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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    23/02/2024, 14:33

General

  • Target

    CShell.dll

  • Size

    4.0MB

  • MD5

    2cb425cb5cf0a2d1f0d74bc1437e3cdb

  • SHA1

    e9e8594788058d204d4014f781d8262dc9a79971

  • SHA256

    c050a812f9e5d0d42fde7cc2d7996c634c0496d726a4cd4edf372d5d5610244d

  • SHA512

    fc668c0d1a1428b76d2578c25eb062c5a0eeb44f27065d6f595a468c5c855ca8a4474ca1d5ca0226acea3090df8d402ef31d9604f06d692ef944af98ee06f095

  • SSDEEP

    98304:y9n1MEszUnUruxXm8lDNMZXK3wBUu59xhGcK:pTUUr0mvMbu5PhG

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\CShell.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\CShell.dll,#1
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:2204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2204-0-0x0000000010000000-0x000000001159A000-memory.dmp

    Filesize

    21.6MB

  • memory/2204-1-0x0000000010000000-0x000000001159A000-memory.dmp

    Filesize

    21.6MB

  • memory/2204-2-0x0000000010000000-0x000000001159A000-memory.dmp

    Filesize

    21.6MB

  • memory/2204-3-0x0000000010000000-0x000000001159A000-memory.dmp

    Filesize

    21.6MB

  • memory/2204-4-0x0000000077D80000-0x0000000077D82000-memory.dmp

    Filesize

    8KB