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Overview

overview

10

Static

static

10

a84f13afc6...67.exe

windows7-x64

10

a84f13afc6...67.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    05/01/2023, 10:36

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General

  • Target

    a84f13afc66598bc51a2a5fa77633a67.exe

  • Size

    37KB

  • MD5

    a84f13afc66598bc51a2a5fa77633a67

  • SHA1

    188de3787a2ef16e57062ab794920f9d3957e4f5

  • SHA256

    d854634ea4a92c5775d1edaf805c7a754d45e8e568bcda853ddcbde2b891a8e3

  • SHA512

    045bd70f7de1d604b3f5fee700658ffe8347b09e2437e16652c0f58078e33a148750a59f581b043fc190bb63e4a8217340f26e476a211b2d6aea741cba416d06

  • SSDEEP

    384:i8KvEiTbHvpWNcZ0y8f7CTvvrdLkCwE3rAF+rMRTyN/0L+EcoinblneHQM3epzXg:dKXTZ38f7CTvpFwKrM+rMRa8NusTt

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

6.tcp.eu.ngrok.io:11553

Mutex

99c4d82f0922d38c6f975842331ad8f5

Attributes
  • reg_key

    99c4d82f0922d38c6f975842331ad8f5

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 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.

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a84f13afc66598bc51a2a5fa77633a67.exe
    "C:\Users\Admin\AppData\Local\Temp\a84f13afc66598bc51a2a5fa77633a67.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1488
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM Exsample.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1444

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    37KB

    MD5

    a84f13afc66598bc51a2a5fa77633a67

    SHA1

    188de3787a2ef16e57062ab794920f9d3957e4f5

    SHA256

    d854634ea4a92c5775d1edaf805c7a754d45e8e568bcda853ddcbde2b891a8e3

    SHA512

    045bd70f7de1d604b3f5fee700658ffe8347b09e2437e16652c0f58078e33a148750a59f581b043fc190bb63e4a8217340f26e476a211b2d6aea741cba416d06

    Download Submit

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

    37KB

    MD5

    a84f13afc66598bc51a2a5fa77633a67

    SHA1

    188de3787a2ef16e57062ab794920f9d3957e4f5

    SHA256

    d854634ea4a92c5775d1edaf805c7a754d45e8e568bcda853ddcbde2b891a8e3

    SHA512

    045bd70f7de1d604b3f5fee700658ffe8347b09e2437e16652c0f58078e33a148750a59f581b043fc190bb63e4a8217340f26e476a211b2d6aea741cba416d06

    Download Submit

  • \Users\Admin\AppData\Local\Temp\server.exe
    Filesize

    37KB

    MD5

    a84f13afc66598bc51a2a5fa77633a67

    SHA1

    188de3787a2ef16e57062ab794920f9d3957e4f5

    SHA256

    d854634ea4a92c5775d1edaf805c7a754d45e8e568bcda853ddcbde2b891a8e3

    SHA512

    045bd70f7de1d604b3f5fee700658ffe8347b09e2437e16652c0f58078e33a148750a59f581b043fc190bb63e4a8217340f26e476a211b2d6aea741cba416d06

    Download Submit

  • memory/856-62-0x0000000074E00000-0x00000000753AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/856-66-0x0000000074E00000-0x00000000753AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1800-54-0x00000000760D1000-0x00000000760D3000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1800-55-0x0000000074E00000-0x00000000753AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/1800-61-0x0000000074E00000-0x00000000753AB000-memory.dmp

    Filesize

    5.7MB

    Download