Resubmissions

12/05/2022, 21:09

220512-zzeczaabg49

10/05/2022, 12:16

220510-pfl9csbefm10

09/05/2022, 23:26

220509-3e4nxaedh710

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    10/05/2022, 12:16

General

  • Target
    oblot.dll
  • Size 1.3MB
  • Sample220510-pfl9csbefm
  • SHA256 281a1cfaebf968012e9596721d14b1bd6429744617e73f96558cb68bcc0db8f8
  • MD5 SHA1 SHA512
Score
9/10

Malware Config

Signatures

  • Enumerates VirtualBox registry keys 2 TTPs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 3 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 behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\oblot.dll,#1
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious behavior: EnumeratesProcesses
    PID:3136

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3136-130-0x00007FF8C1520000-0x00007FF8C1530000-memory.dmp