General

  • Target

    4bb5aa42937187857a805d5405fbb0d82a49dde621e25b9dce74ed644393a471

  • Size

    2.9MB

  • Sample

    211228-yck2kaebb8

  • MD5

    f1dffa9fa58dab25262df38fef206123

  • SHA1

    4f0771b244ed3b106ecb7e42a355dda964d5aebb

  • SHA256

    4bb5aa42937187857a805d5405fbb0d82a49dde621e25b9dce74ed644393a471

  • SHA512

    369bf66442159d2e5b0b15cc2c9651931d53a4c836ced124029c7ddb250ce208b841acfa4a190d9c5bdc1b69d93af83d47b260fefc6bb8bdd62ea9f9259354f4

Malware Config

Targets

    • Target

      4bb5aa42937187857a805d5405fbb0d82a49dde621e25b9dce74ed644393a471

    • Size

      2.9MB

    • MD5

      f1dffa9fa58dab25262df38fef206123

    • SHA1

      4f0771b244ed3b106ecb7e42a355dda964d5aebb

    • SHA256

      4bb5aa42937187857a805d5405fbb0d82a49dde621e25b9dce74ed644393a471

    • SHA512

      369bf66442159d2e5b0b15cc2c9651931d53a4c836ced124029c7ddb250ce208b841acfa4a190d9c5bdc1b69d93af83d47b260fefc6bb8bdd62ea9f9259354f4

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

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

2
T1082

Tasks