Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 09:40

General

  • Target
    2024-05-30_ca965a1f586c5f688a9d1f362f344ffc_cobalt-strike_cobaltstrike.exe
  • Size 4.7MB
  • Sample240530-lnbwtaec46
  • SHA256 af2f99ecf4b2b0aab9aa67c86247c1a1bbd7ef7fbfabf85dbe335403da216ef3
  • 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.

  • Drops desktop.ini file(s) 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Drops autorun.inf file 1 TTPs 3 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Modifies Internet Explorer start page 1 TTPs 5 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_ca965a1f586c5f688a9d1f362f344ffc_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_ca965a1f586c5f688a9d1f362f344ffc_cobalt-strike_cobaltstrike.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops autorun.inf file
    • Drops file in Program Files directory
    • Modifies Internet Explorer start page
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:2644

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7-zip32.dll

        • Path C:\Program Files\7-Zip\7-zip32.dll
        • Size 5.0MB
        • SHA256 1d3b69359eb3942f441bbbad8bf3a73001b72a4a19d1e9f2040307dc803f6cc7
        • MD5 SHA1 SHA512 SSDEEP

        070E0202839D9D67350CD2613E78E416

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\070E0202839D9D67350CD2613E78E416
        • Size 1KB
        • SHA256 d73494e3446b02167573b3cde3ae1c8584ac26e15e45ac3ec0326708425d90fb
        • MD5 SHA1 SHA512

        77EC63BDA74BD0D0E0426DC8F8008506

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506
        • Size 70KB
        • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
        • MD5 SHA1 SHA512 SSDEEP

        070E0202839D9D67350CD2613E78E416

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\070E0202839D9D67350CD2613E78E416
        • Size 230B
        • SHA256 5da9b2538f22b27e38f21c581d19743d13b26caac1a0a6710447d276061194f1
        • MD5 SHA1 SHA512

        memory/2644-2513-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-5035-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-753-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-1898-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-0-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-3065-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-4097-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-1-0x00000000001E0000-0x00000000001F0000-memory.dmp

        memory/2644-5036-0x0000000000060000-0x0000000000062000-memory.dmp

        memory/2644-5041-0x00000000001F0000-0x0000000000200000-memory.dmp

        memory/2644-5042-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-5043-0x0000000000401000-0x00000000010B5000-memory.dmp

        memory/2644-5044-0x0000000000400000-0x00000000010B6000-memory.dmp

        memory/2644-5045-0x0000000000401000-0x00000000010B5000-memory.dmp