Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    24-06-2024 18:16

General

  • Target

    e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.exe

  • Size

    4.8MB

  • MD5

    1708a62a342a388c958166b8e97fa9c3

  • SHA1

    2778da8bf5964c7d95304bcd5973435a306adaf2

  • SHA256

    e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941

  • SHA512

    9d1b09235169afadac7f8baa2d6d137230f661b6bccccdc7e619f77f0eecea329c6e4986e43fe4c35df2841fc26b006dfd2122d895e670b91cbf90503ef462a9

  • SSDEEP

    98304:m0c7HP9xPn1XP2ZfIjaJwcJQnacSmYjtzKuykrFE:7+bEq2JSF92tzBS

Malware Config

Extracted

Family

socks5systemz

C2

boykgfb.com

http://boykgfb.com/search/?q=67e28dd83d0ea428165baf167c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c5ec959e39

http://boykgfb.com/search/?q=67e28dd83d0ea428165baf167c27d78406abdd88be4b12eab517aa5c96bd86ea92834496148ab2865b77f80ebad9c40f7cb63037ed2ab423a4664383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e6979f38cd6b94

Signatures

  • Detect Socks5Systemz Payload 3 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 FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.exe
    "C:\Users\Admin\AppData\Local\Temp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4900
    • C:\Users\Admin\AppData\Local\Temp\is-VD2EH.tmp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VD2EH.tmp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.tmp" /SL5="$40206,4745724,54272,C:\Users\Admin\AppData\Local\Temp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2612
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3556
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-VD2EH.tmp\e7b94b77e6d437223bf142aaf0fbeb2c37cdbd209364bb026ce528f2be2c0941.tmp

    Filesize

    680KB

    MD5

    bf530597367b891a3a6d5e2e1fcffb19

    SHA1

    718ada641ddb4179e033042339e09f46331c0a6b

    SHA256

    8e79a5b0e62fed326781ab7300a53f5ca0dd61b345adf957438cffd0dc9cf316

    SHA512

    8e28b4d7c9241d7d457eb1ec7e0aca92a49ae32df0a89688ab816bbf813f70bfd12138a2923f4cad0e116dec708b160c63816c1e711b168830cd96839041c129

  • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

    Filesize

    2.8MB

    MD5

    92e08351885c1ff60328cc3749b4fe41

    SHA1

    fc8a7001049f873d8947b7ebd47dca342cf87581

    SHA256

    13395bf8ae317a661015ba46814273f9274c3beb91d4bc73f6fe69e404ea474e

    SHA512

    97cdc712e1133550f82f3b888cfaf14a28817bb3402ae91fea960863c0ae219fa184fcc3e44923c72f60382d18fe145627db8dd1782724877c91c57cf6cfa8d4

  • memory/2612-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2612-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3556-63-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3556-59-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3556-60-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/3556-65-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-76-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-88-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/4564-69-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-120-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-117-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-72-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-75-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-113-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/4564-79-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-82-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-85-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-67-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-91-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-96-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-99-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-102-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-105-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-108-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-111-0x0000000000400000-0x00000000006C8000-memory.dmp

    Filesize

    2.8MB

  • memory/4564-112-0x0000000000A30000-0x0000000000AD2000-memory.dmp

    Filesize

    648KB

  • memory/4900-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4900-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4900-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB