Resubmissions

10-07-2024 12:56

240710-p6khfs1eng 10

10-07-2024 12:56

240710-p6ft9s1end 10

10-07-2024 12:55

240710-p57llaygpj 10

Analysis

  • max time kernel
    299s
  • max time network
    296s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-07-2024 12:56

General

  • Target

    62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe

  • Size

    438KB

  • MD5

    9afb4103021c5ec8b2dea2772f39178e

  • SHA1

    bc773e17fc6e7080b4243a9b72ac75292d17bc90

  • SHA256

    62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a

  • SHA512

    82c5fd97d80bd79c0377b1c8ea3a6e2f00f10b7ae14febc0ba9c8e5bd1405c05f62f2c66db1571b0596bd0a459e32dd58c8e9bf894068418d5b40b54b488ef33

  • SSDEEP

    12288:LW7Ck8jvhUX7Arm+PJnGdijUR9MEuqbZv:LWeLaQnhGEYjfhbZv

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 2 IoCs
  • Adds Run key to start application 2 TTPs 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 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
    "C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.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:1564
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
      "C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe"
      2⤵
        PID:2044
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
        "C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe"
        2⤵
        • Checks QEMU agent file
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        PID:2200

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nsm72CF.tmp\System.dll

      Filesize

      11KB

      MD5

      2ae993a2ffec0c137eb51c8832691bcb

      SHA1

      98e0b37b7c14890f8a599f35678af5e9435906e1

      SHA256

      681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59

      SHA512

      2501371eb09c01746119305ba080f3b8c41e64535ff09cee4f51322530366d0bd5322ea5290a466356598027e6cda8ab360caef62dcaf560d630742e2dd9bcd9

    • memory/1564-14-0x00000000041A0000-0x0000000005048000-memory.dmp

      Filesize

      14.7MB

    • memory/1564-15-0x0000000076EF1000-0x0000000077011000-memory.dmp

      Filesize

      1.1MB

    • memory/1564-16-0x0000000010004000-0x0000000010005000-memory.dmp

      Filesize

      4KB

    • memory/1564-17-0x0000000010000000-0x0000000010006000-memory.dmp

      Filesize

      24KB

    • memory/1564-19-0x00000000041A0000-0x0000000005048000-memory.dmp

      Filesize

      14.7MB

    • memory/2200-18-0x0000000000F00000-0x0000000001DA8000-memory.dmp

      Filesize

      14.7MB

    • memory/2200-22-0x0000000076F78000-0x0000000076F79000-memory.dmp

      Filesize

      4KB

    • memory/2200-21-0x0000000076EF1000-0x0000000077011000-memory.dmp

      Filesize

      1.1MB

    • memory/2200-29-0x0000000000400000-0x000000000062B000-memory.dmp

      Filesize

      2.2MB

    • memory/2200-31-0x0000000000F00000-0x0000000001DA8000-memory.dmp

      Filesize

      14.7MB