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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • 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, 17:54

General

  • Target

    633c2616fcd3a0b3774556615072b801.exe

  • Size

    200KB

  • MD5

    633c2616fcd3a0b3774556615072b801

  • SHA1

    84132978d3952c72dc3a86d95ddd788f537e78f7

  • SHA256

    5181ab8ffd12b09e974dafdb618d572a60f5a95a09c26b5531cafd64595a4048

  • SHA512

    a90baf7f86855672827d383326c37773e81a3954b5761fed03845e5c4ded20baa5779fbd357bde2a231eddf45042966691021540ae6400433efd7ae537d994df

  • SSDEEP

    3072:MCJ59W+4OiJg+3L+/PoHTkxtGCgPFhfJUkq11zQQWzUURb:5J57Via+3L+oHwxtGPJcRQQJUR

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

fadlfreh.hopto.org:3973

Mutex

2e36917ee12f744b21767673c17c8221

Attributes
  • reg_key

    2e36917ee12f744b21767673c17c8221

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 2 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\633c2616fcd3a0b3774556615072b801.exe
    "C:\Users\Admin\AppData\Local\Temp\633c2616fcd3a0b3774556615072b801.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1796
    • C:\Users\Admin\AppData\Local\Temp\Windows.exe
      "C:\Users\Admin\AppData\Local\Temp\Windows.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3104
      • C:\Users\Admin\AppData\Local\Temp\Microsoft .exe
        "C:\Users\Admin\AppData\Local\Temp\Microsoft .exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3528
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Microsoft .exe" "Microsoft .exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:2368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    200KB

    MD5

    633c2616fcd3a0b3774556615072b801

    SHA1

    84132978d3952c72dc3a86d95ddd788f537e78f7

    SHA256

    5181ab8ffd12b09e974dafdb618d572a60f5a95a09c26b5531cafd64595a4048

    SHA512

    a90baf7f86855672827d383326c37773e81a3954b5761fed03845e5c4ded20baa5779fbd357bde2a231eddf45042966691021540ae6400433efd7ae537d994df

  • memory/1796-18-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1796-1-0x0000000000490000-0x00000000004CA000-memory.dmp

    Filesize

    232KB

  • memory/1796-2-0x0000000004ED0000-0x0000000004F6C000-memory.dmp

    Filesize

    624KB

  • memory/1796-3-0x0000000005520000-0x0000000005AC4000-memory.dmp

    Filesize

    5.6MB

  • memory/1796-12-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1796-0-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3104-19-0x0000000005120000-0x0000000005130000-memory.dmp

    Filesize

    64KB

  • memory/3104-16-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3104-20-0x00000000028E0000-0x00000000028EC000-memory.dmp

    Filesize

    48KB

  • memory/3104-21-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3104-34-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3528-35-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3528-36-0x0000000005770000-0x0000000005780000-memory.dmp

    Filesize

    64KB

  • memory/3528-37-0x0000000074B40000-0x00000000752F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3528-38-0x00000000059A0000-0x0000000005A32000-memory.dmp

    Filesize

    584KB

  • memory/3528-39-0x0000000005C90000-0x0000000005C9A000-memory.dmp

    Filesize

    40KB

  • memory/3528-40-0x0000000005770000-0x0000000005780000-memory.dmp

    Filesize

    64KB