Overview

overview

10

Static

static

10

BootstrapperNew.exe

windows10-2004-x64

10

BootstrapperNew.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    BootstrapperNew.exe
  • Size 638KB
  • Sample260602-w8ylescy2x
  • SHA256 c22964eece616d74e93f81a99ce8d4792d10028e51dfcc62baabb97489f011c6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
sheetratexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • sheetrat

Version

  • 1.8

C2

  • tcp.tcptunnel.shop:1031

Attributes
  • localhost

    127.0.0.1:8848

Targets

    • Target
      BootstrapperNew.exe
    • Size 638KB
    • SHA256 c22964eece616d74e93f81a99ce8d4792d10028e51dfcc62baabb97489f011c6
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    executionsheetratpersistenceprivilege_escalationtrojan

    • Detects Sheetrat obfuscated V1.8 and higher

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

    • Family: Sheetrat, NonEuclid rat

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

      trojansheetrat

    • Modifies WinLogon for persistence

      persistence

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

      persistenceprivilege_escalation

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks