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Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 19:05

General

  • Target

    2024-05-29_cf40c54d65daaa6e2a46449b70facbdd_cobalt-strike_cobaltstrike.exe

  • Size

    5.0MB

  • MD5

    cf40c54d65daaa6e2a46449b70facbdd

  • SHA1

    0079078911651943cc00f2b29fc1cea8ecf26b4b

  • SHA256

    1a0143debf12deec42c507272f51498fc613b68cc800f6acbc96031861caee50

  • SHA512

    c87c30a1a048dd81bb2d693bd0ddf9cf44fba80d7a209f3292507a860b364d171b9e7a4400e67dd18bfe78559e6d45920f5e73a1e7a051d9264e94f21471d937

  • SSDEEP

    98304:SW1qiPgxn+cuSuxx8Svt73qq36IdKtVxNw6pUkp3bkbRxcUV:53EnsxxDt73DdKrwapwbzV

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 6 IoCs
  • Modifies system certificate store 2 TTPs 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-29_cf40c54d65daaa6e2a46449b70facbdd_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_cf40c54d65daaa6e2a46449b70facbdd_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:1404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    5.2MB

    MD5

    904f62a8a5b760f030ec7fad9ff7843e

    SHA1

    f57e1581dcc843799a59c369cfc884fe23857aac

    SHA256

    94bd77a9c578a552e69c66b4d84ae86a47b40dbacc789c94b60c5f47e4e3a713

    SHA512

    8b25f10e171692d13f0b4f01fc81cbe651073b1bf9dd93becc03c2710bb63f3ac34e05c6fd4f47b67487fced3f9161e0ee57ccb1beee5bd4328cccf63b72fda4

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

    Filesize

    1KB

    MD5

    55540a230bdab55187a841cfe1aa1545

    SHA1

    363e4734f757bdeb89868efe94907774a327695e

    SHA256

    d73494e3446b02167573b3cde3ae1c8584ac26e15e45ac3ec0326708425d90fb

    SHA512

    c899cb1d31d3214fd9dc8626a55e40580d3b2224bf34310c2abd85d0f63e2dedaeae57832f048c2f500cb2cbf83683fcb14139af3f0b5251606076cdb4689c54

  • memory/1404-4346-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-4698-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-813-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-2105-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-2760-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-3307-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-0-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-1-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/1404-4699-0x0000000000060000-0x0000000000062000-memory.dmp

    Filesize

    8KB

  • memory/1404-4704-0x00000000001F0000-0x0000000000200000-memory.dmp

    Filesize

    64KB

  • memory/1404-4705-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-4706-0x0000000000401000-0x00000000010B5000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-4707-0x0000000005B60000-0x0000000005B61000-memory.dmp

    Filesize

    4KB

  • memory/1404-4708-0x0000000000400000-0x00000000010B6000-memory.dmp

    Filesize

    12.7MB

  • memory/1404-4711-0x0000000000401000-0x00000000010B5000-memory.dmp

    Filesize

    12.7MB