Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    19/02/2021, 12:47

General

  • Target
    CorpReport.exe
  • Size 152KB
  • Sample210219-jaha71vx56
  • SHA256 cb01f31a322572035cf19f6cda00bcf1d8235dcc692588810405d0fc6e8d239c
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • cobaltstrike

Version
  • windows/download_exec

C2
  • http://hdhuge.com:443/files/remove.gif

Extracted

Family
  • cobaltstrike

C2
  • http://hdhuge.com:443/skin

Attributes
  • access_type

    512

  • beacon_type

    2048

  • create_remote_thread

    0

  • day

    0

  • dns_idle

    0

  • dns_sleep

    0

  • host

    hdhuge.com,/skin

  • http_header1

    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

  • http_header2

    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

  • http_method1

    GET

  • http_method2

    POST

  • injection_process

  • jitter

    11008

  • maxdns

    0

  • month

    0

  • pipe_name

  • polling_time

    5000

  • port_number

    443

  • proxy_password

  • proxy_server

  • proxy_username

  • sc_process32

    %windir%\syswow64\mstsc.exe

  • sc_process64

    %windir%\sysnative\mstsc.exe

  • state_machine

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCNK8frJ1haBlBHXf5ZoAfTQhaHXWmL8zJpSeyt9ar/LqMsQIRjKb/r6LqJhm7WgR4Jnd3KVCOyU40qDzjVLmvC1zu8zRP4J8CzfkLOOfntB4kjWqpWCRFuBAZHTCwy8uRMzVDpF/JUIo+/wS1wRo8UJj3emDneu/5ZCjDKhHnRAQIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    5.10860288e+08

  • unknown2

    AAAABAAAAAIAAAFSAAAAAwAAAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown3

    0

  • unknown4

    0

  • unknown5

    2.256023134e+09

  • uri

    /ba

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246

  • year

    0

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Modifies system certificate store 2 TTPs 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CorpReport.exe
    "C:\Users\Admin\AppData\Local\Temp\CorpReport.exe"
    1⤵
    • Modifies system certificate store
    PID:880

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/880-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

        memory/880-3-0x0000000003080000-0x0000000003480000-memory.dmp