Overview

overview

10

Static

static

10

756b5288c2...25.exe

windows7_x64

10

756b5288c2...25.exe

windows10_x64

10

Analysis

  • max time kernel
    153s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    20-12-2021 08:48

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General

  • Target

    756b5288c29c75f8a689cf1010ddbe25.exe

  • Size

    37KB

  • MD5

    756b5288c29c75f8a689cf1010ddbe25

  • SHA1

    6b0f81673af9c4bb6dc6f7fd275679ebfa46a756

  • SHA256

    b166e1947e977864e55349d8358197927a7f7ee707ddf46acf027b7cf109bf98

  • SHA512

    a515d02bda13ea9b06287a5a73cf08aef0d9907a1800cede4f3e314597264475ceccaa3f4e3c0fe769aaef0ee6f52d1cf1dbb98a80a22a83cd0582159311df8e

Score
10/10
njratpidorevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

pidor

C2

8.tcp.ngrok.io:12086:12086

Mutex

1b6ef007d35ce987ac4dec265faa179b

Attributes
  • reg_key

    1b6ef007d35ce987ac4dec265faa179b

  • 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
  • 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.

  • Drops file in Windows directory 3 IoCs
  • 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\756b5288c29c75f8a689cf1010ddbe25.exe
    "C:\Users\Admin\AppData\Local\Temp\756b5288c29c75f8a689cf1010ddbe25.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:3440
    • C:\Windows\svchost.exe
      "C:\Windows\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\svchost.exe" "svchost.exe" ENABLE
        3⤵
          PID:4004
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /IM Exsample.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2528

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\svchost.exe
      MD5

      756b5288c29c75f8a689cf1010ddbe25

      SHA1

      6b0f81673af9c4bb6dc6f7fd275679ebfa46a756

      SHA256

      b166e1947e977864e55349d8358197927a7f7ee707ddf46acf027b7cf109bf98

      SHA512

      a515d02bda13ea9b06287a5a73cf08aef0d9907a1800cede4f3e314597264475ceccaa3f4e3c0fe769aaef0ee6f52d1cf1dbb98a80a22a83cd0582159311df8e

      Download Submit

    • C:\Windows\svchost.exe
      MD5

      756b5288c29c75f8a689cf1010ddbe25

      SHA1

      6b0f81673af9c4bb6dc6f7fd275679ebfa46a756

      SHA256

      b166e1947e977864e55349d8358197927a7f7ee707ddf46acf027b7cf109bf98

      SHA512

      a515d02bda13ea9b06287a5a73cf08aef0d9907a1800cede4f3e314597264475ceccaa3f4e3c0fe769aaef0ee6f52d1cf1dbb98a80a22a83cd0582159311df8e

      Download Submit

    • memory/2528-121-0x0000000000000000-mapping.dmp

      Download

    • memory/3440-115-0x0000000002AA0000-0x0000000002AA1000-memory.dmp

      Filesize

      4KB

      Download

    • memory/4004-120-0x0000000000000000-mapping.dmp

      Download

    • memory/4056-116-0x0000000000000000-mapping.dmp

      Download

    • memory/4056-119-0x0000000003801000-0x0000000003802000-memory.dmp

      Filesize

      4KB

      Download