Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-09-2024 12:11

General

  • Target

    CRYPTSP.dll

  • Size

    282KB

  • MD5

    9969eec1d2e99a6535f5fc62b2acc78e

  • SHA1

    212b0d900473ff811bd6d4f1dbd2a2f732574763

  • SHA256

    27a1a83fc410bb51c4fa943de18fc93f1081a5703941808e01a12ef176735c4e

  • SHA512

    9ea50296718ebccc4a9bfcc2fce61e47b74c00febf4f50dd159c4852fbdf4a2fa06cd0fdbdfde653078c4763b8b4917b43499aa671dd2b2ca30029f8c3abeb14

  • SSDEEP

    6144:e5yKlTiyDU15/TKvqXNBfPmLno+bG+4ohEzP+59:e5ni7//+6feLTGroiK9

Malware Config

Extracted

Family

cobaltstrike

C2

http://service-61oc67uo-1327454768.gz.tencentapigw.com.cn:443/Content/js/cookie/jquery.cookie.js

Attributes
  • user_agent

    User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; WOW64; Trident/5.0)

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\CRYPTSP.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3272
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c calc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3140
      • C:\Windows\system32\calc.exe
        calc
        3⤵
        • Modifies registry class
        PID:4292
    • C:\Windows\SysTem32\notepad.exe
      C:\Windows\SysTem32\notepad.exe
      2⤵
        PID:4564
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:4936

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4564-0-0x000002579DAD0000-0x000002579DAD1000-memory.dmp

      Filesize

      4KB