Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15-11-2024 16:15

General

  • Target

    28dbe1a424619df840d06cebb87f8d08649a37db58e1c2e51ab25c84aa31701d.exe

  • Size

    242KB

  • MD5

    bd85503dd4bb3ccd9c6c294d3767d8e6

  • SHA1

    d98455443474b9aef06f1bff242a52e8bb4ec6d0

  • SHA256

    28dbe1a424619df840d06cebb87f8d08649a37db58e1c2e51ab25c84aa31701d

  • SHA512

    b6eeaa15f7c6573ec15208bc071d1d953404c7bd3cd06e4bd0cb2ab93e7678eb2c7425c7fe317c5f0e7f5fc9145cb14686c8157b5a0ab0b6e8a00bd6b0e2972d

  • SSDEEP

    6144:oIw3gEzFzShNZA1lZqrq6DHSCf7NVMf/WB/UvuEIN:jA2Ha172xSE7LMXWlUvuES

Malware Config

Signatures

  • Guloader family
  • 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 49 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).

  • 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\28dbe1a424619df840d06cebb87f8d08649a37db58e1c2e51ab25c84aa31701d.exe
    "C:\Users\Admin\AppData\Local\Temp\28dbe1a424619df840d06cebb87f8d08649a37db58e1c2e51ab25c84aa31701d.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:1984
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
      "C:\Users\Admin\AppData\Local\Temp\28dbe1a424619df840d06cebb87f8d08649a37db58e1c2e51ab25c84aa31701d.exe"
      2⤵
      • Checks QEMU agent file
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      PID:2076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsyA288.tmp\System.dll

    Filesize

    11KB

    MD5

    9625d5b1754bc4ff29281d415d27a0fd

    SHA1

    80e85afc5cccd4c0a3775edbb90595a1a59f5ce0

    SHA256

    c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448

    SHA512

    dce52b640897c2e8dbfd0a1472d5377fa91fb9cf1aeff62604d014bccbe5b56af1378f173132abeb0edd18c225b9f8f5e3d3e72434aed946661e036c779f165b

  • memory/1984-203-0x00000000035B0000-0x00000000042CE000-memory.dmp

    Filesize

    13.1MB

  • memory/1984-204-0x00000000035B0000-0x00000000042CE000-memory.dmp

    Filesize

    13.1MB

  • memory/1984-205-0x00000000779A1000-0x0000000077AA2000-memory.dmp

    Filesize

    1.0MB

  • memory/1984-206-0x00000000779A0000-0x0000000077B49000-memory.dmp

    Filesize

    1.7MB

  • memory/1984-215-0x00000000035B0000-0x00000000042CE000-memory.dmp

    Filesize

    13.1MB

  • memory/2076-207-0x00000000779A0000-0x0000000077B49000-memory.dmp

    Filesize

    1.7MB

  • memory/2076-209-0x0000000000400000-0x0000000000615000-memory.dmp

    Filesize

    2.1MB