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General

  • Target

    file.exe

  • Size

    1.3MB

  • Sample

    230921-fe4ycafc87

  • MD5

    3f5de99df534a4aa47659cce69238dc4

  • SHA1

    0d173c585da993ed86ec2c97eb0d41b2308fff94

  • SHA256

    bbeb9a847e2d0fb756862e4d822bc86c9e58238fab4dbf976802f38a1b66c4cc

  • SHA512

    5e1628c2ca2e48bc98ab7561b23e326a14448d7ae815e4014bbf15c8009b51f1aaf4636fc4f3ae4be922a97e80f31e27fe4aed2f7829788a2021330f175dda26

  • SSDEEP

    24576:Zyl59Ic9EpSlrirn/XSQzX0uy90IccdoM7ecPvTuwBtikrZEY5N:MlnIiEpIiOY6xccK6ewTuqtnrZZ5

Malware Config

Extracted

Family

redline

Botnet

trush

C2

77.91.124.82:19071

Attributes
  • auth_value

    c13814867cde8193679cd0cad2d774be

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Targets

    • Target

      file.exe

    • Size

      1.3MB

    • MD5

      3f5de99df534a4aa47659cce69238dc4

    • SHA1

      0d173c585da993ed86ec2c97eb0d41b2308fff94

    • SHA256

      bbeb9a847e2d0fb756862e4d822bc86c9e58238fab4dbf976802f38a1b66c4cc

    • SHA512

      5e1628c2ca2e48bc98ab7561b23e326a14448d7ae815e4014bbf15c8009b51f1aaf4636fc4f3ae4be922a97e80f31e27fe4aed2f7829788a2021330f175dda26

    • SSDEEP

      24576:Zyl59Ic9EpSlrirn/XSQzX0uy90IccdoM7ecPvTuwBtikrZEY5N:MlnIiEpIiOY6xccK6ewTuqtnrZZ5

    • Detects Healer an antivirus disabler dropper

    • Healer

      Healer an antivirus disabler dropper.

    • Modifies Windows Defender Real-time Protection settings

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Windows security modification

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks