Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-02-2024 21:41

General

  • Target

    021b477ace5e87113272fd8b16830051.exe

  • Size

    184KB

  • MD5

    021b477ace5e87113272fd8b16830051

  • SHA1

    d55ddb61b67e53245adc5bd12822ea56f1602820

  • SHA256

    e31f4f05884e97c569d6641257f40c4634004565874178c122817538e89948bd

  • SHA512

    ef8c8ff1ff3326848becef2615bd2a629dd1eced13c9b9776d75f3a5cfd2e913324422f806264126befdd0d6908d16be081218ab61fe20ef95111cf9a41c8817

  • SSDEEP

    3072:qUZiBJUB7JXbbkiTIR4JQffGaJNnN7SD+631zmh6Ty1:hiBWBdbkiTIR4ufGaJNnN7SC631zmh6+

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

18.ip.gl.ply.gg:43389

Mutex

4ac5522ba6619835b9ac056e603570c4

Attributes
  • reg_key

    4ac5522ba6619835b9ac056e603570c4

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\021b477ace5e87113272fd8b16830051.exe
    "C:\Users\Admin\AppData\Local\Temp\021b477ace5e87113272fd8b16830051.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4456
    • C:\Users\Admin\AppData\Local\Temp\021b477ace5e87113272fd8b16830051.exe
      C:\Users\Admin\AppData\Local\Temp\021b477ace5e87113272fd8b16830051.exe
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4612
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1036
        • C:\Users\Admin\AppData\Local\Temp\server.exe
          C:\Users\Admin\AppData\Local\Temp\server.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1252
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:3348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\021b477ace5e87113272fd8b16830051.exe.log

    Filesize

    224B

    MD5

    9c4b66f77f12558c48b620ddfb44029d

    SHA1

    446651db643b943ec37b9b3599655e211a4bc73e

    SHA256

    42f723d18283fda6a0904046cc29ee8d10e562d20c7615259a46ae9c0e4c9708

    SHA512

    983aed0ec15a79b716ac6dc080146e4ed098c117c31167053fb5971649dc621d1db5292fdd76f3010f094b75d57ea0bdb35bc829c6ba37e4d276b266361dee8e

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

    Filesize

    184KB

    MD5

    021b477ace5e87113272fd8b16830051

    SHA1

    d55ddb61b67e53245adc5bd12822ea56f1602820

    SHA256

    e31f4f05884e97c569d6641257f40c4634004565874178c122817538e89948bd

    SHA512

    ef8c8ff1ff3326848becef2615bd2a629dd1eced13c9b9776d75f3a5cfd2e913324422f806264126befdd0d6908d16be081218ab61fe20ef95111cf9a41c8817

  • memory/1036-30-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/1036-22-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/1036-23-0x0000000000E80000-0x0000000000E90000-memory.dmp

    Filesize

    64KB

  • memory/1036-24-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/1252-34-0x0000000000F90000-0x0000000000FA0000-memory.dmp

    Filesize

    64KB

  • memory/1252-33-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/1252-32-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/1252-31-0x0000000000F90000-0x0000000000FA0000-memory.dmp

    Filesize

    64KB

  • memory/1252-29-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4456-0-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4456-2-0x0000000001430000-0x0000000001440000-memory.dmp

    Filesize

    64KB

  • memory/4456-7-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4456-1-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4612-8-0x0000000001240000-0x0000000001250000-memory.dmp

    Filesize

    64KB

  • memory/4612-21-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4612-9-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB

  • memory/4612-3-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/4612-6-0x00000000751E0000-0x0000000075791000-memory.dmp

    Filesize

    5.7MB