Analysis

  • max time kernel
    135s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    09-10-2024 01:14

General

  • Target

    962b8cb4bef3d875da5e5e3afdf845a293947162dc4c40466b7bed09c7982305.exe

  • Size

    20KB

  • MD5

    1cb71351313f803483081c2502c1f5ef

  • SHA1

    0191cec46fe163f580a128525660243c0557154b

  • SHA256

    962b8cb4bef3d875da5e5e3afdf845a293947162dc4c40466b7bed09c7982305

  • SHA512

    dda100e5d859fdd80603f1fc48088dcfd897a0ea4e845116e8d2ef0e094e0a7254a657264688c84f52ee9cd738267d13661e41953232ca0cf3fa6e3d49d2b75d

  • SSDEEP

    384:OIdmF+Ti213fEF9QZd/cBr5lholKKNW9j8MKy6Kli+9+b9eeOmZU+YG3l9PLR:OIsF81fG9QveThAxN+l3wb05mZQm

Malware Config

Extracted

Family

xtremerat

C2

kyfen200.no-ip.biz

kyfen.dyndns.biz

Signatures

  • Detect XtremeRAT payload 3 IoCs
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\962b8cb4bef3d875da5e5e3afdf845a293947162dc4c40466b7bed09c7982305.exe
    "C:\Users\Admin\AppData\Local\Temp\962b8cb4bef3d875da5e5e3afdf845a293947162dc4c40466b7bed09c7982305.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds policy Run key to start application
    • Boot or Logon Autostart Execution: Active Setup
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Windows\SysWOW64\explorer.exe
      explorer.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1552-0-0x0000000000C80000-0x0000000000C96000-memory.dmp

    Filesize

    88KB

  • memory/1552-10-0x0000000000C80000-0x0000000000C96000-memory.dmp

    Filesize

    88KB

  • memory/2904-9-0x0000000000C80000-0x0000000000C96000-memory.dmp

    Filesize

    88KB

  • memory/2904-7-0x0000000000C80000-0x0000000000C96000-memory.dmp

    Filesize

    88KB

  • memory/2904-12-0x0000000000C80000-0x0000000000C96000-memory.dmp

    Filesize

    88KB