Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-06-2024 19:14

General

  • Target

    ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.exe

  • Size

    5.1MB

  • MD5

    8f58f8249af23ca626ac65508568551b

  • SHA1

    af22d86d078c89055faebad0303275f1726505b4

  • SHA256

    ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242

  • SHA512

    7725193d72d0bb40e8603d4859792fb9efb74667cf4702592c95338659667db2362bfe778090aa4c3ef3bdaffd6220be3d9acb511a7144e2a617958056d1f345

  • SSDEEP

    98304:mcwsI1hGw7wudHcYwAcLzDTdh+PkBDY7ijzUdl5r4+ME783v2o6zwvYegcvppxNH:v6pBrEzHzPLsu+xkvYvcppH

Malware Config

Extracted

Family

socks5systemz

C2

dtsjxex.info

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.exe
    "C:\Users\Admin\AppData\Local\Temp\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Users\Admin\AppData\Local\Temp\is-KDRPC.tmp\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-KDRPC.tmp\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.tmp" /SL5="$501CE,5079536,54272,C:\Users\Admin\AppData\Local\Temp\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4648
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3948
      • C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
        "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:4388

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\is-GB08D.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-KDRPC.tmp\ff1d2878dc4c358df8e59c7c72790c96a09cdfca78b7646742cd9430908fb242.tmp

    Filesize

    680KB

    MD5

    849f967acbe0490ae11c6a70a6ffe6a0

    SHA1

    d3d2e9e9f80f7ca0b75eb79e884294c931171c5f

    SHA256

    45eb917ca974c2c3d5d1e24a24dd168b21b24a7476b3f39e16fb20d5737e1a97

    SHA512

    f2539e785d2068f6acda58146a93d5b4533642f35b496288e1ea5186a7a0391e6d4f9ace65a446c6656008cf1398d3820d3d2bc80b13182750bd3ab055dea7d1

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

    Filesize

    3.1MB

    MD5

    3c8a20326cbf995ded542fafe682c672

    SHA1

    9527cb7630c9dfb556034df533d0985e72728aa0

    SHA256

    d25421ccea99d03ea10ccb92a7bd9700d01609e000d407016d3ed101a1f81e3f

    SHA512

    72716c1cb08c09da22717254018117b6424d3c5feb87cba026adeb75201c1681783fea4e3c8842ebe29106e6e86fcea1baf035db02dfa9e3095c7f49cc79e81f

  • memory/3948-60-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/3948-63-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/3948-64-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/3948-59-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-69-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-94-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-112-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-109-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-106-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-103-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-72-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-75-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-78-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-81-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-84-0x0000000000A50000-0x0000000000AF2000-memory.dmp

    Filesize

    648KB

  • memory/4388-86-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-91-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-100-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4388-97-0x0000000000400000-0x0000000000729000-memory.dmp

    Filesize

    3.2MB

  • memory/4648-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4648-68-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4920-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4920-67-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4920-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB