Analysis

  • max time kernel
    142s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/08/2024, 09:56

General

  • Target

    6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.exe

  • Size

    3.6MB

  • MD5

    28d59e3ccaffa48b2964952d3320bf67

  • SHA1

    00e8c20b175423088dcd36b5d5c9f11a6735c865

  • SHA256

    6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2

  • SHA512

    0861e2e3d4d513fa1ce6d125e3fcec659dff99b3ec6290219441545af92cdb4550e9ea9b2f3ad86ee5e99659650dd059e656901c948cb71ac972c58f0a5fbc49

  • SSDEEP

    98304:NSLZ33HRTKoyhmC6UzD02qxGtOsG09ht/LEeyhF8dt:U9hTohmC6r7GAYT/LS8T

Malware Config

Signatures

  • Detect Socks5Systemz Payload 3 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.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.exe
    "C:\Users\Admin\AppData\Local\Temp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:212
    • C:\Users\Admin\AppData\Local\Temp\is-ARTR0.tmp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ARTR0.tmp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.tmp" /SL5="$12004C,3498625,54272,C:\Users\Admin\AppData\Local\Temp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Users\Admin\AppData\Local\Combiner Free\combinerfree.exe
        "C:\Users\Admin\AppData\Local\Combiner Free\combinerfree.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:872
      • C:\Users\Admin\AppData\Local\Combiner Free\combinerfree.exe
        "C:\Users\Admin\AppData\Local\Combiner Free\combinerfree.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1672

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Combiner Free\combinerfree.exe

          Filesize

          2.8MB

          MD5

          b024f70ea23c885dbfb9d7fbe1f63337

          SHA1

          6f6ccfbc40f7c6decb61efa127bf15c85cda762d

          SHA256

          fde113cf30161b4d9b53d83abe4e257eda0ceb7c6881da32bae924123641849b

          SHA512

          4c5ebdc95174230c27f0bcaa9b21b061db99fc475721aabc909ceadb6d57453f3d586ccc3731feae248da7d167a497f95193ff66bace1cb8b775d8f13e7bcce8

        • C:\Users\Admin\AppData\Local\Temp\is-ARTR0.tmp\6751bebfe1f1454332d3bee1b7e9946f5720ddf4608cc4233c5b18916ea74cc2.tmp

          Filesize

          692KB

          MD5

          57cadefd8d9a7bec777ab1e7a1329b43

          SHA1

          a9e5bf8cc5456e109a9d6356988f7ff8a9da299f

          SHA256

          241a3f9c3a0e0e477eb0b67acabaf0911d6a44bcbeefb001de35b5427ff3dacc

          SHA512

          850893c27ea24d9c1891dc7556ea3bb0f517b559fa80079f5e3b583ba7b2ba8c7c20f52afcf56d844829ca852222638f0f1f6452ac8f94b36356e938dcfe0306

        • C:\Users\Admin\AppData\Local\Temp\is-MMU60.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • memory/212-60-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/212-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/212-1-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/872-52-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/872-54-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/872-53-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/872-57-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-68-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-84-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-62-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-65-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-108-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-71-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-74-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-76-0x0000000000940000-0x00000000009E2000-memory.dmp

          Filesize

          648KB

        • memory/1672-79-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-104-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-87-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-90-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-93-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-96-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-99-0x0000000000400000-0x00000000006D4000-memory.dmp

          Filesize

          2.8MB

        • memory/1672-100-0x0000000000940000-0x00000000009E2000-memory.dmp

          Filesize

          648KB

        • memory/1672-101-0x0000000000940000-0x00000000009E2000-memory.dmp

          Filesize

          648KB

        • memory/2628-61-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/2628-10-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB