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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/08/2024, 01:24

General

  • Target

    76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be.exe

  • Size

    949KB

  • MD5

    452069cc035deac2144e5a854a69c586

  • SHA1

    448825cc91b5d3248d9af52bfbcd9b29e5c040a5

  • SHA256

    76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be

  • SHA512

    1d4fd3d5f75916c46feaa959cd79e13497d5048a4907d508663de988e7d886c024e1e663e681bd490c98934c17879a419a6ba32b43c01af3e95064cb8b1a99e4

  • SSDEEP

    24576:cJMWo7yZWAVax8G9MXQzQJIdN33UyWbRyEy1dmYEjH:UfZfVXOMkhEyWbRyNDmNjH

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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be.exe
    "C:\Users\Admin\AppData\Local\Temp\76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3996
    • C:\Users\Admin\AppData\Local\Temp\76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be.exe
      "C:\Users\Admin\AppData\Local\Temp\76352129fb5c6724d764d342ef0608392de3e50b8e2b6316552593cb7e5df3be.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:1648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsr97CD.tmp\System.dll

    Filesize

    12KB

    MD5

    dd87a973e01c5d9f8e0fcc81a0af7c7a

    SHA1

    c9206ced48d1e5bc648b1d0f54cccc18bf643a14

    SHA256

    7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

    SHA512

    4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

  • C:\Users\Public\Desktop\gasmesteren.lnk

    Filesize

    1KB

    MD5

    5df96007123a390bd10b407719c8b671

    SHA1

    907efc52d9d01954c614b78b8b807a346dd0e6aa

    SHA256

    606e38f4a82c6e08aff9364420fe35e676b8a6edd4dccc3e2f9f75b9e9f94d75

    SHA512

    f0d7bb1b0efa52ae6712ad4b6e5a37ed97c741e4e07fda4c36bd72168770a3e8bafb913368d93d3f8ac8125b5b9fc1773495f3abb0940a258f0aab297eda578b

  • memory/1648-289-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/1648-290-0x0000000001660000-0x000000000373F000-memory.dmp

    Filesize

    32.9MB

  • memory/1648-291-0x0000000000400000-0x0000000001654000-memory.dmp

    Filesize

    18.3MB

  • memory/1648-292-0x0000000001660000-0x000000000373F000-memory.dmp

    Filesize

    32.9MB

  • memory/3996-284-0x0000000004A00000-0x0000000006ADF000-memory.dmp

    Filesize

    32.9MB

  • memory/3996-285-0x0000000004A00000-0x0000000006ADF000-memory.dmp

    Filesize

    32.9MB

  • memory/3996-286-0x0000000076F71000-0x0000000077091000-memory.dmp

    Filesize

    1.1MB

  • memory/3996-288-0x0000000073DD5000-0x0000000073DD6000-memory.dmp

    Filesize

    4KB

  • memory/3996-287-0x0000000076F71000-0x0000000077091000-memory.dmp

    Filesize

    1.1MB