Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2024 22:25

General

  • Target

    efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.exe

  • Size

    5.5MB

  • MD5

    be8a94bb2f3ecd49e327ae7c3c6cf3dd

  • SHA1

    de998d83fc381d8b351a9dec0950021c887a327b

  • SHA256

    efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2

  • SHA512

    26021f40144360d705382039a9a659d27b1fd36770788cbfff8286a6b1ff468b58ad53a128bad323ee7f443d85d56337f4bfcad94ced9368a4c9b8c186d33a62

  • SSDEEP

    98304:m4MNANOeGxSe0pDIoBYayQrLb6C+A+THETp+GdFFPRbFXAyLrFU4WK7sy022Qy3:LyANsxSjMbXQrLmA0HE44FJ5QOJU4WK4

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.exe
    "C:\Users\Admin\AppData\Local\Temp\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1872
    • C:\Users\Admin\AppData\Local\Temp\is-FMH0L.tmp\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FMH0L.tmp\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.tmp" /SL5="$501DA,5552432,54272,C:\Users\Admin\AppData\Local\Temp\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3380
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1888
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1288
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4200,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4120 /prefetch:8
    1⤵
      PID:3696

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

      Filesize

      3.3MB

      MD5

      faab2e87fa17725a687300a1e0c1ae26

      SHA1

      45f7128cdab20c1ab7d34e3f54374eae838a05e7

      SHA256

      6d345036ec98aaffdff6b071e097018b576ff81e767533816b4de9adfcc7f57a

      SHA512

      a99e4428c58f47963b9e4265dd6516aece4387ac23839bb02ac308c437177e2fc551fa877c321654c9ff02d8612e31ff525fb91cfbf6b048296e312001dd7038

    • C:\Users\Admin\AppData\Local\Temp\is-ANPFF.tmp\_isetup\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • C:\Users\Admin\AppData\Local\Temp\is-ANPFF.tmp\_isetup\_isdecmp.dll

      Filesize

      32KB

      MD5

      b6f11a0ab7715f570f45900a1fe84732

      SHA1

      77b1201e535445af5ea94c1b03c0a1c34d67a77b

      SHA256

      e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

      SHA512

      78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

    • C:\Users\Admin\AppData\Local\Temp\is-FMH0L.tmp\efb45c44b94103d74d36fce390231dea9c0a001ca181f9cba1f267b3e22757d2.tmp

      Filesize

      680KB

      MD5

      ef9105d68de970efad785e01b21e4e2b

      SHA1

      7fe8801a3e86814972da63a7a943bdc5e31d8888

      SHA256

      381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a

      SHA512

      e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

    • memory/1288-100-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-86-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-121-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-118-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-115-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-112-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-109-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-74-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-106-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-103-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-77-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-80-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-83-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-95-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-89-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1288-92-0x0000000002870000-0x0000000002912000-memory.dmp

      Filesize

      648KB

    • memory/1872-3-0x0000000000401000-0x000000000040B000-memory.dmp

      Filesize

      40KB

    • memory/1872-75-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/1872-0-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/1888-71-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1888-67-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1888-66-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/1888-65-0x0000000000400000-0x0000000000745000-memory.dmp

      Filesize

      3.3MB

    • memory/3380-13-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/3380-76-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB