Overview

overview

10

Static

static

10

3e6bf2ed29...57.exe

windows7_x64

10

3e6bf2ed29...57.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 21:46

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General

  • Target

    3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557.exe

  • Size

    31KB

  • MD5

    b9412ac91308dfef4b8534d10afa539c

  • SHA1

    22da93e17b6c98cc7dd6d094e62702a2bed9daeb

  • SHA256

    3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557

  • SHA512

    027ee26492004236a369534c9cf62b167aa3b2c5d9d4f152d6ed9aa8a9e925dfbdbfb474593380aa41de2da0fc7e79be326455e78ce4783457890ef68383617d

Score
10/10
njrattestevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

test

C2

127.0.0.1:6522

Mutex

f5d1e9d41a2507cc16417a9a6cdc15f7

Attributes
  • reg_key

    f5d1e9d41a2507cc16417a9a6cdc15f7

  • 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 behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557.exe
    "C:\Users\Admin\AppData\Local\Temp\3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Users\Admin\AppData\Local\Temp\1YNFREE.exe
      "C:\Users\Admin\AppData\Local\Temp\1YNFREE.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2544
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\1YNFREE.exe" "1YNFREE.exe" ENABLE
        3⤵
          PID:1060

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\1YNFREE.exe
      Filesize

      31KB

      MD5

      b9412ac91308dfef4b8534d10afa539c

      SHA1

      22da93e17b6c98cc7dd6d094e62702a2bed9daeb

      SHA256

      3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557

      SHA512

      027ee26492004236a369534c9cf62b167aa3b2c5d9d4f152d6ed9aa8a9e925dfbdbfb474593380aa41de2da0fc7e79be326455e78ce4783457890ef68383617d

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\1YNFREE.exe
      Filesize

      31KB

      MD5

      b9412ac91308dfef4b8534d10afa539c

      SHA1

      22da93e17b6c98cc7dd6d094e62702a2bed9daeb

      SHA256

      3e6bf2ed299efa3d61382560eddd264f0b3590f1772b8fe4890d20b842916557

      SHA512

      027ee26492004236a369534c9cf62b167aa3b2c5d9d4f152d6ed9aa8a9e925dfbdbfb474593380aa41de2da0fc7e79be326455e78ce4783457890ef68383617d

      Download Submit

    • memory/1060-135-0x0000000000000000-mapping.dmp

      Download

    • memory/2068-130-0x00000000752A0000-0x0000000075851000-memory.dmp

      Filesize

      5.7MB

      Download

    • memory/2544-131-0x0000000000000000-mapping.dmp

      Download

    • memory/2544-134-0x00000000752A0000-0x0000000075851000-memory.dmp

      Filesize

      5.7MB

      Download