Analysis

  • max time kernel
    145s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23/03/2024, 09:36

General

  • Target

    8fe9ec621008b29e7c47a4a2fc492d28.exe

  • Size

    2.0MB

  • MD5

    8fe9ec621008b29e7c47a4a2fc492d28

  • SHA1

    f8930f4037b081f0c54b00f0d1e93d936a7af669

  • SHA256

    a7a7a60fa640fc9a4dbdbac52b68a1774bb159b99c179df650c9f41fd4d20a6a

  • SHA512

    2eb25f96e289fee6ad2f70710c39b27c30db889f683a24a4592c47862cfeec84f2c25dacc73d267897f67dc3ec212de4065e0c2719188bc01aaded9af7512b41

  • SSDEEP

    49152:32dOY3q2cSnjXhVR5ZbNk6tpebYwyq0yRa2pQroFa98:m93F1jTR5Z7uM5LkGroFa6

Malware Config

Extracted

Family

socks5systemz

C2

http://dtbydpd.info/search/?q=67e28dd83958f721120bac1a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978f471ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a668ff717c6ec93

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe
    "C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\is-328OB.tmp\8fe9ec621008b29e7c47a4a2fc492d28.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-328OB.tmp\8fe9ec621008b29e7c47a4a2fc492d28.tmp" /SL5="$70126,1717621,54272,C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2236
      • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe
        "C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2692

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

          Filesize

          1.8MB

          MD5

          f782cc8d7fc86f98593827aa303629a1

          SHA1

          70b5f4a95c5af6c32c821f954f0d73112ce0315b

          SHA256

          2595cec4a4386043acc5e658726c68aa82a076057f2a7eb87db53243d4c7062e

          SHA512

          41eb04c69cfe003e6c9ad6488136cd03085326248c3275a3db4d4d64b489cfc43e4edb09b5f9d4443df56c512cd9936854c2be7304b3e8aa5c4230a08e1c1775

        • \Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe

          Filesize

          896KB

          MD5

          a346672ab18ea3c0021f6b67c3685725

          SHA1

          78a918ec1c41a78a2b4ae67991915f381c3c0e67

          SHA256

          e44e9596738ce606f29eee9159dbce58838ddd32f496a29626a497776f51917b

          SHA512

          6505b5128b574610d69cf0524cd2a6455514547601c51e207dc80900976ca211a657b218f78ca10aeade6305dceaabb024dc55f510bb0f084fdaf3189e1be9ea

        • \Users\Admin\AppData\Local\Temp\is-328OB.tmp\8fe9ec621008b29e7c47a4a2fc492d28.tmp

          Filesize

          677KB

          MD5

          88d7ea648defbc2597fa38ef83112eda

          SHA1

          2bce9acfb1b5e08dc29c695eff12fc80949c6440

          SHA256

          5a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68

          SHA512

          050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a

        • \Users\Admin\AppData\Local\Temp\is-D5H2U.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-D5H2U.tmp\_isetup\_isdecmp.dll

          Filesize

          32KB

          MD5

          b6f11a0ab7715f570f45900a1fe84732

          SHA1

          77b1201e535445af5ea94c1b03c0a1c34d67a77b

          SHA256

          e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

          SHA512

          78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

        • \Users\Admin\AppData\Local\Temp\is-D5H2U.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • memory/1116-45-0x0000000003A10000-0x0000000003BE5000-memory.dmp

          Filesize

          1.8MB

        • memory/1116-8-0x00000000001D0000-0x00000000001D1000-memory.dmp

          Filesize

          4KB

        • memory/1116-61-0x0000000003A10000-0x0000000003BE5000-memory.dmp

          Filesize

          1.8MB

        • memory/1116-60-0x00000000001D0000-0x00000000001D1000-memory.dmp

          Filesize

          4KB

        • memory/1116-58-0x0000000000400000-0x00000000004B8000-memory.dmp

          Filesize

          736KB

        • memory/2172-57-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2172-1-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2236-47-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2236-49-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2236-48-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2236-52-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-74-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-79-0x00000000025C0000-0x0000000002662000-memory.dmp

          Filesize

          648KB

        • memory/2692-54-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-64-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-66-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-68-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-71-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-56-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-77-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-59-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-78-0x00000000025C0000-0x0000000002662000-memory.dmp

          Filesize

          648KB

        • memory/2692-85-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-88-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-91-0x00000000025C0000-0x0000000002662000-memory.dmp

          Filesize

          648KB

        • memory/2692-92-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-95-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-98-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-101-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-105-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB

        • memory/2692-108-0x0000000000400000-0x00000000005D5000-memory.dmp

          Filesize

          1.8MB