General

  • Target

    Injector.exe

  • Size

    2.9MB

  • Sample

    211021-aacemsaehm

  • MD5

    b08ad9c7f95ff11da0b0b93543e35bbc

  • SHA1

    da304fbd1bb1ff500355d1cde15bada5f42afa8c

  • SHA256

    83183a8d40a911690ac0064964d07bac630a508a63a43b56fb61ed405d8d8900

  • SHA512

    64475323852be6211ddbd74c2bd42fd961f117584f7b83cfbf931bc2fb6859db313b9fe9e0f9767555417d3113fd6d95826a4c68faf3f7264a282f0ec2097a3f

Malware Config

Targets

    • Target

      Injector.exe

    • Size

      2.9MB

    • MD5

      b08ad9c7f95ff11da0b0b93543e35bbc

    • SHA1

      da304fbd1bb1ff500355d1cde15bada5f42afa8c

    • SHA256

      83183a8d40a911690ac0064964d07bac630a508a63a43b56fb61ed405d8d8900

    • SHA512

      64475323852be6211ddbd74c2bd42fd961f117584f7b83cfbf931bc2fb6859db313b9fe9e0f9767555417d3113fd6d95826a4c68faf3f7264a282f0ec2097a3f

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • XMRig Miner Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks