General

  • Target

    SolaraB.zip

  • Size

    5KB

  • Sample

    240521-x4rsrafh81

  • MD5

    5d2a15f24ed13751ff2989cf63c0dc04

  • SHA1

    45cf00964e4c7fcd406545db0240b043e2172d5a

  • SHA256

    b20a675a73f1940c54dda5cad8f5455bf4baa31d77edce3f391b12995d0abe85

  • SHA512

    97ae56f951abfaffa5c8318f5103cfca3b7165b37d3ca84c9939b4f415e03fba782aeca9eba325bd2687e9fcfac315a2854a5b85a7316ac5e8890cd38cf7b7e9

  • SSDEEP

    96:ZrIWVVuu0w2xd9smXZPc3cRVfUsFaU/kJp3/RmjhGd3yHcITnOyB4juB/wSySo:Zkhd9sGZPtRSwa6cpPRCAdCHcITrBhIz

Malware Config

Targets

    • Target

      SolaraB/Solara/SolaraBootstrapper.exe

    • Size

      12KB

    • MD5

      74494703e5f44eeb9aa037f0f50bf682

    • SHA1

      fcfd8813e63cd61c5bfd2db605827fb9070fe8e9

    • SHA256

      3e4f692506d372bebc12d344c5f1543b67fa1dbe095c910aab78456510d7fe66

    • SHA512

      dbd2a8d928c797c70c4286d8ebabe202902445ed60e94eeccf33c7e3d794c7e362139187dcd1a57a4919503c1c791cfbe38f6f6eff454248382b3c4e023791fe

    • SSDEEP

      192:WrnDHbLupIapaLPr/XKnxxTc1l6VXtrNjA:WrnzHUIapazzKxm1cVdZj

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks