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Analysis

  • max time kernel
    141s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 21:26

General

  • Target

    2024-05-29_29f47bf215201447a919a7502f3ed630_cobalt-strike_cobaltstrike.exe

  • Size

    5.3MB

  • MD5

    29f47bf215201447a919a7502f3ed630

  • SHA1

    f116d03c3e901fc2e2eb6fdf6398de0b5cdc7c2b

  • SHA256

    f1183d0388969ff33fffa0a6ba57e095dc50cbc6fdb57418e50a8d4f61df9102

  • SHA512

    4af8d913630a8dabbe13c7c9a0bb8499cc46bcb76f2bd2c57892b32c31a9095bb0c0819b0a1bb07fe3ab6aa88b4be9106b25cd3b2bad770f075e6904b076d8d0

  • SSDEEP

    98304:SW1qiPgxn+cuSuxx8Svt73qq36IdKtVxNw6pUkp3bkbRxRUh:53EnsxxDt73DdKrwapwbuh

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 6 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 3 IoCs
  • Modifies system certificate store 2 TTPs 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-29_29f47bf215201447a919a7502f3ed630_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_29f47bf215201447a919a7502f3ed630_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:4728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\7-Zip\7-zip32.dll

    Filesize

    5.5MB

    MD5

    1aee689390c0904fd55016065e9e2e47

    SHA1

    5cfe5199763775081e2ff6905d521e52e18c34ac

    SHA256

    a1f958837af9cd012db93bf7a70be9cc0f9da181eaa288c4efe592cf13554de6

    SHA512

    67e0cae708dcfae2fda8826c143f25fa1d099468f616a2abcc2d5f6e65a06db5f2b5bda822293d1480828f1d725235c52bb493e53eeea479f93ff97ea564b3cb

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\070E0202839D9D67350CD2613E78E416

    Filesize

    1KB

    MD5

    55540a230bdab55187a841cfe1aa1545

    SHA1

    363e4734f757bdeb89868efe94907774a327695e

    SHA256

    d73494e3446b02167573b3cde3ae1c8584ac26e15e45ac3ec0326708425d90fb

    SHA512

    c899cb1d31d3214fd9dc8626a55e40580d3b2224bf34310c2abd85d0f63e2dedaeae57832f048c2f500cb2cbf83683fcb14139af3f0b5251606076cdb4689c54

  • memory/4728-3311-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-4226-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-515-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-1374-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-1883-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-2423-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-0-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-1-0x00000000001B0000-0x00000000001C0000-memory.dmp

    Filesize

    64KB

  • memory/4728-4429-0x0000000000060000-0x0000000000062000-memory.dmp

    Filesize

    8KB

  • memory/4728-4432-0x00000000001D0000-0x00000000001F2000-memory.dmp

    Filesize

    136KB

  • memory/4728-4433-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-4434-0x0000000000401000-0x00000000010B5000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-4436-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/4728-4437-0x0000000000401000-0x00000000010B5000-memory.dmp

    Filesize

    12.7MB