Analysis

  • max time kernel
    148s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 08:24

General

  • Target

    2024-05-21_04ea36428f34a1b14107432694d4898a_cobalt-strike_cobaltstrike.exe

  • Size

    5.5MB

  • MD5

    04ea36428f34a1b14107432694d4898a

  • SHA1

    da85edba1d091d9901dd685784e57dfa1da561cf

  • SHA256

    c0c38cccb23c23f613fc87c4e5bbf1a887dc5ce4c1e0569bb13b355ffafd4aba

  • SHA512

    e3481e95c362ee8f4749c9b489911699b01404745dd45dcde23c9d3ed5aaa276f27e569400523fb5fbf0419ab2d00780d8f41d5a8b8435ead65853ce513917cc

  • SSDEEP

    98304:SW1qiPgxn+cuSuxx8Svt73qq36IdKtVxNw6pUkp3bkbRxoUR:53EnsxxDt73DdKrwapwbnR

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 7 IoCs
  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-21_04ea36428f34a1b14107432694d4898a_cobalt-strike_cobaltstrike.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_04ea36428f34a1b14107432694d4898a_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:3516

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Replication Through Removable Media

1
T1091

Defense Evasion

Modify Registry

2
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Lateral Movement

Replication Through Removable Media

1
T1091

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

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

    5.7MB

    MD5

    36662dedb76787f534c9e1ba21845ce0

    SHA1

    e47b3851a5e7c14daf10dfb1735e6af3568104ca

    SHA256

    119fb76f40dee36a7bd5038144945bff2d3da5ace37dc83200b4a6b15f054082

    SHA512

    62ef0b75242c7308c35b05ad79fabcbb952ccdba5d5d25e3d01ba12d74135ec0647fd5f66852de12292778dfb69f834bad3e1fdda85f6188caf5851cc8ac7dfa

  • memory/3516-2638-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-1-0x00000000001F0000-0x0000000000200000-memory.dmp
    Filesize

    64KB

  • memory/3516-609-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-1580-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-2105-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-0-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-3728-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-4354-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-4357-0x0000000000060000-0x0000000000062000-memory.dmp
    Filesize

    8KB

  • memory/3516-4360-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-4361-0x0000000000401000-0x00000000010B5000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-4362-0x0000000000400000-0x00000000010B6000-memory.dmp
    Filesize

    12.7MB

  • memory/3516-4363-0x0000000000401000-0x00000000010B5000-memory.dmp
    Filesize

    12.7MB