General

  • Target

    Caiori.7z

  • Size

    25.0MB

  • Sample

    230315-r9a5asdg35

  • MD5

    99536f2a3a94c1d6e9312a58a316dad5

  • SHA1

    c9ba07fe92d6908a0c90d4fb02c6174b597668c6

  • SHA256

    2f72a443711dcb2ed5a9f760fe517ee156963c7c73c8c77a29dbdb2469353254

  • SHA512

    5db2b5776b1a62d00db6cd0d9f9300790165ed33c1e571d66fd8cf4f32d528f3f7647b569def0fa11f8d91ff4376e9e49e4e23043e4704ec3ac46129d535f452

  • SSDEEP

    786432:XDkCEKNrQTlJnNgIIiJ8J1Ly9WcpxjLQ/7no6o+GJcdUrUF:XHjtaqfxJ1Nk6o6o+GJcdTF

Malware Config

Targets

    • Target

      Caiori.exe

    • Size

      55.9MB

    • MD5

      fa2506d2f26a8620252672f9b4fe1982

    • SHA1

      c44d2903a80f22bb6956895f24c52e4e281d0e30

    • SHA256

      09616435fdac3fc6dbc3ada7c6f3aed5a4a369418a99a162e8c6134d25a905ea

    • SHA512

      b4a5245570156fb4bcbbcd162a6c7550d6ca04b4b6434c2d05e370462910f8c492e5058e96806f2f8a7fb8bdbf4f73e63459c61485e95f237a37a1942fe02c54

    • SSDEEP

      786432:80LoCOn+27s4urYDNulLBiuV8P876Drt57RVK4Q/h5pUaHUL:8MoCm/7Xw6O4Q/h5pUL

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

    • 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.

    • Drops startup file

    • 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 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.

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Process Discovery

1
T1057

Collection

Data from Local System

1
T1005

Tasks