Overview

overview

10

Static

static

3

SheetRat.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    SheetRat.EXE
  • Size 7.8MB
  • Sample260905-w3gqqafd65
  • SHA256 04fdece9dda50a970d68d9300c07a2c84531123462737830d43b6119c39b3073
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
sheetratsheet_nbszmiyxtaxdiscoveryexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

  • sheetrat

Campaign

  • Sheet_nbszmiyxtax

C2

  • 87.120.107.203:7344

Targets

    • Target
      SheetRat.EXE
    • Size 7.8MB
    • SHA256 04fdece9dda50a970d68d9300c07a2c84531123462737830d43b6119c39b3073
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    sheet_nbszmiyxtaxdiscoveryexecutionsheetratpersistenceprivilege_escalationtrojan

    • Detects Sheetrat obfuscated V1.8 and higher

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

    • Detects Sheetrat obfuscated version

    • 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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

      discovery
    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

AppInit DLLs

1
T1546.010

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

AppInit DLLs

1
T1546.010

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks