Overview

overview

10

Static

static

10

HEUR-Troja...0e.exe

windows7-x64

10

HEUR-Troja...0e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    166s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-09-2022 17:42

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    HEUR-Trojan.Win32.Generic-3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e.exe

  • Size

    37KB

  • MD5

    5c0e12b00990af8e6a82dee0c0e09d95

  • SHA1

    cf2be3ad4715d73a3d55c26f8eb972de163b255d

  • SHA256

    3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e

  • SHA512

    2cc6d4a725e1b21d1c0e7108c7103b17d6150add109bf4d3ce964e00210c3d7880b660c6a57e9c5695316fb60490328acc252232b63196cf76598c76b70c2ed2

  • SSDEEP

    384:BcOmK3hUidksXR21cGMy8PIU5fHkFlacPZrAF+rMRTyN/0L+EcoinblneHQM3epY:6OmK3bLGv8PIU58KcBrM+rMRa8NubGt

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

192.168.0.161:2478

Mutex

0a477f3e02d48d76a648160656e258c9

Attributes
  • reg_key

    0a477f3e02d48d76a648160656e258c9

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 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
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs 3 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.Generic-3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e.exe
    "C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.Win32.Generic-3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\Runtime Broker.exe
      "C:\Windows\Runtime Broker.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops autorun.inf file
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3880
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Runtime Broker.exe" "Runtime Broker.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4520
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM Avast.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\Runtime Broker.exe
    Filesize

    37KB

    MD5

    5c0e12b00990af8e6a82dee0c0e09d95

    SHA1

    cf2be3ad4715d73a3d55c26f8eb972de163b255d

    SHA256

    3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e

    SHA512

    2cc6d4a725e1b21d1c0e7108c7103b17d6150add109bf4d3ce964e00210c3d7880b660c6a57e9c5695316fb60490328acc252232b63196cf76598c76b70c2ed2

    Download Submit
  • C:\Windows\Runtime Broker.exe
    Filesize

    37KB

    MD5

    5c0e12b00990af8e6a82dee0c0e09d95

    SHA1

    cf2be3ad4715d73a3d55c26f8eb972de163b255d

    SHA256

    3424a8c9c995896f9d6fe3bb4a164d0d8675a781f9f9c32286a5472ce8e9e50e

    SHA512

    2cc6d4a725e1b21d1c0e7108c7103b17d6150add109bf4d3ce964e00210c3d7880b660c6a57e9c5695316fb60490328acc252232b63196cf76598c76b70c2ed2

    Download Submit
  • memory/932-141-0x0000000000000000-mapping.dmp
    Download
  • memory/1336-132-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1336-133-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1336-138-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3880-134-0x0000000000000000-mapping.dmp
    Download
  • memory/3880-137-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3880-140-0x00000000752E0000-0x0000000075891000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4520-139-0x0000000000000000-mapping.dmp
    Download