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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    07/02/2025, 04:24

General

  • Target

    21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe

  • Size

    43KB

  • MD5

    d1fb6ce7c73ac96ff29f78bc528e156b

  • SHA1

    b330247292007e08115001a357b8e9d8ae23366b

  • SHA256

    21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9

  • SHA512

    3209c3ce29fc6771b628e819abb645015c79c385b0b11d810028330c044556173cb8914bf1eedb278226bd745ddc7545bad8892f2f2dca0befb3d92dc1a97d4d

  • SSDEEP

    384:LZyexy1STss7yKSVB8YYkEhrpS2dzsIij+ZsNO3PlpJKkkjh/TzF7pWnWygreT0k:ltQk4smKSn8hlrkYuXQ/ofm+L

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

rusjc

C2

185.79.132.175:8000

Mutex

Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe
    "C:\Users\Admin\AppData\Local\Temp\21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2928
    • C:\Users\Admin\AppData\Local\Temp\dllhost.exe
      "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    d1fb6ce7c73ac96ff29f78bc528e156b

    SHA1

    b330247292007e08115001a357b8e9d8ae23366b

    SHA256

    21a3e6f76e41c01ebc3193eef929486e2302fb05382251cf94c942291dad4ab9

    SHA512

    3209c3ce29fc6771b628e819abb645015c79c385b0b11d810028330c044556173cb8914bf1eedb278226bd745ddc7545bad8892f2f2dca0befb3d92dc1a97d4d

  • memory/2928-0-0x0000000073C3E000-0x0000000073C3F000-memory.dmp

    Filesize

    4KB

  • memory/2928-1-0x0000000000FE0000-0x0000000000FF2000-memory.dmp

    Filesize

    72KB

  • memory/2928-2-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2928-10-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-12-0x0000000000800000-0x0000000000812000-memory.dmp

    Filesize

    72KB

  • memory/2980-11-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-13-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-14-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-15-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB