Analysis

  • max time kernel
    292s
  • max time network
    258s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    27/06/2024, 22:31

General

  • Target
    06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.exe
  • Size 5.4MB
  • Sample240627-2ftpnaxdnj
  • SHA256 06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • socks5systemz

C2
  • bgchiey.com

  • http://bgchiey.com/search/?q=67e28dd86c0ca77c400cfe4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff614c2e8909d33

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.exe
    "C:\Users\Admin\AppData\Local\Temp\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4268
    • C:\Users\Admin\AppData\Local\Temp\is-O3JND.tmp\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-O3JND.tmp\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.tmp" /SL5="$70210,5411959,54272,C:\Users\Admin\AppData\Local\Temp\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4932
      • C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe
        "C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe" -i
        3⤵
        • Executes dropped EXE
        PID:96
      • C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe
        "C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2208

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        soundrecorder32_64.exe

        • Path C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe
        • Size 2.8MB
        • SHA256 448ea185d103010553a03f64fff1a6307365e4f69d12b3a77439dcddb1028cfb
        • MD5 SHA1 SHA512 SSDEEP

        06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-O3JND.tmp\06d199a8d787804af9649e0ceda8f1fd44bbabc24275574071deefe62b64f3e6.tmp
        • Size 680KB
        • SHA256 643b4d19c1dc904825fd4cd35c72303927f3981bc27d19af06e70d9842411d8f
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

        • Path \Users\Admin\AppData\Local\Temp\is-32O26.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        _isdecmp.dll

        • Path \Users\Admin\AppData\Local\Temp\is-32O26.tmp\_isetup\_isdecmp.dll
        • Size 13KB
        • SHA256 e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
        • MD5 SHA1 SHA512 SSDEEP

        memory/96-65-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/96-69-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/96-66-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-86-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-99-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-135-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-130-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-127-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-74-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-77-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-80-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-83-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-124-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-89-0x0000000000990000-0x0000000000A32000-memory.dmp

        memory/2208-91-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-96-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-121-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-102-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-105-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-108-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-111-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-115-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/2208-118-0x0000000000400000-0x00000000006D4000-memory.dmp

        memory/4268-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4268-72-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4268-2-0x0000000000401000-0x000000000040B000-memory.dmp

        memory/4932-19-0x0000000000400000-0x00000000004BA000-memory.dmp

        memory/4932-73-0x0000000000400000-0x00000000004BA000-memory.dmp