Overview

overview

10

Static

static

10

sibmne.exe

windows7_x64

10

sibmne.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    06-07-2022 05:15

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General

  • Target

    sibmne.exe

  • Size

    31KB

  • MD5

    b92b3115473d465d03d54ed3a2a7defa

  • SHA1

    6e11bb60d8c01aa6032e927acdcec335b2181007

  • SHA256

    d4ffb7e8cefcf9db3e3a8771b05ee02c4f6235a8c13677217a8a49e5cf2dc8bd

  • SHA512

    be339251a191bad40a2f7a7e013b717dae439ffa0d9328da5d0fb44ce7659e390fa943b61fceb20ad6bb7e3ee349e4a35f29e548c3b23d96024fdeb4822f6aef

Score
10/10
njratmybot32evasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot32

C2

4.tcp.eu.ngrok.io:4542

Mutex

60ba8fa2947818e6663b2c1251a2ccd2

Attributes
  • reg_key

    60ba8fa2947818e6663b2c1251a2ccd2

  • splitter

    Y262SUCZ4UJJ

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    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 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sibmne.exe
    "C:\Users\Admin\AppData\Local\Temp\sibmne.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2832
    • C:\Users\Admin\AppData\Roaming\Bluetooth.exe
      "C:\Users\Admin\AppData\Roaming\Bluetooth.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4300
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Bluetooth.exe" "Bluetooth.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4168

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\Bluetooth.exe
    Filesize

    31KB

    MD5

    b92b3115473d465d03d54ed3a2a7defa

    SHA1

    6e11bb60d8c01aa6032e927acdcec335b2181007

    SHA256

    d4ffb7e8cefcf9db3e3a8771b05ee02c4f6235a8c13677217a8a49e5cf2dc8bd

    SHA512

    be339251a191bad40a2f7a7e013b717dae439ffa0d9328da5d0fb44ce7659e390fa943b61fceb20ad6bb7e3ee349e4a35f29e548c3b23d96024fdeb4822f6aef

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

    31KB

    MD5

    b92b3115473d465d03d54ed3a2a7defa

    SHA1

    6e11bb60d8c01aa6032e927acdcec335b2181007

    SHA256

    d4ffb7e8cefcf9db3e3a8771b05ee02c4f6235a8c13677217a8a49e5cf2dc8bd

    SHA512

    be339251a191bad40a2f7a7e013b717dae439ffa0d9328da5d0fb44ce7659e390fa943b61fceb20ad6bb7e3ee349e4a35f29e548c3b23d96024fdeb4822f6aef

    Download Submit
  • memory/2832-130-0x00000000750A0000-0x0000000075651000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2832-134-0x00000000750A0000-0x0000000075651000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4168-136-0x0000000000000000-mapping.dmp
    Download
  • memory/4300-131-0x0000000000000000-mapping.dmp
    Download
  • memory/4300-135-0x00000000750A0000-0x0000000075651000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4300-137-0x00000000750A0000-0x0000000075651000-memory.dmp
    Filesize

    5.7MB

    Download