Overview

overview

10

Static

static

fd3f386397...c9.exe

windows7_x64

10

fd3f386397...c9.exe

windows10_x64

10

Analysis

  • max time kernel
    141s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 07:44

Sharing

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General

  • Target

    fd3f386397ab9f626b2888e40a7998c9.exe

  • Size

    6.1MB

  • MD5

    fd3f386397ab9f626b2888e40a7998c9

  • SHA1

    a53c33779e705674531c5bf7af547e54107282f4

  • SHA256

    b735bf8a33209f968ae46a4f632bc07bff6ea83f66130934365b5be363657fd4

  • SHA512

    ce9f20694070d50ed1dee7dfd81b4a6428ad1129804f5ce41b4a0141be097795c197762363c8817041799177c057a9b654b63ea17e053eee65c4616d8858958e

Score
10/10
cobaltstrike305419896backdoortrojan

Malware Config

Extracted

Family

cobaltstrike

C2

http://103.72.4.166:8443/images/logo_max.png

Attributes
  • user_agent

    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Pragma: no-cache Cache-Control: no-cache User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36

Extracted

Family

cobaltstrike

Botnet

305419896

C2

http://103.72.4.166:8443/images/logo.png

Attributes
  • access_type

    512

  • beacon_type

    2048

  • host

    103.72.4.166,/images/logo.png

  • http_header1

    AAAACgAAAAtBY2NlcHQ6ICovKgAAAAcAAAAAAAAAAwAAAAEAAAAJWWVzQnlwYXNzAAAADwAAAAsAAAANAAAAAgAAABtodHRwczovL3d3dy5iYWlkdS5jb20vcz93ZD0AAAABAAAAHiZpc3NwPTEmdG49YmFpZHVob21lXyZpZT11dGYtOAAAAAYAAAAHUmVmZXJlcgAAAAoAAAAQUHJhZ21hOiBuby1jYWNoZQAAAAoAAAAXQ2FjaGUtQ29udHJvbDogbm8tY2FjaGUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • http_header2

    AAAACgAAAC9Db250ZW50LVR5cGU6IGFwcGxpY2F0aW9uL3gtd3d3LWZvcm0tdXJsZW5jb2RlZAAAAAoAAAAQUHJhZ21hOiBuby1jYWNoZQAAAAoAAAAXQ2FjaGUtQ29udHJvbDogbm8tY2FjaGUAAAAHAAAAAAAAAAMAAAAPAAAADQAAAAUAAAAGdGlja2V0AAAABwAAAAEAAAADAAAAAQAAAAhJbWJ5cGFzcwAAAA8AAAANAAAAAwAAAAIAAAAlX19FVkVOVFZBTElEQVRJT049QzJFOUFCJl9fVklFV1NUQVRFPQAAAAEAAAAKJnVzZXI9amFjawAAAAQAAAAAAA==

  • http_method1

    GET

  • http_method2

    POST

  • maxdns

    255

  • polling_time

    10000

  • port_number

    8443

  • sc_process32

    %windir%\syswow64\rundll32.exe

  • sc_process64

    %windir%\sysnative\rundll32.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCYHBQUUh9ez/ut26TEc5mMdd9JANu04+lF5gqDIJCV4uhT+KDwKkIGYCb6MEj4RCw/BKIdq2Imer2/RdSZOjop6khVxVOHRFn4x9crrd9XNMIYbipnacSLhdMMfsO9x1ZAQligc6mld/+SpSB2Z7UwRR9WgF/59HZAVqMtlG459QIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4.149856768e+09

  • unknown2

    AAAABAAAAAEAAAtfAAAAAgAACL0AAAANAAAAAwAAAAEAAAAKAAAADQAAAAsAAAAIAAAADwAAAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • uri

    /user/CheckLogin

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36

  • watermark

    305419896

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd3f386397ab9f626b2888e40a7998c9.exe
    "C:\Users\Admin\AppData\Local\Temp\fd3f386397ab9f626b2888e40a7998c9.exe"
    1⤵
      PID:4092

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4092-114-0x000002336F7E0000-0x000002336F7E1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4092-115-0x0000023376A10000-0x0000023376E10000-memory.dmp

      Filesize

      4.0MB

      Download

    • memory/4092-116-0x0000023376E10000-0x0000023376E5C000-memory.dmp

      Filesize

      304KB

      Download