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General

  • Target

    ecc6720d3a29597d8d905658694cea35cb46b9395ed80cf18155a06d48a05dab

  • Size

    263KB

  • Sample

    221107-rnp2bsdfgm

  • MD5

    51ca877d54c208857ea8a5b65bde6e5a

  • SHA1

    738dc3f45843a7a58c1e90be040c3ac9e96479c4

  • SHA256

    ecc6720d3a29597d8d905658694cea35cb46b9395ed80cf18155a06d48a05dab

  • SHA512

    3ccb76e3ab4eaab5ba6ab965571751c1058cfb2cc543ea09d61437e06c0029b63a56dbed08579302b5c62ca15181de9e1b8b5b4901818926a37d8a3b3955865e

  • SSDEEP

    6144:JBr9fEjPswpzDFi2XFF47RpYlvP8kq/ac6M:CjPskM2Xv47RGlvy/ac6M

Malware Config

Targets

    • Target

      f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe

    • Size

      263KB

    • MD5

      9d016244b7f58fa5e974ef5f6e1ae54e

    • SHA1

      001bc943725ab768f8b8ecb2c9d3ae328f33c78b

    • SHA256

      f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f

    • SHA512

      292c222ca38e12c933769e128c9682a23719204214c1aca7e585eb1ef6c8c8b2090514298df16fe8b233482d8a7dedddd402c7db1d90aae8ea67915a2ff422d7

    • SSDEEP

      6144:iBr9fEjPswpzDFi2XFF47RpYlvP8kq/ac6:DjPskM2Xv47RGlvy/ac6

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v6

Tasks