Overview

overview

10

Static

static

10

aeb242a8f4...55.exe

windows7_x64

10

aeb242a8f4...55.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-12-2021 09:17

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General

  • Target

    aeb242a8f4b10dde2b9012e312f00955.exe

  • Size

    368KB

  • MD5

    aeb242a8f4b10dde2b9012e312f00955

  • SHA1

    e4517b996a6e4ef077b952dd9bfbb2e70c1cba8e

  • SHA256

    e72b7749fccfc2e3181f99d9c92bdca8080de4cb1f09c8c8423c60a3d41f5993

  • SHA512

    3301efbd05381314f9fcd412524676776c6805678070ddee8b5e934a0e72da994c25278361ef386380cc089416cdea1f1a2abf3ef4b14f2106300db1ec15fcb3

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

8.tcp.ngrok.io:12312

Mutex

4a0fa237240fa8f6245602cce20e810d

Attributes
  • reg_key

    4a0fa237240fa8f6245602cce20e810d

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • 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
  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • 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 34 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aeb242a8f4b10dde2b9012e312f00955.exe
    "C:\Users\Admin\AppData\Local\Temp\aeb242a8f4b10dde2b9012e312f00955.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Users\Admin\AppData\Local\Temp\systeam.exe
      "C:\Users\Admin\AppData\Local\Temp\systeam.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:1148
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\systeam.exe" "systeam.exe" ENABLE
        3⤵
          PID:1464
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /IM Exsample.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1056

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      aeb242a8f4b10dde2b9012e312f00955

      SHA1

      e4517b996a6e4ef077b952dd9bfbb2e70c1cba8e

      SHA256

      e72b7749fccfc2e3181f99d9c92bdca8080de4cb1f09c8c8423c60a3d41f5993

      SHA512

      3301efbd05381314f9fcd412524676776c6805678070ddee8b5e934a0e72da994c25278361ef386380cc089416cdea1f1a2abf3ef4b14f2106300db1ec15fcb3

      Download Submit

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

      aeb242a8f4b10dde2b9012e312f00955

      SHA1

      e4517b996a6e4ef077b952dd9bfbb2e70c1cba8e

      SHA256

      e72b7749fccfc2e3181f99d9c92bdca8080de4cb1f09c8c8423c60a3d41f5993

      SHA512

      3301efbd05381314f9fcd412524676776c6805678070ddee8b5e934a0e72da994c25278361ef386380cc089416cdea1f1a2abf3ef4b14f2106300db1ec15fcb3

      Download Submit

    • \Users\Admin\AppData\Local\Temp\systeam.exe
      MD5

      aeb242a8f4b10dde2b9012e312f00955

      SHA1

      e4517b996a6e4ef077b952dd9bfbb2e70c1cba8e

      SHA256

      e72b7749fccfc2e3181f99d9c92bdca8080de4cb1f09c8c8423c60a3d41f5993

      SHA512

      3301efbd05381314f9fcd412524676776c6805678070ddee8b5e934a0e72da994c25278361ef386380cc089416cdea1f1a2abf3ef4b14f2106300db1ec15fcb3

      Download Submit

    • memory/1056-63-0x0000000000000000-mapping.dmp

      Download

    • memory/1148-57-0x0000000000000000-mapping.dmp

      Download

    • memory/1148-61-0x0000000002000000-0x0000000002001000-memory.dmp

      Filesize

      4KB

      Download

    • memory/1464-62-0x0000000000000000-mapping.dmp

      Download

    • memory/1632-54-0x0000000076141000-0x0000000076143000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1632-55-0x0000000000A70000-0x0000000000A71000-memory.dmp

      Filesize

      4KB

      Download