Analysis

  • max time kernel
    150s
  • max time network
    161s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23/03/2024, 12:15

General

  • Target

    5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe

  • Size

    2.0MB

  • MD5

    ded765bc5ba4afdd70cdca87b06e031f

  • SHA1

    e422aec0d328480a4de087d57eb4c4ff5d4aba5e

  • SHA256

    5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2

  • SHA512

    3abeab5b8268a885ed4b86a5dd7dbc83cfa4d4e53473c55fb92f7347e9732f108fdfcec3b8f1d3a1153c96dd44cd25224df343ded65ba54da603bdd5093bbfb8

  • SSDEEP

    49152:32qrMGcmhsZWMZA9wvRXHURUwDbNVrhs2zFb+Z90se7D:m6V0WMZXXiFbjrhs21w9bc

Malware Config

Extracted

Family

socks5systemz

C2

http://bfkrfdz.com/search/?q=67e28dd83a0ba47b435ca84a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1ee8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe10c9e994933d

http://bfkrfdz.com/search/?q=67e28dd83a0ba47b435ca84a7c27d78406abdd88be4b12eab517aa5c96bd86eb978f4e845a8bbc896c58e713bc90c94b36b5281fc235a925ed3e03d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949b32cb6e9f10

Signatures

  • Detect Socks5Systemz Payload 5 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 WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe
    "C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1476
    • C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp" /SL5="$90070,1769802,54272,C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3500
      • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
        "C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3912

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          2.1MB

          MD5

          a689446e3c009a816949c13a4369ef96

          SHA1

          9da43499c84cb0e5fb3fdc2d9c5862dbc7c30071

          SHA256

          8c605cb6c45bc30ca483ad375e31dafe212c9543a8f3ce27e4c93d0961758345

          SHA512

          d4fce27bdcf05afec2e572639e87b86226e457f4aebe11886ae44df111087a75eae5a986aca964bef2070c2b4eda146ab1f8b7ad3c0883b54fe226f4dfc9935c

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          512KB

          MD5

          92e066358873470bbb6c02636d32b7d6

          SHA1

          8a87323ef38616062fd5edcfbfb1f2c076aea733

          SHA256

          0a43882ede90562d29e083264b4d1541c4bdb370ecaf24a6b460960f204a15f8

          SHA512

          017b4e34248bc3ee642f5a8d72e854f198eaacda3f176265fb86a9a968fb6561cd5e633cea6920cd2c9aa4f728ab996b853082872052b49b57d86bfb089bdb71

        • C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

          Filesize

          576KB

          MD5

          441fb00bb4abe338a6c4330fac7b33a6

          SHA1

          7d4db62bed1868cb816097e3c4cf4ab5f7e8e626

          SHA256

          e2d2abb06c550ea3946ffb72d2a540265ad282ff22fbfd10ed85a9e28a568fb2

          SHA512

          185c2f019e14e03220715ae10f20fd7411cdb66318561e2132e0468bf5008c7edb7b806412d599f2494b706f03fc83601febaa3c83dd37db1a316e0e87797c3f

        • C:\Users\Admin\AppData\Local\Temp\is-M9LQ4.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp

          Filesize

          677KB

          MD5

          92f7775908bb12183914bb0753782913

          SHA1

          8d1091da36832942d48f2fe9a1a216fdd556b9c4

          SHA256

          a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed

          SHA512

          7e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39

        • memory/1476-2-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1476-47-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1476-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/3008-7-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/3008-50-0x0000000002440000-0x0000000002441000-memory.dmp

          Filesize

          4KB

        • memory/3008-48-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/3500-38-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3500-42-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3500-43-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3500-39-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-54-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-77-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-53-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-46-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-57-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-60-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-63-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-66-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-67-0x0000000000900000-0x00000000009A2000-memory.dmp

          Filesize

          648KB

        • memory/3912-69-0x0000000000900000-0x00000000009A2000-memory.dmp

          Filesize

          648KB

        • memory/3912-74-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-49-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-78-0x0000000000900000-0x00000000009A2000-memory.dmp

          Filesize

          648KB

        • memory/3912-81-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-84-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-87-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-90-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-91-0x0000000000900000-0x00000000009A2000-memory.dmp

          Filesize

          648KB

        • memory/3912-92-0x0000000000900000-0x00000000009A2000-memory.dmp

          Filesize

          648KB

        • memory/3912-96-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB

        • memory/3912-99-0x0000000000400000-0x0000000000611000-memory.dmp

          Filesize

          2.1MB