Analysis

  • max time kernel
    115s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    10/11/2020, 07:28

General

  • Target
    241ef6bcf617456f45f2a71f8a648b118b1c833f4f126f540081f7e446b4dc20.exe
  • Size 5.9MB
  • Sample201110-lqd1emns2a
  • SHA256 241ef6bcf617456f45f2a71f8a648b118b1c833f4f126f540081f7e446b4dc20
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Cobalt Strike reflective loader 15 IoCs

    Detects the reflective loader used by Cobalt Strike.

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Executes dropped EXE 7 IoCs
  • UPX packed file 15 IoCs

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

  • Loads dropped DLL 8 IoCs
  • JavaScript code in executable 15 IoCs
  • Drops file in Windows directory 8 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\241ef6bcf617456f45f2a71f8a648b118b1c833f4f126f540081f7e446b4dc20.exe
    "C:\Users\Admin\AppData\Local\Temp\241ef6bcf617456f45f2a71f8a648b118b1c833f4f126f540081f7e446b4dc20.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\System\NQsFgAA.exe
      C:\Windows\System\NQsFgAA.exe
      2⤵
      • Executes dropped EXE
      PID:1424
    • C:\Windows\System\yzMQQJn.exe
      C:\Windows\System\yzMQQJn.exe
      2⤵
      • Executes dropped EXE
      PID:1564
    • C:\Windows\System\DoUvGnC.exe
      C:\Windows\System\DoUvGnC.exe
      2⤵
      • Executes dropped EXE
      PID:1984
    • C:\Windows\System\VpXMsdu.exe
      C:\Windows\System\VpXMsdu.exe
      2⤵
      • Executes dropped EXE
      PID:1968
    • C:\Windows\System\LDwRPez.exe
      C:\Windows\System\LDwRPez.exe
      2⤵
      • Executes dropped EXE
      PID:1956
    • C:\Windows\System\BAgASEl.exe
      C:\Windows\System\BAgASEl.exe
      2⤵
      • Executes dropped EXE
      PID:1632
    • C:\Windows\System\ioftWMK.exe
      C:\Windows\System\ioftWMK.exe
      2⤵
      • Executes dropped EXE
      PID:920
    • C:\Windows\System\EJDKcMc.exe
      C:\Windows\System\EJDKcMc.exe
      2⤵
        PID:360

    Network

          MITRE ATT&CK Matrix

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          Downloads