Overview

overview

10

Static

static

10

677b2f3d42...dN.exe

windows7-x64

10

677b2f3d42...dN.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    120s
  • max time network
    116s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-01-2025 01:25

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General

  • Target

    677b2f3d4275232db4c9a7e86a96598f640a540224e03fd7a89075cfabbea37dN.exe

  • Size

    51KB

  • MD5

    e3f19a6d4a100b9cc3e59f7974e352d0

  • SHA1

    d12880e3a383f2fb530015fbf8b23f3b3d8e9cd4

  • SHA256

    677b2f3d4275232db4c9a7e86a96598f640a540224e03fd7a89075cfabbea37d

  • SHA512

    2096527f199524b5baad0f2b91b5d9dd30827e691f28152b60065e6a21d504a2bfba3fa929a26c66b869a15d783066e8f4c418093c3784c5fda6835cec64e5a5

  • SSDEEP

    768:uFN5WpszMFsmjv0yrM+rMRa8NuLatrNgpWO:uFN5W+AFsmjst+gRJNEQu

Score
10/10
njratpisundiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Pisun

C2

192.168.8.1:2192

Mutex

4f17247515ce6a71ea4fca5b97bbccaa

Attributes
  • reg_key

    4f17247515ce6a71ea4fca5b97bbccaa

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • 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
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • 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 WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\677b2f3d4275232db4c9a7e86a96598f640a540224e03fd7a89075cfabbea37dN.exe
    "C:\Users\Admin\AppData\Local\Temp\677b2f3d4275232db4c9a7e86a96598f640a540224e03fd7a89075cfabbea37dN.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2988
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

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

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\server.exe
    Filesize

    51KB

    MD5

    e3f19a6d4a100b9cc3e59f7974e352d0

    SHA1

    d12880e3a383f2fb530015fbf8b23f3b3d8e9cd4

    SHA256

    677b2f3d4275232db4c9a7e86a96598f640a540224e03fd7a89075cfabbea37d

    SHA512

    2096527f199524b5baad0f2b91b5d9dd30827e691f28152b60065e6a21d504a2bfba3fa929a26c66b869a15d783066e8f4c418093c3784c5fda6835cec64e5a5

    Download Submit

  • memory/2420-0-0x00000000746C1000-0x00000000746C2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2420-1-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2420-2-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2420-15-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2988-13-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2988-14-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2988-25-0x00000000746C0000-0x0000000074C6B000-memory.dmp

    Filesize

    5.7MB

    Download