General

  • Target

    file.exe

  • Size

    4.3MB

  • Sample

    230321-a33gjaaa4z

  • MD5

    d80448b684ce5ebb82305199177c428c

  • SHA1

    b5aad338c6f026442c18b3ea515abcb7bdb2c0e4

  • SHA256

    92618bacafd87b6655b729bcc61285150b0e1c5da339162144d652fe3d6be629

  • SHA512

    5dd639188abebbcd3b7a1868ee156b1574316ee7d1f51b6cd8767a50415256d224932b54a9b95d263e499c0619f35e65823e98957e7675bb3ab8654e562462f1

  • SSDEEP

    49152:tRcTFkJWRR1WFKymfGEbpzGgcroQsgZ7fh7hNwGi8owARjHZn7/goiSGGYswUNM:/IFkJWgUzeepzGgcroxglJmRGGYsw0M

Malware Config

Targets

    • Target

      file.exe

    • Size

      4.3MB

    • MD5

      d80448b684ce5ebb82305199177c428c

    • SHA1

      b5aad338c6f026442c18b3ea515abcb7bdb2c0e4

    • SHA256

      92618bacafd87b6655b729bcc61285150b0e1c5da339162144d652fe3d6be629

    • SHA512

      5dd639188abebbcd3b7a1868ee156b1574316ee7d1f51b6cd8767a50415256d224932b54a9b95d263e499c0619f35e65823e98957e7675bb3ab8654e562462f1

    • SSDEEP

      49152:tRcTFkJWRR1WFKymfGEbpzGgcroQsgZ7fh7hNwGi8owARjHZn7/goiSGGYswUNM:/IFkJWgUzeepzGgcroxglJmRGGYsw0M

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

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

    • Downloads MZ/PE file

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

2
T1005

Tasks