filesize

          4KB

        • memory/2352-10-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-15-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-14-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-17-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-8-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-22-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-23-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-18-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-192-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-241-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-243-0x00000000228B0000-0x0000000022B0F000-memory.dmp

          Filesize

          2.4MB

        • memory/2352-254-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/2352-279-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB