Overview

overview

10

Static

static

10

assasasa.exe

windows10-ltsc 2021-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    31-10-2024 21:56

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General

  • Target

    assasasa.exe

  • Size

    287KB

  • MD5

    11ea1c7e0deea44c82127cd46f47a074

  • SHA1

    005849c2f425a844b23c27a9079347e037e588fd

  • SHA256

    fceda118c3aef32d1d7ba4682b75cd9b81423544b820f02acbb6e99f10eb5813

  • SHA512

    5296be8822283f6ffc1c6168b1c2d85907b24f6e1127c77125cc522744c5249a77c45715f5e16b914e9bea2580d0e5a3a3e613ddaa2532713e9a66fbd93905e4

  • SSDEEP

    3072:SC8w0v2QAsSdADRq6ty71wtYM77ldY7AXTp2kA:guwH77Ppj0kA

Score
10/10
njratdiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

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
  • 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 use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\assasasa.exe
    "C:\Users\Admin\AppData\Local\Temp\assasasa.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3768
    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2372
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Chrome.exe" "Chrome.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2876

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\Local\Temp\Chrome.exe
    Filesize

    287KB

    MD5

    11ea1c7e0deea44c82127cd46f47a074

    SHA1

    005849c2f425a844b23c27a9079347e037e588fd

    SHA256

    fceda118c3aef32d1d7ba4682b75cd9b81423544b820f02acbb6e99f10eb5813

    SHA512

    5296be8822283f6ffc1c6168b1c2d85907b24f6e1127c77125cc522744c5249a77c45715f5e16b914e9bea2580d0e5a3a3e613ddaa2532713e9a66fbd93905e4

    Download Submit

  • memory/2372-16-0x00000000750E0000-0x0000000075691000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2372-17-0x00000000750E0000-0x0000000075691000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3768-0-0x00000000750E2000-0x00000000750E3000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3768-1-0x00000000750E0000-0x0000000075691000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3768-2-0x00000000750E0000-0x0000000075691000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3768-15-0x00000000750E0000-0x0000000075691000-memory.dmp

    Filesize

    5.7MB

    Download