General

  • Target

    sample

  • Size

    38KB

  • Sample

    220802-l75cgadfh8

  • MD5

    5e2ae013eb8311a3305ef4feede19e52

  • SHA1

    c7a2682bbcb049a34df44b57d2103421687baa70

  • SHA256

    ba4c9bc4a4d91acc617a56ca2b36004881d4b830e0e8803041ed411fb3c8eb2b

  • SHA512

    1274443a4cefe8f4769071fa7fc1c8deeb936cffa65292105f2e6b55f3a1518cfb5b59042f2797682207825d099f0eaf7075fe8171d5f46454e2930432f74d3b

Malware Config

Targets

    • Target

      sample

    • Size

      38KB

    • MD5

      5e2ae013eb8311a3305ef4feede19e52

    • SHA1

      c7a2682bbcb049a34df44b57d2103421687baa70

    • SHA256

      ba4c9bc4a4d91acc617a56ca2b36004881d4b830e0e8803041ed411fb3c8eb2b

    • SHA512

      1274443a4cefe8f4769071fa7fc1c8deeb936cffa65292105f2e6b55f3a1518cfb5b59042f2797682207825d099f0eaf7075fe8171d5f46454e2930432f74d3b

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • 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 desktop.ini file(s)

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Collection

Data from Local System

1
T1005

Tasks