Overview

overview

10

Static

static

10

cobaltstri...de.exe

windows10-2004-x64

10

cobaltstri...de.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/05/2026, 17:07

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General

  • Target
    cobaltstrike_shellcode.exe
  • Size 219KB
  • Sample260520-vm73ashw5w
  • SHA256 1ae532cc0fa2e16cac4f23e289741e256cf517afbbb536aeeb0d7cd601bc05a1
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoor305419896discoverycobaltstriketrojan

Malware Config

Extracted

Family

  • cobaltstrike

Botnet

  • 305419896

C2

  • http://47.91.237.42:8443/__utm.gif

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    47.91.237.42,/__utm.gif

  • http_header1

    AAAABwAAAAAAAAADAAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAACZDb250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL29jdGV0LXN0cmVhbQAAAAcAAAAAAAAABQAAAAJpZAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • maxdns

    255

  • polling_time

    60000

  • port_number

    8443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDS7zRQv7EhhTkbgDrCNBsNay7lzQFmcC/GWwjOq93nKwPSszjIKgtW8nwhtoRhr6MFZx4DSYFdeuJDrtJNcTZz2C/LgZzhSQJmhiEqCkVqPPCfK1C6S4PzDrzy9L794rPLOuoewlGAXgiH5/Ae2aC5k2wedRNfes3DJZDDCaJJYwIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /submit.php

  • user_agent

    Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Trident/4.0)

  • watermark

    305419896

Signatures

  • Family: Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • 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.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\cobaltstrike_shellcode.exe
    "C:\Users\Admin\AppData\Local\Temp\cobaltstrike_shellcode.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:3208

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/3208-0-0x0000000000400000-0x000000000043C4F0-memory.dmp
        Download

        memory/3208-1-0x0000000000880000-0x00000000008BD000-memory.dmp
        Download

        memory/3208-2-0x0000000000400000-0x000000000043C4F0-memory.dmp
        Download

        memory/3208-3-0x0000000000880000-0x00000000008BD000-memory.dmp
        Download