Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25/02/2021, 14:08

General

  • Target
    CustomerStatement.exe
  • Size 595KB
  • Sample210225-gzmtcl448s
  • SHA256 dbafbe9edfdac67a781756a6970a7341fd5401b0914fff7e3e8136cff0426fc5
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • cobaltstrike

Version
  • windows/download_exec

C2
  • http://redwelt.com:443/files/links.gif

Extracted

Family
  • cobaltstrike

C2
  • http://redwelt.com:443/eso.js

Attributes
  • access_type

    512

  • beacon_type

    2048

  • create_remote_thread

    0

  • day

    0

  • dns_idle

    0

  • dns_sleep

    0

  • host

    redwelt.com,/eso.js

  • http_header1

    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

  • http_header2

    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

  • http_method1

    GET

  • http_method2

    POST

  • injection_process

  • jitter

    2048

  • 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

    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCZU6EkkcUA1x4nkMMpV8QSWi8OreQbl2NCmIIh+Hiyh6rrDaIZUqqUY1TGdlGU+44tOpuOxkGotIkQl3QOE+O0RcVd863WTN8gt/9SfGG4SNVDE9w2ewYFpfE71tXkaS7MMp7+4yK/RbJ36UkaYxPkoC/riLCwasoBElZTk9/EmwIDAQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown1

    4.9795328e+08

  • unknown2

    AAAABAAAAAIAAANxAAAAAwAAAAsAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

  • unknown3

    0

  • unknown4

    0

  • unknown5

    2.256023134e+09

  • uri

    /af

  • user_agent

    Mozilla/5.0 (Linux; Android 7.0; Pixel C Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0

  • year

    0

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CustomerStatement.exe
    "C:\Users\Admin\AppData\Local\Temp\CustomerStatement.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:580

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/580-2-0x00000000004D0000-0x00000000004D1000-memory.dmp

        memory/580-3-0x00000000047B0000-0x0000000004BB0000-memory.dmp