Overview

overview

10

Static

static

3

7e1d752bf5...fN.exe

windows7-x64

10

7e1d752bf5...fN.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-11-2024 12:56

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General

  • Target

    7e1d752bf5e48beaee791bf713faa0c6f775615a6c3510c4fcb2f0a26bee8c2fN.exe

  • Size

    1.1MB

  • MD5

    2824357a38956899bfdb67611b2dc580

  • SHA1

    ffc7d3563d0f3f631247862374c80addb88a082d

  • SHA256

    7e1d752bf5e48beaee791bf713faa0c6f775615a6c3510c4fcb2f0a26bee8c2f

  • SHA512

    23d827361396e6d733fb46e488a7bece6097c3d744cbfaaf9aa22f060d4f7c394241a54d9e82035ec108d0711d80aa0f4daddabae566f53ba919bddd973d6b11

  • SSDEEP

    24576:rl0JTewBi+2S9gFdQ5HUoZ/5dTgIh2DGla6LwAtml/MS0l2YWr:x0J6SiuHT/vh2DGlvfml/I25

Score
10/10
njratrezerodiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

ReZero

C2

web-authentication.gl.at.ply.gg:23352

Mutex

cb803fe6e41a214d06a52290e615a098

Attributes
  • reg_key

    cb803fe6e41a214d06a52290e615a098

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 14 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e1d752bf5e48beaee791bf713faa0c6f775615a6c3510c4fcb2f0a26bee8c2fN.exe
    "C:\Users\Admin\AppData\Local\Temp\7e1d752bf5e48beaee791bf713faa0c6f775615a6c3510c4fcb2f0a26bee8c2fN.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Roaming\svhost.exe
      "C:\Users\Admin\AppData\Roaming\svhost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svhost.exe" "svhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:1124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svhost.exe
    Filesize

    1.1MB

    MD5

    2824357a38956899bfdb67611b2dc580

    SHA1

    ffc7d3563d0f3f631247862374c80addb88a082d

    SHA256

    7e1d752bf5e48beaee791bf713faa0c6f775615a6c3510c4fcb2f0a26bee8c2f

    SHA512

    23d827361396e6d733fb46e488a7bece6097c3d744cbfaaf9aa22f060d4f7c394241a54d9e82035ec108d0711d80aa0f4daddabae566f53ba919bddd973d6b11

    Download Submit

  • memory/2944-18-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2944-22-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2944-21-0x0000000000C40000-0x0000000000FB6000-memory.dmp

    Filesize

    3.5MB

    Download

  • memory/2944-19-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2944-12-0x0000000000C40000-0x0000000000FB6000-memory.dmp

    Filesize

    3.5MB

    Download

  • memory/5008-3-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/5008-16-0x0000000000BD0000-0x0000000000F46000-memory.dmp

    Filesize

    3.5MB

    Download

  • memory/5008-17-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/5008-11-0x0000000000BD0000-0x0000000000F46000-memory.dmp

    Filesize

    3.5MB

    Download

  • memory/5008-0-0x0000000000BD0000-0x0000000000F46000-memory.dmp

    Filesize

    3.5MB

    Download

  • memory/5008-2-0x0000000074DA0000-0x0000000075351000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/5008-1-0x0000000074DA2000-0x0000000074DA3000-memory.dmp

    Filesize

    4KB

    Download