Resubmissions

02/05/2023, 11:37

230502-nrl73aah467

25/04/2023, 12:30

230425-ppgp8scb5v10

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/05/2023, 11:37

General

  • Target
    DOCUMENT.exe
  • Size 715KB
  • Sample230502-nrl73aah46
  • SHA256 6ac986e8a1d186735ff4116474abb8de5da5cb51c3cc980bc21c37b4cdeb7b62
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • 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
  • 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.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:4280
    • C:\Users\Admin\AppData\Local\Temp\DOCUMENT.exe
      "C:\Users\Admin\AppData\Local\Temp\DOCUMENT.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:1832

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsc8D72.tmp\System.dll
        • Size 11KB
        • SHA256 b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352
        • MD5 SHA1 SHA512 SSDEEP

        memory/1832-143-0x0000000000400000-0x0000000001654000-memory.dmp

        memory/1832-153-0x0000000000400000-0x0000000001654000-memory.dmp