Overview

overview

10

Static

static

3

Contract-pdf.bat.exe

windows7-x64

7

Contract-pdf.bat.exe

windows10-2004-x64

10

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

Sharing

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General

  • Target

    Contract-pdf.bat.exe

  • Size

    751KB

  • Sample

    250203-kv337sylfj

  • MD5

    455b5452ab7cc1d908fa70d7745a96fd

  • SHA1

    6fdbeda74a6d56453149e907b707cdd5ff7a193b

  • SHA256

    72433c6e5c9594689111646fbf25edacc240f028664b0216559aa5952ca3ec23

  • SHA512

    5e1687bd999369569202ac1b8255289cc75b0c0b2d0d54ab9c05676a7d37554bab09dbd38b4c45cd5d60cd56de9bcfc2efb7cf6d649679e938d7ddf0c3f436ad

  • SSDEEP

    12288:pX9/Od/QKZlFhOeTp/muQrOnpCirVUkstBLyywCwOD/Wh:pXRY/bHt/FQOncFHp

Score
10/10
guloaderdiscoverydownloader

Malware Config

Targets

    • Target

      Contract-pdf.bat.exe

    • Size

      751KB

    • MD5

      455b5452ab7cc1d908fa70d7745a96fd

    • SHA1

      6fdbeda74a6d56453149e907b707cdd5ff7a193b

    • SHA256

      72433c6e5c9594689111646fbf25edacc240f028664b0216559aa5952ca3ec23

    • SHA512

      5e1687bd999369569202ac1b8255289cc75b0c0b2d0d54ab9c05676a7d37554bab09dbd38b4c45cd5d60cd56de9bcfc2efb7cf6d649679e938d7ddf0c3f436ad

    • SSDEEP

      12288:pX9/Od/QKZlFhOeTp/muQrOnpCirVUkstBLyywCwOD/Wh:pXRY/bHt/FQOncFHp

    Score
    10/10
    discoveryguloaderdownloader

    • Guloader family

      guloader

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Loads dropped DLL

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/System.dll

    • Size

      12KB

    • MD5

      4add245d4ba34b04f213409bfe504c07

    • SHA1

      ef756d6581d70e87d58cc4982e3f4d18e0ea5b09

    • SHA256

      9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706

    • SHA512

      1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

    • SSDEEP

      192:VjHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZv0QPi:B/Qlt7wiij/lMRv/9V4bvr

    Score
    3/10
    discovery
    behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Tasks