Overview

overview

10

Static

static

10

NewStub.exe

windows7_x64

10

NewStub.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    03-10-2021 22:12

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    NewStub.exe

  • Size

    36KB

  • MD5

    ae0911261255e0743dcecc6c3245abdf

  • SHA1

    c9c6abfc195be44d02e8a79361821ff8d5e1b1c1

  • SHA256

    84f5ec233777bbb8beff694828b95279e0167d48b2cfdd9f1f9385c6fdfdcc3d

  • SHA512

    730ed33b1a196f05746aeb44edce872c2b9a2d2ebfd0e3fa86864eadf6d08899497d01b6c225ba1344a579b1dfb5087fe5f7ca0f13f089bb3aaed7c1bb95f004

Score
10/10
njrathackedevasionpersistencesuricatatrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

Mutex

e99e462d99ad204bdf7d672852a4e30a

Attributes
  • reg_key

    e99e462d99ad204bdf7d672852a4e30a

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)

    suricata
  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Microphone)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Microphone)

    suricata
  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)

    suricata
  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)

    suricata
  • suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)

    suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)

    suricata
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 31 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NewStub.exe
    "C:\Users\Admin\AppData\Local\Temp\NewStub.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1684
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\svchost.exe" "svchost.exe" ENABLE
        3⤵
          PID:672

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    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

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Web Service

    1
    T1102

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      MD5

      ae0911261255e0743dcecc6c3245abdf

      SHA1

      c9c6abfc195be44d02e8a79361821ff8d5e1b1c1

      SHA256

      84f5ec233777bbb8beff694828b95279e0167d48b2cfdd9f1f9385c6fdfdcc3d

      SHA512

      730ed33b1a196f05746aeb44edce872c2b9a2d2ebfd0e3fa86864eadf6d08899497d01b6c225ba1344a579b1dfb5087fe5f7ca0f13f089bb3aaed7c1bb95f004

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      MD5

      ae0911261255e0743dcecc6c3245abdf

      SHA1

      c9c6abfc195be44d02e8a79361821ff8d5e1b1c1

      SHA256

      84f5ec233777bbb8beff694828b95279e0167d48b2cfdd9f1f9385c6fdfdcc3d

      SHA512

      730ed33b1a196f05746aeb44edce872c2b9a2d2ebfd0e3fa86864eadf6d08899497d01b6c225ba1344a579b1dfb5087fe5f7ca0f13f089bb3aaed7c1bb95f004

      Download Submit
    • \Users\Admin\AppData\Local\Temp\svchost.exe
      MD5

      ae0911261255e0743dcecc6c3245abdf

      SHA1

      c9c6abfc195be44d02e8a79361821ff8d5e1b1c1

      SHA256

      84f5ec233777bbb8beff694828b95279e0167d48b2cfdd9f1f9385c6fdfdcc3d

      SHA512

      730ed33b1a196f05746aeb44edce872c2b9a2d2ebfd0e3fa86864eadf6d08899497d01b6c225ba1344a579b1dfb5087fe5f7ca0f13f089bb3aaed7c1bb95f004

      Download Submit
    • memory/672-61-0x0000000000000000-mapping.dmp
      Download
    • memory/1272-53-0x00000000767F1000-0x00000000767F3000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1272-54-0x0000000000560000-0x0000000000561000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1684-56-0x0000000000000000-mapping.dmp
      Download
    • memory/1684-60-0x0000000000C30000-0x0000000000C31000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1684-63-0x0000000000C31000-0x0000000000C32000-memory.dmp
      Filesize

      4KB

      Download
    • memory/1684-64-0x0000000000C36000-0x0000000000C47000-memory.dmp
      Filesize

      68KB

      Download