Analysis

  • max time kernel
    143s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2024 11:31

General

  • Target

    3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe

  • Size

    4.8MB

  • MD5

    55e48883961e3231eeda6a3ac32b15c1

  • SHA1

    f079dfa9ac2ef341c70aa3638457f17ab4e14558

  • SHA256

    3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd

  • SHA512

    1fb2a42b43a37f361110d9e205012c00464511b5f2f6f0749ef8192655e03ed37c3abbcc81a25d2ebcc6c6f667f48b4a9d7f884d0220589492dc5753ff6b71e4

  • SSDEEP

    98304:mxpNOQu62zLF/FMLpnrYuCVt1H71k3nUhe9FZSCGq9Z4BGSmdWtoOg:Cxu9/OLpr/AtF1+Uh8LSjq71Kor

Malware Config

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\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe
    "C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp" /SL5="$A01D0,4739961,54272,C:\Users\Admin\AppData\Local\Temp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1236
      • C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe
        "C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\5K Player\5kplayer.exe

    Filesize

    3.0MB

    MD5

    1faa384f13689b6fdebba8b00028e9cf

    SHA1

    4aea8811b1e3fa6b2384db40254718ff859cf1e7

    SHA256

    a182532a8b163d3633745eb9ac2a721a38650bea77a00c56703cee8bb76a8ff4

    SHA512

    35819ccdf434ef123a0c12bbb22cba88a1d9a47bc8124fff790a8cc66abbbfe1f1b08e0d1f12afbfa5f44b68f5e079d50a05ef7fe54fe81629efadf210300f6f

  • C:\Users\Admin\AppData\Local\Temp\is-0ILJO.tmp\3a73812658d728653d04f0c5d49e028b38e0c1015db4d5084e70abde63bd71dd.tmp

    Filesize

    680KB

    MD5

    2147d68d1e5f1da63ca70612f4181ce6

    SHA1

    517ecefc93c258b1bc05ee5433e3a328a6f9168a

    SHA256

    3ba1867d2ba6b3db3c6c4c5fa238246fd4351f337c4e167e97eb25e2a5f0b181

    SHA512

    bc4a5e0a2e83e39005b6e3d470681741435a7b06f182162c3a72a96b0f763cb5a80eaad7e936216ac21c00d00b07e429149f0d4e1869868b6e469b1427ed8188

  • C:\Users\Admin\AppData\Local\Temp\is-CHU6P.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/1236-65-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/1236-60-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/1236-63-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/1236-59-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-74-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-87-0x0000000000930000-0x00000000009D2000-memory.dmp

    Filesize

    648KB

  • memory/3652-119-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-116-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-111-0x0000000000930000-0x00000000009D2000-memory.dmp

    Filesize

    648KB

  • memory/3652-112-0x0000000000930000-0x00000000009D2000-memory.dmp

    Filesize

    648KB

  • memory/3652-71-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-110-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-77-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-80-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-83-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-68-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-88-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-94-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-97-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-98-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-101-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-104-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/3652-107-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4432-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4432-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4656-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4656-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/4656-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB