Analysis

  • max time kernel
    147s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    11/12/2023, 15:50 UTC

General

  • Target

    tuc5.exe

  • Size

    6.9MB

  • MD5

    930eb46b398728049653d70dc423dbef

  • SHA1

    129e4f3f4e1ffa3b9cf7bdea3927703ad59732ae

  • SHA256

    4faef0e849714037ba0f7a835e62191859de4065fbb2fc945f31af1ec7806c00

  • SHA512

    d70da19b9c48dab29d8fdbc1264ea275100a9498d5bb5cfd2be7b5b5ff0b8185155ed96c07048fdba172c6593f403c5068a0c20eac09d1c45317b0bd6b26042a

  • SSDEEP

    196608:SxOlhkHxfDumIwWJfU1IzKkGjAqiuGIqOg9zj:BjkHxfKTnJjzKkRtF9zj

Score
7/10

Malware Config

Signatures

  • 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.

  • Drops file in Program Files directory 63 IoCs
  • Runs net.exe
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tuc5.exe
    "C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2460
    • C:\Users\Admin\AppData\Local\Temp\is-LDNNC.tmp\tuc5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-LDNNC.tmp\tuc5.tmp" /SL5="$500F8,6950053,68096,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1916
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:2000
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
          3⤵
          • Executes dropped EXE
          PID:1680
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2920
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:588
          • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
            "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
            3⤵
            • Executes dropped EXE
            PID:2560

      Network

      • flag-ru
        DNS
        bxtidid.com
        wmaconvert.exe
        Remote address:
        152.89.198.214:53
        Request
        bxtidid.com
        IN A
        Response
        bxtidid.com
        IN A
        185.196.8.22
      • flag-us
        GET
        http://bxtidid.com/click/?counter=de7ef49b2c006853fb386c7b6202a0403dff1905c311578eaae3c7edb62dde24353e1d9a943e9d15038842974dbc1dbaf7a1439f538166429e289d58869b3a226d55f676647fc2813369d184da325a508cdb0ff119cf
        wmaconvert.exe
        Remote address:
        185.196.8.22:80
        Request
        GET /click/?counter=de7ef49b2c006853fb386c7b6202a0403dff1905c311578eaae3c7edb62dde24353e1d9a943e9d15038842974dbc1dbaf7a1439f538166429e289d58869b3a226d55f676647fc2813369d184da325a508cdb0ff119cf HTTP/1.1
        Host: bxtidid.com
        User-Agent: Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US)
        Response
        HTTP/1.1 200 OK
        Server: nginx/1.20.1
        Date: Mon, 11 Dec 2023 15:52:23 GMT
        Content-Type: text/html; charset=UTF-8
        Transfer-Encoding: chunked
        Connection: keep-alive
        X-Powered-By: PHP/7.4.33
      • 185.196.8.22:80
        http://bxtidid.com/click/?counter=de7ef49b2c006853fb386c7b6202a0403dff1905c311578eaae3c7edb62dde24353e1d9a943e9d15038842974dbc1dbaf7a1439f538166429e289d58869b3a226d55f676647fc2813369d184da325a508cdb0ff119cf
        http
        wmaconvert.exe
        485 B
        612 B
        4
        4

        HTTP Request

        GET http://bxtidid.com/click/?counter=de7ef49b2c006853fb386c7b6202a0403dff1905c311578eaae3c7edb62dde24353e1d9a943e9d15038842974dbc1dbaf7a1439f538166429e289d58869b3a226d55f676647fc2813369d184da325a508cdb0ff119cf

        HTTP Response

        200
      • 152.89.198.214:53
        bxtidid.com
        dns
        wmaconvert.exe
        57 B
        84 B
        1
        1

        DNS Request

        bxtidid.com

        DNS Response

        185.196.8.22

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        832KB

        MD5

        9b70ef45af6d0adf2203e6b0a876eb0b

        SHA1

        8b4c9549d3b8fb859334f125ecb11ce56808f588

        SHA256

        a0de5a9c388e8f5819d9ca9c52b6417b124b6660bd4794a7c0df39ccc3248a25

        SHA512

        311e3ac2037a16930c1a6c681640163b91b9bae5a0e840836b92a1b9196712e5d3724c246472a7a059a22b0d3c4291057d676f69e3cfb684604c195a8a5e8dbc

      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        1.8MB

        MD5

        31a67cb10577d20a96937eec6a9b99bd

        SHA1

        a861888ce00888370a85dc2c7925fb4178aa7a2c

        SHA256

        3db1a59d28b184bacc5ac11a362e5c5293118f5bc7948d51def377474def7ff4

        SHA512

        0ca7b34bdee6a0a12feed7be7bf11cca882233353ae382d221a856007d3a396e73d95f230eab7fb2e1e4e361caee8c6b09cf9a3dd5007b732869f8f63f2b8839

      • \Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        1024KB

        MD5

        586ede59d1f0ba2e00a0bc6bb92e2d09

        SHA1

        788da4c1e96f561cbc22e0d8505b62b9fc668f79

        SHA256

        6670c4c07896a38770489e328d4addc1d25a280557353aeab57e0b3a699646e6

        SHA512

        bd5f5d97bd9960a545e0334763f373179fe421d057cb8b7259e36db2f7cc6dd8c58c9e4b2a2b0e15dc768ee674a904ab46b3cdf5b91a14150b4ef2347d42e2f8

      • \Users\Admin\AppData\Local\Temp\is-0H4A6.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • \Users\Admin\AppData\Local\Temp\is-0H4A6.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • \Users\Admin\AppData\Local\Temp\is-0H4A6.tmp\_isetup\_shfoldr.dll

        Filesize

        22KB

        MD5

        92dc6ef532fbb4a5c3201469a5b5eb63

        SHA1

        3e89ff837147c16b4e41c30d6c796374e0b8e62c

        SHA256

        9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

        SHA512

        9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

      • \Users\Admin\AppData\Local\Temp\is-LDNNC.tmp\tuc5.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • memory/1680-153-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1680-154-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1680-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1680-157-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1916-150-0x00000000034C0000-0x000000000368F000-memory.dmp

        Filesize

        1.8MB

      • memory/1916-7-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/1916-165-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/1916-166-0x00000000034C0000-0x000000000368F000-memory.dmp

        Filesize

        1.8MB

      • memory/1916-163-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/2460-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2460-162-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2560-164-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-183-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-159-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-170-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-173-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-174-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-177-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-180-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-185-0x0000000002610000-0x00000000026AE000-memory.dmp

        Filesize

        632KB

      • memory/2560-190-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-193-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-196-0x0000000002610000-0x00000000026AE000-memory.dmp

        Filesize

        632KB

      • memory/2560-197-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-200-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-203-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-206-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-210-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2560-213-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

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