Analysis

  • max time kernel
    92s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 09:27

General

  • Target
    2024-05-30_1acd56870bf13c5665a3fbb342ca4609_cobalt-strike_cobaltstrike.exe
  • Size 5.3MB
  • Sample240530-le54asea34
  • SHA256 a46b00e1154e4858261506b3dab1c194e5c39fde6b65439b40aa7c3f73b8cfab
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Cobalt Strike reflective loader 1 IoCs

    Detects the reflective loader used by Cobalt Strike.

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Detects Reflective DLL injection artifacts 1 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 8 IoCs
  • UPX dump on OEP (original entry point) 10 IoCs
  • XMRig Miner payload 10 IoCs
  • UPX packed file 10 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_1acd56870bf13c5665a3fbb342ca4609_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_1acd56870bf13c5665a3fbb342ca4609_cobalt-strike_cobaltstrike.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer start page
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:1436

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        MS.exe

        • Path C:\Windows\System32\MS.exe
        • Size 5.5MB
        • SHA256 b83c681431feac2daed0ae78a02a0e770652e75fda677ddbdc2ddc7cfdf5d9d4
        • MD5 SHA1 SHA512 SSDEEP

        memory/1436-4497-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-4502-0x00000000001C0000-0x00000000001D0000-memory.dmp

        memory/1436-744-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-1835-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-2405-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-3214-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-1-0x00000000001B0000-0x00000000001C0000-memory.dmp

        memory/1436-4279-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-4500-0x0000000000060000-0x0000000000062000-memory.dmp

        memory/1436-0-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-4504-0x00000000001E0000-0x00000000001F0000-memory.dmp

        memory/1436-4505-0x00000000001F0000-0x0000000000200000-memory.dmp

        memory/1436-4506-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-4507-0x0000000000401000-0x00000000010B5000-memory.dmp

        memory/1436-4508-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/1436-4509-0x0000000000401000-0x00000000010B5000-memory.dmp