Overview

overview

10

Static

static

10

65775c3bb4...4d.exe

windows7_x64

10

65775c3bb4...4d.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    164s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:39

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General

  • Target

    65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d.exe

  • Size

    31KB

  • MD5

    6955b2a45017c2222c4597114db081ff

  • SHA1

    372f7cda076acfe22f1b0dd7f83ae1c267a0f811

  • SHA256

    65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d

  • SHA512

    f00413f7545ab947acbb87bbcbaedc712e4923ee5bcb256730fddaad222680e4e5e19179cb9a841e3c8bad9677be00c10ac667967a833f719e36c03f07bd3441

Score
10/10
njratqevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

q

Mutex

2fddf94343dded05227b585c3a4e54e8

Attributes
  • reg_key

    2fddf94343dded05227b585c3a4e54e8

  • splitter

    Y262SUCZ4UJJ

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    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
  • 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d.exe
    "C:\Users\Admin\AppData\Local\Temp\65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3308
    • C:\Users\Admin\AppData\Roaming\WindowsServices.exe
      "C:\Users\Admin\AppData\Roaming\WindowsServices.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4024
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\WindowsServices.exe" "WindowsServices.exe" ENABLE
        3⤵
          PID:4132

    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

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\WindowsServices.exe
      Filesize

      31KB

      MD5

      6955b2a45017c2222c4597114db081ff

      SHA1

      372f7cda076acfe22f1b0dd7f83ae1c267a0f811

      SHA256

      65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d

      SHA512

      f00413f7545ab947acbb87bbcbaedc712e4923ee5bcb256730fddaad222680e4e5e19179cb9a841e3c8bad9677be00c10ac667967a833f719e36c03f07bd3441

      Download Submit
    • C:\Users\Admin\AppData\Roaming\WindowsServices.exe
      Filesize

      31KB

      MD5

      6955b2a45017c2222c4597114db081ff

      SHA1

      372f7cda076acfe22f1b0dd7f83ae1c267a0f811

      SHA256

      65775c3bb48b84b7d3cc49fe4dbda739721ee6a9bb401a5352c8ddaa30cbed4d

      SHA512

      f00413f7545ab947acbb87bbcbaedc712e4923ee5bcb256730fddaad222680e4e5e19179cb9a841e3c8bad9677be00c10ac667967a833f719e36c03f07bd3441

      Download Submit
    • memory/3308-130-0x00000000752D0000-0x0000000075881000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4024-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4024-134-0x00000000752D0000-0x0000000075881000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4132-135-0x0000000000000000-mapping.dmp
      Download