Overview

overview

10

Static

static

10

5bc61eac59...ab.exe

windows7_x64

10

5bc61eac59...ab.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:01

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General

  • Target

    5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab.exe

  • Size

    37KB

  • MD5

    94d375e6fd23e82da61417bcdbd3c50a

  • SHA1

    e3395b38c627551f3100e2c42854ee50dfab9af2

  • SHA256

    5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab

  • SHA512

    a4c24474972d0457830266173bdae4cb15a1045997f3f313297899ad568f0e7e16fdd07eb2607f11f041ec751fda97fc9480fa5232e689551c6b1de705afccb1

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

188.163.97.125:21

Mutex

a9e76bee46dc0a4e93b0f47bb4fdbb28

Attributes
  • reg_key

    a9e76bee46dc0a4e93b0f47bb4fdbb28

  • splitter

    |'|'|

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
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab.exe
    "C:\Users\Admin\AppData\Local\Temp\5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\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:3612
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
          PID:4164

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    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

    Replication Through Removable Media

    1
    T1091

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\server.exe
      Filesize

      37KB

      MD5

      94d375e6fd23e82da61417bcdbd3c50a

      SHA1

      e3395b38c627551f3100e2c42854ee50dfab9af2

      SHA256

      5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab

      SHA512

      a4c24474972d0457830266173bdae4cb15a1045997f3f313297899ad568f0e7e16fdd07eb2607f11f041ec751fda97fc9480fa5232e689551c6b1de705afccb1

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

      37KB

      MD5

      94d375e6fd23e82da61417bcdbd3c50a

      SHA1

      e3395b38c627551f3100e2c42854ee50dfab9af2

      SHA256

      5bc61eac5924ae54482ad0cf13de3d954c204acf40675b68ec9f34a58987b3ab

      SHA512

      a4c24474972d0457830266173bdae4cb15a1045997f3f313297899ad568f0e7e16fdd07eb2607f11f041ec751fda97fc9480fa5232e689551c6b1de705afccb1

      Download Submit
    • memory/2644-130-0x0000000074B30000-0x00000000750E1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3612-131-0x0000000000000000-mapping.dmp
      Download
    • memory/3612-134-0x0000000074B30000-0x00000000750E1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4164-135-0x0000000000000000-mapping.dmp
      Download