Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13-03-2024 21:27

General

  • Target

    c6e61e1c71ffe0bfada815f3bbd030c2.exe

  • Size

    224KB

  • MD5

    c6e61e1c71ffe0bfada815f3bbd030c2

  • SHA1

    b6062e39f90190afc49f9263c3d6c142463ba4b8

  • SHA256

    f107b5194dd52d81cdc4db22937344db1d77658a106095708563d9b7a250b724

  • SHA512

    5dc097d3c503a3a499623b133c7f485f4f493122cb72d0ca20f6a83a83537203de9932efb34c22fb2fc9869b1857468d6d6451d42feada9d5256aa925897333a

  • SSDEEP

    6144:PJtDhxzkeP0G5xSeZWqpJzI3e3OT9uiGKrQ:PJtDPzkiL5xSeZJpue3uuiG5

Malware Config

Extracted

Family

xtremerat

C2

kita2011.zapto.org

Ÿ杋效愨摈kita2011.zapto.org

kita2011.dyndns-ip.com

Signatures

  • Detect XtremeRAT payload 11 IoCs
  • XtremeRAT

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

  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6e61e1c71ffe0bfada815f3bbd030c2.exe
    "C:\Users\Admin\AppData\Local\Temp\c6e61e1c71ffe0bfada815f3bbd030c2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1796
    • C:\Users\Admin\AppData\Local\Temp\c6e61e1c71ffe0bfada815f3bbd030c2.exe
      "C:\Users\Admin\AppData\Local\Temp\c6e61e1c71ffe0bfada815f3bbd030c2.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        PID:1120
      • C:\Windows\SysWOW64\notepad.exe
        notepad.exe
        3⤵
        • Modifies Installed Components in the registry
        • Deletes itself
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\InstallDir\Server.exe

    Filesize

    224KB

    MD5

    c6e61e1c71ffe0bfada815f3bbd030c2

    SHA1

    b6062e39f90190afc49f9263c3d6c142463ba4b8

    SHA256

    f107b5194dd52d81cdc4db22937344db1d77658a106095708563d9b7a250b724

    SHA512

    5dc097d3c503a3a499623b133c7f485f4f493122cb72d0ca20f6a83a83537203de9932efb34c22fb2fc9869b1857468d6d6451d42feada9d5256aa925897333a

  • memory/1120-9-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1120-22-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1796-4-0x0000000002880000-0x00000000029EC000-memory.dmp

    Filesize

    1.4MB

  • memory/1796-1-0x0000000000400000-0x000000000056C000-memory.dmp

    Filesize

    1.4MB

  • memory/1796-6-0x0000000000400000-0x000000000056C000-memory.dmp

    Filesize

    1.4MB

  • memory/1924-15-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1924-5-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1924-7-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1924-8-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/1924-3-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/2776-14-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/2776-18-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/2776-19-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/2776-20-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB

  • memory/2776-23-0x0000000010000000-0x000000001004A000-memory.dmp

    Filesize

    296KB