Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    03/08/2024, 04:08

General

  • Target

    0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe

  • Size

    3.8MB

  • MD5

    191e14b3e7e5165989cf70fb472c5ecc

  • SHA1

    5f6f4415606e5e5225f9af195d85979d3800d152

  • SHA256

    0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a

  • SHA512

    0b4a8b3728bbc666fb5077440b4da0cba09b235b6d8fd925ffcdf4b3e842b0aab6a911bee8a701c88ad1d2284f5b9ef5b499250863276b5203cab977c4c8f4b6

  • SSDEEP

    98304:Np2aqV1SQOv/u1ijP8vaiaD+hKFEutlW0z5uKWoXyl3dK:Ox/PORjEvF2WuSm5ooXyl34

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 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.

  • 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe
    "C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2388
    • C:\Users\Admin\AppData\Local\Temp\is-PT8BC.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-PT8BC.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp" /SL5="$400F8,3759147,54272,C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.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:2188
      • C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
        "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2788
      • C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
        "C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2768

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe

          Filesize

          4.5MB

          MD5

          7a498a1353864e6c8dbb8823947f552d

          SHA1

          34474e1a9a42f3957ddff34cc1f5b127d5795eaa

          SHA256

          20c9db025e28991da1d849ab68d1932c6027f6568e32d8fa13d484e4c5236cdf

          SHA512

          4b700290a77c5fcfe2058397310658afcbc16b1a35784f54f1ad52ee667fb68ec15726c70928a00b7afb1bf8d96a184b875899cd736837fc9bf170f15e6596a3

        • \Users\Admin\AppData\Local\Temp\is-PT8BC.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp

          Filesize

          692KB

          MD5

          849bb5c3439284a175f581ec281ca92e

          SHA1

          8bd0737eac1a74de4d62d66911ca7ed9f61cbc0f

          SHA256

          33a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206

          SHA512

          ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625

        • \Users\Admin\AppData\Local\Temp\is-RA5BO.tmp\_isetup\_iscrypt.dll

          Filesize

          2KB

          MD5

          a69559718ab506675e907fe49deb71e9

          SHA1

          bc8f404ffdb1960b50c12ff9413c893b56f2e36f

          SHA256

          2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

          SHA512

          e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

        • \Users\Admin\AppData\Local\Temp\is-RA5BO.tmp\_isetup\_shfoldr.dll

          Filesize

          22KB

          MD5

          92dc6ef532fbb4a5c3201469a5b5eb63

          SHA1

          3e89ff837147c16b4e41c30d6c796374e0b8e62c

          SHA256

          9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

          SHA512

          9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

        • memory/2188-18-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/2188-56-0x0000000004FA0000-0x0000000005420000-memory.dmp

          Filesize

          4.5MB

        • memory/2188-70-0x0000000004FA0000-0x0000000005420000-memory.dmp

          Filesize

          4.5MB

        • memory/2188-66-0x0000000000400000-0x00000000004BD000-memory.dmp

          Filesize

          756KB

        • memory/2388-65-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2388-0-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/2388-2-0x0000000000401000-0x000000000040B000-memory.dmp

          Filesize

          40KB

        • memory/2768-86-0x00000000023C0000-0x0000000002462000-memory.dmp

          Filesize

          648KB

        • memory/2768-85-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-110-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-69-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-107-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-73-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-75-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-79-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-82-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-63-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-102-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-90-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-95-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-98-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2768-101-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2788-57-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2788-58-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB

        • memory/2788-61-0x0000000000400000-0x0000000000880000-memory.dmp

          Filesize

          4.5MB