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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/01/2024, 18:22

General

  • Target

    63495c938c53f7d9fa71024ac479045d.exe

  • Size

    124KB

  • MD5

    63495c938c53f7d9fa71024ac479045d

  • SHA1

    6f3c331b43d0cba0b859cb49274b11afc0f73398

  • SHA256

    20fde3ceeab30299f1ec9ffee1d9314de41d59b7faaf1c4b2e64a58f507b3518

  • SHA512

    0a9445fcd7ce75129601c171479e1e683fbfaf01b0d05fdcb36428f657aaecbfe81973ec8eb32e88469e782108cc1308a17d5f6cdc9111e40f53fe5cc349ac4d

  • SSDEEP

    3072:0cIamlzZLkWwhsA6kjqIVwuup9T8pjy/W7:DNmlVLMhsA6k2I8XTGjy

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

11aabb.ddns.net:5552

Mutex

a5a8981207e642f9c714e6e4bd25fa08

Attributes
  • reg_key

    a5a8981207e642f9c714e6e4bd25fa08

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 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\63495c938c53f7d9fa71024ac479045d.exe
    "C:\Users\Admin\AppData\Local\Temp\63495c938c53f7d9fa71024ac479045d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Roaming\taskhost.exe
      "C:\Users\Admin\AppData\Roaming\taskhost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4000
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\taskhost.exe" "taskhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:3872

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    124KB

    MD5

    63495c938c53f7d9fa71024ac479045d

    SHA1

    6f3c331b43d0cba0b859cb49274b11afc0f73398

    SHA256

    20fde3ceeab30299f1ec9ffee1d9314de41d59b7faaf1c4b2e64a58f507b3518

    SHA512

    0a9445fcd7ce75129601c171479e1e683fbfaf01b0d05fdcb36428f657aaecbfe81973ec8eb32e88469e782108cc1308a17d5f6cdc9111e40f53fe5cc349ac4d

  • memory/4000-27-0x0000000002A10000-0x0000000002A20000-memory.dmp

    Filesize

    64KB

  • memory/4000-26-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4000-25-0x0000000002A10000-0x0000000002A20000-memory.dmp

    Filesize

    64KB

  • memory/4000-24-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4924-4-0x0000000007B60000-0x0000000008104000-memory.dmp

    Filesize

    5.6MB

  • memory/4924-6-0x0000000002860000-0x0000000002866000-memory.dmp

    Filesize

    24KB

  • memory/4924-7-0x0000000005180000-0x0000000005190000-memory.dmp

    Filesize

    64KB

  • memory/4924-9-0x0000000006490000-0x00000000064E6000-memory.dmp

    Filesize

    344KB

  • memory/4924-8-0x0000000006420000-0x000000000642A000-memory.dmp

    Filesize

    40KB

  • memory/4924-10-0x0000000007100000-0x000000000710C000-memory.dmp

    Filesize

    48KB

  • memory/4924-5-0x0000000007650000-0x00000000076E2000-memory.dmp

    Filesize

    584KB

  • memory/4924-0-0x00000000005F0000-0x0000000000616000-memory.dmp

    Filesize

    152KB

  • memory/4924-23-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/4924-3-0x0000000007510000-0x00000000075AC000-memory.dmp

    Filesize

    624KB

  • memory/4924-2-0x0000000004F50000-0x0000000004F82000-memory.dmp

    Filesize

    200KB

  • memory/4924-1-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB