Analysis

  • max time kernel
    136s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2024, 04:19

General

  • Target
    b67d52bf30515f2537b0a3a076ee60dd.exe
  • Size 2.0MB
  • Sample240306-exj58aah41
  • SHA256 6bbabed7b0f11e304b0cb97013c9095d51fa330aee3a966b5626088e92a0dfeb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cobaltstrike

C2
  • http://47.100.48.157:8787/jquery-3.3.2.slim.min.js

Attributes
  • user_agent

    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Referer: http://code.jquery.com/ Accept-Encoding: gzip, deflate User-Agent: Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b67d52bf30515f2537b0a3a076ee60dd.exe
    "C:\Users\Admin\AppData\Local\Temp\b67d52bf30515f2537b0a3a076ee60dd.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Windows\System32\cmd.exe
      C:\Windows\System32\cmd.exe /c "start 7月网格自主发展情况通报0725.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\7月网格自主发展情况通报0725.txt
        3⤵
          PID:2644

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7月网格自主发展情况通报0725.txt

          • Path C:\Users\Admin\AppData\Local\Temp\7月网格自主发展情况通报0725.txt
          • Size 442B
          • SHA256 cd83d993a216b269a62c3678394b8500162c259a35d36b4000ea165028080c43
          • MD5 SHA1 SHA512

          memory/2240-24-0x0000000002AE0000-0x0000000002AE1000-memory.dmp