Overview

overview

10

Static

static

3

0bef53b88c...b6.exe

windows7-x64

7

0bef53b88c...b6.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/09/2023, 03:30

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General

  • Target
    0bef53b88c4f8bf2481c1580556e45735b46de63bda268ee579728638d7e2ab6.exe
  • Size 8.2MB
  • Sample230920-d2ntjafh92
  • SHA256 0bef53b88c4f8bf2481c1580556e45735b46de63bda268ee579728638d7e2ab6
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
cobaltstrike1backdoortrojan

Malware Config

Extracted

Family

  • cobaltstrike

Botnet

  • 1

C2

  • http://142.93.77.61:443/fwlink

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    142.93.77.61,/fwlink

  • http_header1

    AAAABwAAAAAAAAADAAAABgAAAAZDb29raWUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAACZDb250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL29jdGV0LXN0cmVhbQAAAAcAAAAAAAAABQAAAAJpZAAAAAcAAAABAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • maxdns

    255

  • polling_time

    60000

  • port_number

    443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCmvsAeKxSgXApnTJfpxsXXIefGGdh28phbk3wEsA5TxlX687DiQ2jDzFPkjcHMTcP65msxcDrEkfgWdX9rGlMEorUwv8ewAMN2Tg5fvhKwXh9YbJVbx6n+jLcUdTAXk/SG7TA5ozu35nPMoSlHRFidSSgXbSo5RKqi/dsFAYB86wIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4096

  • unknown2

    AAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /submit.php

  • user_agent

    Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)

  • watermark

    1

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • Executes dropped EXE 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0bef53b88c4f8bf2481c1580556e45735b46de63bda268ee579728638d7e2ab6.exe
    "C:\Users\Admin\AppData\Local\Temp\0bef53b88c4f8bf2481c1580556e45735b46de63bda268ee579728638d7e2ab6.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Users\Admin\AppData\Local\Temp\go-memexec-2322140372.exe
      C:\Users\Admin\AppData\Local\Temp\go-memexec-2322140372.exe
      2⤵
      • Executes dropped EXE
      PID:1876

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        go-memexec-2322140372.exe
        • Path C:\Users\Admin\AppData\Local\Temp\go-memexec-2322140372.exe
        • Size 2.9MB
        • SHA256 138bf881d2632d83eae369bd56937fdf68d0f5292603aabd3120ed7447f5d887
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        go-memexec-2322140372.exe
        • Path C:\Users\Admin\AppData\Local\Temp\go-memexec-2322140372.exe
        • Size 2.9MB
        • SHA256 138bf881d2632d83eae369bd56937fdf68d0f5292603aabd3120ed7447f5d887
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/1876-4-0x0000000000400000-0x0000000000453000-memory.dmp
        Download

        memory/1876-5-0x0000012C083B0000-0x0000012C083F1000-memory.dmp
        Download

        memory/1876-6-0x0000000000400000-0x0000000000453000-memory.dmp
        Download

        memory/1876-7-0x0000012C08760000-0x0000012C087B3000-memory.dmp
        Download

        memory/1876-8-0x00007FF67CE60000-0x00007FF67D13E000-memory.dmp
        Download

        memory/1876-9-0x0000012C08760000-0x0000012C087B3000-memory.dmp
        Download