Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-1703-x64

10

Client.exe

windows10-2004-x64

10

Client.exe

windows11-21h2-x64

1

Analysis

  • max time kernel
    300s
  • max time network
    297s
  • platform
    windows10-1703_x64
  • resource
    win10-20240214-en
  • resource tags

    arch:x64arch:x86image:win10-20240214-enlocale:en-usos:windows10-1703-x64system
  • submitted
    15-02-2024 13:13

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    Client.exe

  • Size

    31KB

  • MD5

    ae6157924ef21b5c57f904a2fa44eed9

  • SHA1

    58c369ec7399bb91e9253efed30e722fdd287a1e

  • SHA256

    3792524100bb9e7468dad52bbdd3a84175effa0cceb78dea77cefe46ffc2e4b2

  • SHA512

    c62d889bd493709e3419af1813a7befa895f721acdde9af733209bfb803f30a57c02102ad02ea186dafab6b609c5ffa86fe1542841bc45df1bd55aa7690f8331

  • SSDEEP

    768:MC9K6MpN/BizxNOZBs9RSLJFTvTJQmIDUu0tiBhj:D7gUczJtQVk+j

Score
10/10
njratupdateevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Update

C2

llllllllllllllllllllllllllll.site:2222

Mutex

b776413e4d59521efc868682834c8333

Attributes
  • reg_key

    b776413e4d59521efc868682834c8333

  • splitter

    Y262SUCZ4UJJ

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\ProgramData\Update.exe
      "C:\ProgramData\Update.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1796
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\ProgramData\Update.exe" "Update.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1228

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Update.exe
    Filesize

    31KB

    MD5

    ae6157924ef21b5c57f904a2fa44eed9

    SHA1

    58c369ec7399bb91e9253efed30e722fdd287a1e

    SHA256

    3792524100bb9e7468dad52bbdd3a84175effa0cceb78dea77cefe46ffc2e4b2

    SHA512

    c62d889bd493709e3419af1813a7befa895f721acdde9af733209bfb803f30a57c02102ad02ea186dafab6b609c5ffa86fe1542841bc45df1bd55aa7690f8331

    Download Submit
  • memory/1796-10-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1796-11-0x00000000028B0000-0x00000000028C0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1796-12-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1796-14-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1796-15-0x00000000028B0000-0x00000000028C0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/1796-16-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2268-0-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2268-1-0x00000000027F0000-0x0000000002800000-memory.dmp
    Filesize

    64KB

    Download
  • memory/2268-2-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2268-9-0x0000000073C20000-0x00000000741D0000-memory.dmp
    Filesize

    5.7MB

    Download