Analysis

  • max time kernel
    144s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/08/2024, 02:22

General

  • Target
    c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.exe
  • Size 4.0MB
  • Sample240802-ctmqtsvena
  • SHA256 c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66
  • MD5 SHA1 SHA512 SSDEEP

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.

  • 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.exe
    "C:\Users\Admin\AppData\Local\Temp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4664
    • C:\Users\Admin\AppData\Local\Temp\is-UVNR1.tmp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-UVNR1.tmp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.tmp" /SL5="$8015A,3900175,54272,C:\Users\Admin\AppData\Local\Temp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.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:1344
      • C:\Users\Admin\AppData\Local\Quality MP3 Modifier\qualitymp3modifier.exe
        "C:\Users\Admin\AppData\Local\Quality MP3 Modifier\qualitymp3modifier.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1456
      • C:\Users\Admin\AppData\Local\Quality MP3 Modifier\qualitymp3modifier.exe
        "C:\Users\Admin\AppData\Local\Quality MP3 Modifier\qualitymp3modifier.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:556

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        qualitymp3modifier.exe

        • Path C:\Users\Admin\AppData\Local\Quality MP3 Modifier\qualitymp3modifier.exe
        • Size 4.3MB
        • SHA256 0de27784f5b3ca73b0a4cb557bfb5ce2e32c42de4fc1af17052d2b13b33505e9
        • MD5 SHA1 SHA512 SSDEEP

        _iscrypt.dll

        • Path C:\Users\Admin\AppData\Local\Temp\is-978DL.tmp\_isetup\_iscrypt.dll
        • Size 2KB
        • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
        • MD5 SHA1 SHA512

        c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-UVNR1.tmp\c6a5bd9c495601c0eb0e5bb482a571389e0d56f0f5abaccefa7c609423fa9d66.tmp
        • Size 692KB
        • SHA256 9a218bf867e7a5244c554054cf5c56dcdd637c4c14ce4db897c2735b308bda60
        • MD5 SHA1 SHA512 SSDEEP

        memory/556-86-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-70-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-110-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-107-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-103-0x0000000000B00000-0x0000000000BA2000-memory.dmp

        memory/556-102-0x0000000000B00000-0x0000000000BA2000-memory.dmp

        memory/556-101-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-60-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-98-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-95-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-63-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-66-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-67-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-92-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-73-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-76-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-79-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/556-80-0x0000000000B00000-0x0000000000BA2000-memory.dmp

        memory/556-89-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/1344-12-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/1344-62-0x0000000000400000-0x00000000004BD000-memory.dmp

        memory/1456-56-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/1456-57-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/1456-53-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/1456-52-0x0000000000400000-0x000000000084E000-memory.dmp

        memory/4664-0-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4664-61-0x0000000000400000-0x0000000000414000-memory.dmp

        memory/4664-2-0x0000000000401000-0x000000000040B000-memory.dmp