General

  • Target

    file.exe

  • Size

    5.2MB

  • Sample

    230509-ktwbzafa56

  • MD5

    83ab8e3480d7543a80acf065eedba3c8

  • SHA1

    b0d24bb33730abdbe67e137a0cddbc01380aa808

  • SHA256

    80ee2b0cbfb7ecf1571669ba411b2a9bf0fc0293662a061055a17d7bdb30ead8

  • SHA512

    7cf4e5addb32e079ccbd2b185bd9b73a8667ccca2572f55fc6f02105741dd018c31452a4e3eb8ab8930ccd3ab16caec3e5e445906c104d7008f958ba2c6c15e3

  • SSDEEP

    98304:5lUfVD9zVKzdR5+SsLJdNlJPq1SoJXvaPIYh4Xbs37N3k:r6zVaj+S0jq1Soc1hyItk

Malware Config

Targets

    • Target

      file.exe

    • Size

      5.2MB

    • MD5

      83ab8e3480d7543a80acf065eedba3c8

    • SHA1

      b0d24bb33730abdbe67e137a0cddbc01380aa808

    • SHA256

      80ee2b0cbfb7ecf1571669ba411b2a9bf0fc0293662a061055a17d7bdb30ead8

    • SHA512

      7cf4e5addb32e079ccbd2b185bd9b73a8667ccca2572f55fc6f02105741dd018c31452a4e3eb8ab8930ccd3ab16caec3e5e445906c104d7008f958ba2c6c15e3

    • SSDEEP

      98304:5lUfVD9zVKzdR5+SsLJdNlJPq1SoJXvaPIYh4Xbs37N3k:r6zVaj+S0jq1Soc1hyItk

    • 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.

    • 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

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