Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-02-2024 06:23

General

  • Target

    a5a5d0e078a7feb6350da38665d948ae.exe

  • Size

    235KB

  • MD5

    a5a5d0e078a7feb6350da38665d948ae

  • SHA1

    8ca1f4a981b997f4cbc3c04e4d492d436cf4d87d

  • SHA256

    36965eced5d426883f047d0118a88999a36f9012455b97b8d58dfcb59a3f3fc8

  • SHA512

    ff8871672a9b8e7d691d05d5d8266a3e3be9aacc714bda2d1f03ce06983b039e0c31275fb8c4e57a03574c29506e6f446b46adbc8a1c27fa19e7522e51fff2f0

  • SSDEEP

    3072:mbSXpN/hC32GhNvKNqWzWofP8qJ0O0ysPfBOm/wPewqo7L+V3/CjtS+XO+j7EE9E:IMpTQ2GhNS8unJ0BlBpI2w83oSB+NBK

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

amerkad19.ddns.net:1177

Mutex

db2108a13871ca4786c6f5eb2f775bc8

Attributes
  • reg_key

    db2108a13871ca4786c6f5eb2f775bc8

  • 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 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5a5d0e078a7feb6350da38665d948ae.exe
    "C:\Users\Admin\AppData\Local\Temp\a5a5d0e078a7feb6350da38665d948ae.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:3344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svchost.exe

    Filesize

    235KB

    MD5

    a5a5d0e078a7feb6350da38665d948ae

    SHA1

    8ca1f4a981b997f4cbc3c04e4d492d436cf4d87d

    SHA256

    36965eced5d426883f047d0118a88999a36f9012455b97b8d58dfcb59a3f3fc8

    SHA512

    ff8871672a9b8e7d691d05d5d8266a3e3be9aacc714bda2d1f03ce06983b039e0c31275fb8c4e57a03574c29506e6f446b46adbc8a1c27fa19e7522e51fff2f0

  • memory/2260-24-0x0000000074F60000-0x0000000075710000-memory.dmp

    Filesize

    7.7MB

  • memory/2260-22-0x0000000074F60000-0x0000000075710000-memory.dmp

    Filesize

    7.7MB

  • memory/2632-6-0x0000000005450000-0x000000000545A000-memory.dmp

    Filesize

    40KB

  • memory/2632-4-0x00000000054D0000-0x000000000556C000-memory.dmp

    Filesize

    624KB

  • memory/2632-5-0x0000000005360000-0x0000000005370000-memory.dmp

    Filesize

    64KB

  • memory/2632-0-0x0000000000950000-0x0000000000992000-memory.dmp

    Filesize

    264KB

  • memory/2632-7-0x0000000005660000-0x0000000005682000-memory.dmp

    Filesize

    136KB

  • memory/2632-8-0x0000000005360000-0x0000000005370000-memory.dmp

    Filesize

    64KB

  • memory/2632-9-0x0000000008870000-0x000000000887C000-memory.dmp

    Filesize

    48KB

  • memory/2632-3-0x0000000005390000-0x0000000005422000-memory.dmp

    Filesize

    584KB

  • memory/2632-2-0x0000000005860000-0x0000000005E04000-memory.dmp

    Filesize

    5.6MB

  • memory/2632-23-0x0000000074F60000-0x0000000075710000-memory.dmp

    Filesize

    7.7MB

  • memory/2632-1-0x0000000074F60000-0x0000000075710000-memory.dmp

    Filesize

    7.7MB