Resubmissions

24/03/2024, 17:36

240324-v6mkpseb47 10

24/03/2024, 17:25

240324-vzb6dsea48 10

24/03/2024, 15:03

240324-sfgknagb51 10

24/03/2024, 14:25

240324-rrgjcsdb88 10

Analysis

  • max time kernel
    160s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2024, 15:03

General

  • Target

    e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.exe

  • Size

    2.1MB

  • MD5

    530e5b703869db00c3b0814025c199c0

  • SHA1

    bacd94bd03b21e5f5ecae37acf070340f7f33222

  • SHA256

    e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46

  • SHA512

    8d5711efea6b95cb74f2b298dd193241f29941311009240787a7930ecbc625686b8f56a9807b711b351fbc2e964c3c817c253ccc75f9db1a5bdff2b9e9e550b8

  • SSDEEP

    49152:32IonT/SO6ZebdP47Q2jsCKC3LAxIJ57SCD7T0S/48I:mIZDZkQ70b1xInxD/48I

Malware Config

Extracted

Family

socks5systemz

C2

http://ckzkovl.net/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c644db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9ed92993c

http://fyumflz.ru/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c644db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9ed92993c

Signatures

  • Detect Socks5Systemz Payload 2 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 2 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.exe
    "C:\Users\Admin\AppData\Local\Temp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Users\Admin\AppData\Local\Temp\is-ST18D.tmp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ST18D.tmp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.tmp" /SL5="$601CA,1887224,54272,C:\Users\Admin\AppData\Local\Temp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3256
      • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe
        "C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2144
  • 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 --mojo-platform-channel-handle=3788 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:548

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

            Filesize

            2.2MB

            MD5

            f5accb44aea64489ee12bd31c9c3dbb7

            SHA1

            34341d42e3664cc7a1682af3a0c98e566fb96d26

            SHA256

            c8055d97a9d2d52abfccbef80d16a3f38d7c2108c1524c1e5aee14002aab98fe

            SHA512

            1edbe7b50dd0bb1170dd0da0eeb53c33e52401453c0d6bf9b7bf1dd5dad670180d026091d92d022cb43f17cc0aef9b80414b1ee2baa8d1f518d53ca2b195ade4

          • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

            Filesize

            1.4MB

            MD5

            6fbc0e4f42e977d67b4e341357296ac3

            SHA1

            496902525c87b78c13ba9af2f80b595a9d5a8186

            SHA256

            122cbb0bfac6d98fd71df5e834bb2afe750f8cba4bffbcf842017345ca4afe37

            SHA512

            6053e18e31a40847b8db0a2524db96be94e50980ed035116731903c3b2922d470bac43636bd47109cc5c2415514db374feb7e971f095ca3146ce38c9e288ba4c

          • C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe

            Filesize

            128KB

            MD5

            47a66f822c1889222e63cde210ed9a23

            SHA1

            cd65db1355cbc1f4d976a231dadb29eab34c592f

            SHA256

            d0031ae95efdd1991c3c4c271b1ebe4d7ab33caf334a871eb09fd2ee83bfd58a

            SHA512

            c6694bde6c1995f8ab1fdcda20a266555913e2bc6f91348a838b0bd0581bca08f478e4f8f4c0bd3ba45fd7301492844f9a4fc3ffa6bdbaf393b7681dd8858338

          • C:\Users\Admin\AppData\Local\Temp\is-S3DOL.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • C:\Users\Admin\AppData\Local\Temp\is-ST18D.tmp\e44d878e1be2235927f48fa0d547e95a8b64e92e31a920a5a3439b9c79657b46.tmp

            Filesize

            677KB

            MD5

            5a1e3d46cb5a24f8e50b2a59d2ba1cf3

            SHA1

            fe86894c4757c144449bc744649b7fb9e03346f1

            SHA256

            d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d

            SHA512

            a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af

          • memory/1692-2-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/1692-0-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/1692-38-0x0000000000400000-0x0000000000414000-memory.dmp

            Filesize

            80KB

          • memory/2144-68-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-80-0x0000000000810000-0x00000000008B2000-memory.dmp

            Filesize

            648KB

          • memory/2144-94-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-91-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-88-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-46-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-48-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-85-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-51-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-82-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-55-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-56-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-59-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-62-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-65-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-69-0x0000000000810000-0x00000000008B2000-memory.dmp

            Filesize

            648KB

          • memory/2144-78-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/2144-75-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/3256-41-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/3256-39-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/3256-44-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/3256-40-0x0000000000400000-0x000000000062F000-memory.dmp

            Filesize

            2.2MB

          • memory/4088-7-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/4088-52-0x0000000002240000-0x0000000002241000-memory.dmp

            Filesize

            4KB

          • memory/4088-49-0x0000000000400000-0x00000000004B8000-memory.dmp

            Filesize

            736KB