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Analysis

  • max time kernel
    93s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 15:17

General

  • Target

    Sleettz Virtualization.exe

  • Size

    2.0MB

  • MD5

    393a0f8a3bacd8ade71d1874fde3568e

  • SHA1

    9a56d4def655c0805714b32198000d0b177694da

  • SHA256

    85a8d0cee047255ca84d6f48058a553a783745b13196151c5dc34ade36599a0e

  • SHA512

    672ded8eaa8f1857c55b6cf6cdae1977c01a7538217fb3aecdc2f1339e94e2882495408772b6c935755c38165520c66850240f1302ba12d005945d8e354d48cb

  • SSDEEP

    49152:X1/wXVtR1NNZHNNNNNNNXv2N8FR1NNZHNNNNNNNXv2N8lITYbNbNWo4kSH3OqtwE:lwFtR1NNZHNNNNNNNXv2N8FR1NNZHNNQ

Malware Config

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Sleettz Virtualization.exe
    "C:\Users\Admin\AppData\Local\Temp\Sleettz Virtualization.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c start cmd /C "color b && title Error && echo You must run the function KeyAuthApp.init(); first && timeout /t 5"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3060
      • C:\Windows\SysWOW64\cmd.exe
        cmd /C "color b && title Error && echo You must run the function KeyAuthApp.init(); first && timeout /t 5"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4468
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/544-0-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

    Filesize

    4KB

  • memory/544-1-0x0000000000320000-0x0000000000532000-memory.dmp

    Filesize

    2.1MB

  • memory/544-2-0x0000000005470000-0x0000000005A14000-memory.dmp

    Filesize

    5.6MB

  • memory/544-3-0x0000000004F60000-0x0000000004FF2000-memory.dmp

    Filesize

    584KB

  • memory/544-4-0x0000000005000000-0x0000000005066000-memory.dmp

    Filesize

    408KB

  • memory/544-5-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/544-6-0x0000000005E80000-0x0000000005E92000-memory.dmp

    Filesize

    72KB

  • memory/544-7-0x0000000005EF0000-0x0000000005EFA000-memory.dmp

    Filesize

    40KB

  • memory/544-8-0x0000000006440000-0x0000000006654000-memory.dmp

    Filesize

    2.1MB

  • memory/544-9-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB

  • memory/544-10-0x00000000090B0000-0x0000000009162000-memory.dmp

    Filesize

    712KB

  • memory/544-11-0x00000000091C0000-0x00000000091E2000-memory.dmp

    Filesize

    136KB

  • memory/544-12-0x00000000091F0000-0x0000000009544000-memory.dmp

    Filesize

    3.3MB

  • memory/544-14-0x00000000095B0000-0x00000000095EC000-memory.dmp

    Filesize

    240KB

  • memory/544-16-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

    Filesize

    4KB

  • memory/544-19-0x0000000074E40000-0x00000000755F0000-memory.dmp

    Filesize

    7.7MB