Overview

overview

10

Static

static

41D2BC2F99...EB.exe

windows7_x64

10

41D2BC2F99...EB.exe

windows10_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    17-08-2021 22:26

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General

  • Target

    41D2BC2F99C931544191A407A64D93EB.exe

  • Size

    123KB

  • MD5

    41d2bc2f99c931544191a407a64d93eb

  • SHA1

    7773c4947f7f8e1b7e4c5a79a519ef0ef73c71f7

  • SHA256

    1e39e682bcc7bc56e68b22787bfd53e2346f67bd1dad4cc374b65a8e54b1b0e1

  • SHA512

    bab88c67972968c3fb0ac68f76044be812a49815ca081f548b945af3e765ae4ee42abfdb51ae3a851d83e01724ebaaa34de5091bec9424038d55ab6dd425cd19

Score
10/10
njratvictem newevasionpersistencesuricatatrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Victem New

C2

test0day.zapto.org:1919

Mutex

97c8dd348a81752049fc479a7db09101

Attributes
  • reg_key

    97c8dd348a81752049fc479a7db09101

  • 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
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 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). Likely ransomware behaviour.

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41D2BC2F99C931544191A407A64D93EB.exe
    "C:\Users\Admin\AppData\Local\Temp\41D2BC2F99C931544191A407A64D93EB.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Users\Admin\AppData\Local\Temp\Notpsd.exe
      "C:\Users\Admin\AppData\Local\Temp\Notpsd.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3832
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Notpsd.exe" "Notpsd.exe" ENABLE
        3⤵
          PID:2904

    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

    Impact

    Replay Monitor

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    Downloads

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

      41d2bc2f99c931544191a407a64d93eb

      SHA1

      7773c4947f7f8e1b7e4c5a79a519ef0ef73c71f7

      SHA256

      1e39e682bcc7bc56e68b22787bfd53e2346f67bd1dad4cc374b65a8e54b1b0e1

      SHA512

      bab88c67972968c3fb0ac68f76044be812a49815ca081f548b945af3e765ae4ee42abfdb51ae3a851d83e01724ebaaa34de5091bec9424038d55ab6dd425cd19

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

      41d2bc2f99c931544191a407a64d93eb

      SHA1

      7773c4947f7f8e1b7e4c5a79a519ef0ef73c71f7

      SHA256

      1e39e682bcc7bc56e68b22787bfd53e2346f67bd1dad4cc374b65a8e54b1b0e1

      SHA512

      bab88c67972968c3fb0ac68f76044be812a49815ca081f548b945af3e765ae4ee42abfdb51ae3a851d83e01724ebaaa34de5091bec9424038d55ab6dd425cd19

      Download Submit
    • memory/632-114-0x0000000000F00000-0x0000000000F01000-memory.dmp
      Filesize

      4KB

      Download
    • memory/2904-119-0x0000000000000000-mapping.dmp
      Download
    • memory/3832-115-0x0000000000000000-mapping.dmp
      Download
    • memory/3832-118-0x00000000024B0000-0x00000000024B1000-memory.dmp
      Filesize

      4KB

      Download