Overview

overview

10

Static

static

3

NEAS.2023-...JC.exe

windows7-x64

10

NEAS.2023-...JC.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    NEAS.2023-09-09_33a23f4d5daaa89eb8d8670d6905e2b6_ryuk_JC.exe

  • Size

    23.8MB

  • Sample

    231031-sxms1aad7v

  • MD5

    33a23f4d5daaa89eb8d8670d6905e2b6

  • SHA1

    d8f5fda873300d62264476857127aec2630ac69d

  • SHA256

    7a594a1a5faee5de90b6730de40f8c768d81ec6c612879d0c1c4e63cd06e755d

  • SHA512

    fa79e6b0705ab6afed75da132b457752c9e68f7ff9c211060ea41f8faff60cba43a46ff34db98ebb28635f68f8cfa05d73e21a45355443d523f808f4be71995d

  • SSDEEP

    98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMF:9nwngnwnBRs

Score
10/10
persistenceransomware

Malware Config

Targets

    • Target

      NEAS.2023-09-09_33a23f4d5daaa89eb8d8670d6905e2b6_ryuk_JC.exe

    • Size

      23.8MB

    • MD5

      33a23f4d5daaa89eb8d8670d6905e2b6

    • SHA1

      d8f5fda873300d62264476857127aec2630ac69d

    • SHA256

      7a594a1a5faee5de90b6730de40f8c768d81ec6c612879d0c1c4e63cd06e755d

    • SHA512

      fa79e6b0705ab6afed75da132b457752c9e68f7ff9c211060ea41f8faff60cba43a46ff34db98ebb28635f68f8cfa05d73e21a45355443d523f808f4be71995d

    • SSDEEP

      98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzMF:9nwngnwnBRs

    Score
    10/10
    persistenceransomware

    • Modifies WinLogon for persistence

      persistence

    • Renames multiple (167) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks