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Analysis

  • max time kernel
    0s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2023, 13:25

General

  • Target

    37eadb2a6a140992e449eabfb0835d8f.exe

  • Size

    402KB

  • MD5

    37eadb2a6a140992e449eabfb0835d8f

  • SHA1

    77cc4134b54cc4a07624e7b332713a08b7efc617

  • SHA256

    4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463

  • SHA512

    d521f6cb1ab2723bafc5093eb69c326ce65f48a6961eddb8107159663e60104cf38d9baaea18013939ced450d0e8b63960619f2a40c7cdb715226da51b769e24

  • SSDEEP

    6144:kmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgW:NSmLAuEY71fviagATFmebVQDcYc6

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

C2

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes
  • reg_key

    5cd8f17f4086744065eb0992a09e05a2

  • 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 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe
    "C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c test.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2668
  • C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
    1⤵
    • Modifies Windows Firewall
    PID:2584
  • C:\Users\Admin\AppData\Local\Temp\Trojan.exe
    "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
    1⤵
    • Drops startup file
    • Executes dropped EXE
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2168
  • C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    42c5854aa0709d8bf6c28ea82c67b9a5

    SHA1

    124ea473f0572009de85a4a46f361109f4fae7d6

    SHA256

    71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

    SHA512

    c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

  • memory/2168-18-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2168-16-0x0000000074820000-0x0000000074DCB000-memory.dmp

    Filesize

    5.7MB

  • memory/2168-20-0x0000000074820000-0x0000000074DCB000-memory.dmp

    Filesize

    5.7MB

  • memory/2168-21-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2252-1-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/2252-17-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/2396-6-0x0000000001F90000-0x0000000001FD0000-memory.dmp

    Filesize

    256KB

  • memory/2396-7-0x0000000074820000-0x0000000074DCB000-memory.dmp

    Filesize

    5.7MB

  • memory/2396-5-0x0000000074820000-0x0000000074DCB000-memory.dmp

    Filesize

    5.7MB

  • memory/2396-15-0x0000000074820000-0x0000000074DCB000-memory.dmp

    Filesize

    5.7MB