Overview

overview

10

Static

static

3

svchost.exe

windows10-ltsc_2021-x64

10

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General

  • Target
    svchost.exe
  • Size 31.5MB
  • Sample250627-cbst5ael41
  • SHA256 3e0e315f37789f1975ea0f2468cd60dc5874438159328014b2a5bc152cc5a458
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
teardropxwormbackdoordiscoverydropperrattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • 45.141.27.119:7000

Mutex

  • t15QxWy0XoRdYzz2

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    svchost.exe

aes.plain

Targets

    • Target
      svchost.exe
    • Size 31.5MB
    • SHA256 3e0e315f37789f1975ea0f2468cd60dc5874438159328014b2a5bc152cc5a458
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    teardropxwormbackdoordiscoverydropperrattrojan

    • Detect Xworm Payload

    • Detected TEARDROP fileless dropper

      TEARDROP is a memory-only dropper which can read files/registry keys, decode an embedded payload, and load it directly into memory.

      dropperbackdoor

    • Teardrop

      Teardrop is a 64-bit DLL backdoor related to the SolarWinds breaches.

      trojanbackdoorteardrop

    • Teardrop family

      teardrop

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Xworm family

      xworm

    • Checks computer location settings

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

    • Executes dropped EXE

    • Modifies file permissions

      discovery

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks