Analysis

  • max time kernel
    149s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    05/08/2023, 13:32

General

  • Target

    7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe

  • Size

    512KB

  • MD5

    42836e7a6c9e56debb04aa192c9dd3f0

  • SHA1

    f28722c60a354a79fd6fad6932ff28d1034eaba5

  • SHA256

    7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362

  • SHA512

    01b4a6f7fd965a10628be28f038152dad9de86d7f01bbfb025b238ec5cf941a1b59dc8e727a506f5e94af95b67957d84d494c9cb5e4e69b25160be8a249fce25

  • SSDEEP

    12288:p7LABZYQkao8Rqc5pbIvFPWOLogchFk/cmW1bGfKKxvEFlI:xN8cc5pbGlo6W1bG7dUI

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
      "C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:1832

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\nsy8547.tmp\System.dll

          Filesize

          11KB

          MD5

          3f176d1ee13b0d7d6bd92e1c7a0b9bae

          SHA1

          fe582246792774c2c9dd15639ffa0aca90d6fd0b

          SHA256

          fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

          SHA512

          0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

        • memory/1832-66-0x0000000000E40000-0x0000000002444000-memory.dmp

          Filesize

          22.0MB

        • memory/1832-67-0x0000000077900000-0x0000000077AA9000-memory.dmp

          Filesize

          1.7MB

        • memory/1832-68-0x0000000000E40000-0x0000000002444000-memory.dmp

          Filesize

          22.0MB

        • memory/1832-69-0x0000000077900000-0x0000000077AA9000-memory.dmp

          Filesize

          1.7MB

        • memory/1832-70-0x0000000000400000-0x0000000000615000-memory.dmp

          Filesize

          2.1MB

        • memory/2804-61-0x00000000039F0000-0x0000000004FF4000-memory.dmp

          Filesize

          22.0MB

        • memory/2804-62-0x00000000039F0000-0x0000000004FF4000-memory.dmp

          Filesize

          22.0MB

        • memory/2804-63-0x0000000077900000-0x0000000077AA9000-memory.dmp

          Filesize

          1.7MB

        • memory/2804-64-0x0000000077AF0000-0x0000000077BC6000-memory.dmp

          Filesize

          856KB

        • memory/2804-65-0x0000000010000000-0x0000000010006000-memory.dmp

          Filesize

          24KB