General

  • Target

    039d89eb25f4ba10072670615bf0dbe58455bdb399f67749b5af182995f68645

  • Size

    2.3MB

  • Sample

    220527-3ym59shdh7

  • MD5

    580eab24eb79c5b5a2f1991e1f0999f5

  • SHA1

    17c3558efaa21d285bfd7a0262cfcc90b344ab7e

  • SHA256

    039d89eb25f4ba10072670615bf0dbe58455bdb399f67749b5af182995f68645

  • SHA512

    955f642ae191f895357b5a294339ee18e09318ce71849f16a42ebb5906be76fd80b5a9066ad7e1d497918723384fa1bee015c05e9d0d0aecd3fd5233d9b561e2

Malware Config

Targets

    • Target

      039d89eb25f4ba10072670615bf0dbe58455bdb399f67749b5af182995f68645

    • Size

      2.3MB

    • MD5

      580eab24eb79c5b5a2f1991e1f0999f5

    • SHA1

      17c3558efaa21d285bfd7a0262cfcc90b344ab7e

    • SHA256

      039d89eb25f4ba10072670615bf0dbe58455bdb399f67749b5af182995f68645

    • SHA512

      955f642ae191f895357b5a294339ee18e09318ce71849f16a42ebb5906be76fd80b5a9066ad7e1d497918723384fa1bee015c05e9d0d0aecd3fd5233d9b561e2

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

    • Looks for VirtualBox Guest Additions in registry

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

    • Registers COM server for autorun

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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.

    • Deletes itself

    • Identifies Wine through registry keys

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

2
T1060

Browser Extensions

1
T1176

Bootkit

1
T1067

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

4
T1497

Modify Registry

4
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

4
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

1
T1005

Tasks