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Analysis

  • max time kernel
    30s
  • max time network
    34s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/10/2024, 17:45

General

  • Target

    winmm.dll

  • Size

    841KB

  • MD5

    d6a8c7fd490cd1149c0b51d961eab9f3

  • SHA1

    73bb1220ead897fcc36df8d8622104ae82a9ad12

  • SHA256

    119f71276feb0064a7382ae036cc9a7ef9a2cdef69f8b4ca65a0e0ce4643245a

  • SHA512

    0273f74c072f48a3aaac1c6e808fcdcab465513651c5a7815fc75e767af85cd1654073f776a5f41ad2d9606264302333d4524cbe838dacfeae1e1d7ff413befc

  • SSDEEP

    6144:oUCLuxLYxYooT5WjKkwxPQm9msflBOkV4ELEko/q+EIZtCn6Kyn3KzhJTTcAcYGR:TCv/o9rk8597u/PHvLKkAS84RQ8MoJ

Malware Config

Extracted

Family

legion

C2

dns-beast.com

Attributes
  • url_paths

    hittest.php

  • user_agent

    Mozilla/5.0 (Windows NT 6.3; Trident/7.0; Touch; rv:11.0) like Gecko

Signatures

  • Legion, RobotDropper, Satacom

    Legion aka 'RobotDropper' or 'Satacom' is a malware downloader written in C++ and Legion stealer is written C#.

  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\winmm.dll,#1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1592-1-0x000002B3E07F0000-0x000002B3E08F0000-memory.dmp

    Filesize

    1024KB

  • memory/1652-2-0x0000000000C60000-0x0000000000C87000-memory.dmp

    Filesize

    156KB

  • memory/1652-3-0x0000000000C60000-0x0000000000C87000-memory.dmp

    Filesize

    156KB

  • memory/1652-4-0x0000000000C60000-0x0000000000C87000-memory.dmp

    Filesize

    156KB

  • memory/1652-5-0x0000000000C60000-0x0000000000C87000-memory.dmp

    Filesize

    156KB

  • memory/1652-8-0x0000000000C60000-0x0000000000C87000-memory.dmp

    Filesize

    156KB