Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    09/07/2024, 09:49

General

  • Target
    118327932 AR_Feb_kazkhstan _2024-v2.exe
  • Size 697KB
  • Sample240709-ltd85axejr
  • SHA256 2e2b22d80e84945f3149e24fb08a874e5293d4fbbff6d7df7c941fb47be9b4ff
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\118327932 AR_Feb_kazkhstan _2024-v2.exe
    "C:\Users\Admin\AppData\Local\Temp\118327932 AR_Feb_kazkhstan _2024-v2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Program Files (x86)\windows mail\wab.exe
      "C:\Users\Admin\AppData\Local\Temp\118327932 AR_Feb_kazkhstan _2024-v2.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetWindowsHookEx
      PID:2696

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        System.dll

        • Path \Users\Admin\AppData\Local\Temp\nst9CEC.tmp\System.dll
        • Size 11KB
        • SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
        • MD5 SHA1 SHA512 SSDEEP

        memory/2044-12-0x00000000775E1000-0x00000000776E2000-memory.dmp

        memory/2044-13-0x00000000775E0000-0x0000000077789000-memory.dmp

        memory/2696-14-0x00000000775E0000-0x0000000077789000-memory.dmp

        memory/2696-16-0x0000000000900000-0x0000000001962000-memory.dmp

        memory/2696-36-0x0000000001970000-0x00000000073C2000-memory.dmp