Analysis

  • max time kernel
    149s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2023 21:00

General

  • Target

    9d64f21e7d6558fe3156a419b9a4647f.exe

  • Size

    204KB

  • MD5

    9d64f21e7d6558fe3156a419b9a4647f

  • SHA1

    bd0390ae8acfecfdb09a4c65afd5125c16e90de8

  • SHA256

    f19d3649f2bbef5a4f801af5e3f4a475793ec97460fff1fdae3716b0235d6eed

  • SHA512

    236c9631bb379195ff9407d059bb89fb70ba4112969c417c76d42a3676dc04e417680e429f2865c0c8608b709305555c7b3c31da116478bd2c9ba7a5688ac00b

  • SSDEEP

    3072:NJveA674eGXSmGchlDEtND/zYe5eKSUBz0q7dNUEqu4yaLtrrhCv88SHHZ6TfFQK:NdvHeGX6gwD7HzSj2m9uxaBhV9dzt

Malware Config

Extracted

Family

njrat

Version

Blue

Botnet

Hacker

C2

honma123.codns.com:8080

Mutex

98eb9f39a26282e8eb7fd7824affdb3a

Attributes
  • reg_key

    98eb9f39a26282e8eb7fd7824affdb3a

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 25 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9d64f21e7d6558fe3156a419b9a4647f.exe
    "C:\Users\Admin\AppData\Local\Temp\9d64f21e7d6558fe3156a419b9a4647f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Users\Admin\AppData\Local\svchost.exe
      "C:\Users\Admin\AppData\Local\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\svchost.exe" "svchost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2056

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\svchost.exe
    Filesize

    204KB

    MD5

    9d64f21e7d6558fe3156a419b9a4647f

    SHA1

    bd0390ae8acfecfdb09a4c65afd5125c16e90de8

    SHA256

    f19d3649f2bbef5a4f801af5e3f4a475793ec97460fff1fdae3716b0235d6eed

    SHA512

    236c9631bb379195ff9407d059bb89fb70ba4112969c417c76d42a3676dc04e417680e429f2865c0c8608b709305555c7b3c31da116478bd2c9ba7a5688ac00b

  • memory/2688-4-0x0000000000630000-0x0000000000652000-memory.dmp
    Filesize

    136KB

  • memory/2688-17-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/2688-3-0x0000000000470000-0x000000000047E000-memory.dmp
    Filesize

    56KB

  • memory/2688-0-0x0000000000E10000-0x0000000000E4A000-memory.dmp
    Filesize

    232KB

  • memory/2688-5-0x0000000000520000-0x000000000052C000-memory.dmp
    Filesize

    48KB

  • memory/2688-6-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/2688-2-0x00000000009C0000-0x0000000000A00000-memory.dmp
    Filesize

    256KB

  • memory/2688-1-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/2688-7-0x00000000009C0000-0x0000000000A00000-memory.dmp
    Filesize

    256KB

  • memory/2820-15-0x0000000000920000-0x000000000095A000-memory.dmp
    Filesize

    232KB

  • memory/2820-16-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/2820-19-0x0000000000520000-0x0000000000542000-memory.dmp
    Filesize

    136KB

  • memory/2820-18-0x0000000002050000-0x0000000002090000-memory.dmp
    Filesize

    256KB

  • memory/2820-20-0x0000000074B50000-0x000000007523E000-memory.dmp
    Filesize

    6.9MB

  • memory/2820-21-0x0000000002050000-0x0000000002090000-memory.dmp
    Filesize

    256KB