Overview

overview

10

Static

static

1

bc74b5b8a6...70.dll

windows7-x64

10

bc74b5b8a6...70.dll

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/03/2023, 14:33

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General

  • Target
    bc74b5b8a64345852af7d6d693558529f4aaaca0d9547aa57279b1cbe998ab70.dll
  • Size 150KB
  • Sample230321-rw3bmadb4s
  • SHA256 bc74b5b8a64345852af7d6d693558529f4aaaca0d9547aa57279b1cbe998ab70
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
cobaltstrikebackdoortrojan

Malware Config

Extracted

Family

  • cobaltstrike

C2

  • http://nemucefah.com:443/wp-includes/skin.mp3

Attributes
  • user_agent

    Host: google.co.jp Connection: close User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

    trojanbackdoorcobaltstrike
  • Program crash 1 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bc74b5b8a64345852af7d6d693558529f4aaaca0d9547aa57279b1cbe998ab70.dll
    1⤵
      PID:2228
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2228 -s 1236
        2⤵
        • Program crash
        PID:2880
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 432 -p 2228 -ip 2228
      1⤵
        PID:384

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/2228-133-0x00000000006A0000-0x00000000006A8000-memory.dmp
            Download