Overview

overview

10

Static

static

3

Slinky/slink/load.exe

windows7-x64

10

Slinky/slink/load.exe

windows10-2004-x64

10

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General

  • Target

    SlinkyByoJuba.zip

  • Size

    17.7MB

  • Sample

    250127-wr81tszqby

  • MD5

    e68e6d381e8f4445e91dfeb32b789470

  • SHA1

    2fd535837fb07143257f4c754fa805f8e998ca55

  • SHA256

    0c70a683dc7964b4a37b655928d87b172043c8582c3cfce38f69901ec53b3b88

  • SHA512

    130260b3afbafcfb33ec70901fe64075e855b88a23725d9d74404f63a4fb7de3b59f0fc1fadb406297b84e205532443bed86ed49a551522211167f075378569f

  • SSDEEP

    393216:Vw5OSsqSxtps6zoLeU3723b5VrefnJg5vd6wMyXuJKKYfgzCam:VjSktphiN3G5Vr4JgdduyXuQKYfgGam

Score
10/10
umbraldiscoveryexecutionspywarestealer

Malware Config

Targets

    • Target

      Slinky/slink/load.exe

    • Size

      17.8MB

    • MD5

      86d4579d1dbfd7be291f5d198d805398

    • SHA1

      8636bb288af7549f10d50eba8f8a4489ffee4222

    • SHA256

      d0e0881cc1edb247c39628fbcaec00fae6ec3617bde0869538aed888f4e6a63a

    • SHA512

      0ae111f7761778429b6e93ecbd4547a3280c52dfba781c42cf37e046cfe440d69d49a3caa8d3a58f6013b644e80e908fdbd7415340b764f6a4900806aceb877c

    • SSDEEP

      393216:YQsUy4Ln/msXQDkaxfqTJ9h7yXVHM5dzI2UeHqrCMMDcbiK3:nsun/3GTxW9h7G5M7z2eHqeMMDcWK3

    Score
    10/10
    umbraldiscoveryexecutionspywarestealer

    • Detect Umbral payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

      stealerumbral

    • Umbral family

      umbral

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks