Analysis

  • max time kernel
    292s
  • max time network
    298s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    20/06/2024, 22:45

General

  • Target
    4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.exe
  • Size 4.5MB
  • Sample240620-2ppr3averp
  • SHA256 4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • ezoibue.ua

  • http://ezoibue.ua/search/?q=67e28dd86809f27b415ba51b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff718c2ec939a3f

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 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).

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.exe
    "C:\Users\Admin\AppData\Local\Temp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3508
    • C:\Users\Admin\AppData\Local\Temp\is-QHCLR.tmp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QHCLR.tmp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.tmp" /SL5="$80200,4499822,54272,C:\Users\Admin\AppData\Local\Temp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4176
      • C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning.exe
        "C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1928
      • C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning.exe
        "C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4776

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        mediaplayerrptuning.exe

        • Path C:\Users\Admin\AppData\Local\Media Player RPTuning\mediaplayerrptuning.exe
        • Size 2.5MB
        • SHA256 25d459e7c8277226e48aee68586702351ee41e532304fc442a18747a8903270e
        • MD5 SHA1 SHA512 SSDEEP

        4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-QHCLR.tmp\4f0cbd277c13ad39ee65166fe3d3b67438c3c1b46c7ce08dd1b1a47d55a9079e.tmp
        • Size 680KB
        • SHA256 6245ecd6d0ec4c5ea091be6f734185f645886c1d8af5fe4b0c0df0661b4ce361
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

        • Path \Users\Admin\AppData\Local\Temp\is-84519.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        memory/1928-59-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/1928-61-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/1928-63-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/3508-3-0x0000000000401000-0x000000000040B000-memory.dmp

        memory/3508-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/3508-67-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4176-68-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4176-11-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4776-81-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-100-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-72-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-75-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-78-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-66-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-84-0x0000000000920000-0x00000000009C2000-memory.dmp

        memory/4776-86-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-91-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-94-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-97-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-69-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-103-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-106-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-110-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-113-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-116-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-119-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-122-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-125-0x0000000000400000-0x0000000000685000-memory.dmp

        memory/4776-130-0x0000000000400000-0x0000000000685000-memory.dmp