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Analysis

  • max time kernel
    141s
  • max time network
    138s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11/10/2024, 20:56

General

  • Target

    stail.exe

  • Size

    4.0MB

  • MD5

    882f0efe9d2215736da375b3542e1575

  • SHA1

    b8f47bc05c2a0d7d336f7c201fc09e6af3b93a41

  • SHA256

    1bda055af670cb8e8f37d4860197b58cea1464c16dfaa31fadf42a9eedee8b25

  • SHA512

    e385accd0c6300c38abe7f8f55ef9fcb5938cbc5baf69f858a43eb36b36d892888ba6a388643dda1bc09cefffcdbda55549d95edf62dcd35b4b0420da109e888

  • SSDEEP

    98304:xdFkdsb9FbCaPoEyB+U9j5bAANbIN8LwjleZvbpmBe:DOSBFpotj5XbW8eqvbpmBe

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stail.exe
    "C:\Users\Admin\AppData\Local\Temp\stail.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Users\Admin\AppData\Local\Temp\is-568MK.tmp\is-V5683.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-568MK.tmp\is-V5683.tmp" /SL4 $50224 "C:\Users\Admin\AppData\Local\Temp\stail.exe" 3960739 52224
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3952
      • C:\Users\Admin\AppData\Local\Middle Media Player\middlemediaplayer.exe
        "C:\Users\Admin\AppData\Local\Middle Media Player\middlemediaplayer.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Middle Media Player\middlemediaplayer.exe

    Filesize

    3.8MB

    MD5

    b18bc890142dafafa5b2d6bd9f578af4

    SHA1

    2001995e693cedcf7c6ddbed64fcea2eec2bd6bc

    SHA256

    87d1a53293dd226a27620cf479bc41d457f8bbc7da775a69c4426de7e22eead6

    SHA512

    e398b96d6b1315dfa823f90ad6eb4fcaab825c83e0ea0c0c94974eedf235b0bd53bb1fd36b0e5f62a858313d30e0da62c306728d3a7c793692f450fe951cf106

  • C:\Users\Admin\AppData\Local\Temp\is-568MK.tmp\is-V5683.tmp

    Filesize

    647KB

    MD5

    321dc40b1028537e9da09d6cad16b524

    SHA1

    419dc3963cfe7cdf66a1e23718c52d4dc1623d51

    SHA256

    95acf4477c6c852bc972eb835ce3d99356c7c1298d9533bc7ab005566d89996f

    SHA512

    d11dd58068937d67bb0cfca5ed3ab952c796d7579462a9090ec7c8fa7f5da66c30a9ed42d620b4e7be29eb1654a68aadb9a741e1542a6555297d537f7ee4d177

  • \Users\Admin\AppData\Local\Temp\is-H191K.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/516-83-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/516-0-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/516-2-0x0000000000401000-0x000000000040A000-memory.dmp

    Filesize

    36KB

  • memory/3952-13-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/3952-84-0x0000000000400000-0x00000000004B0000-memory.dmp

    Filesize

    704KB

  • memory/4092-91-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-107-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-85-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-88-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-79-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-94-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-97-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-100-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-101-0x0000000000A50000-0x0000000000AF2000-memory.dmp

    Filesize

    648KB

  • memory/4092-80-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-110-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-111-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-114-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-117-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-120-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-123-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-127-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB

  • memory/4092-130-0x0000000000400000-0x00000000007CC000-memory.dmp

    Filesize

    3.8MB