Analysis

  • max time kernel
    179s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 17:12

General

  • Target

    52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394.exe

  • Size

    29KB

  • MD5

    4916cb099db6081c6a82c3af78f0e28d

  • SHA1

    54dd4ae52d940a3cdd4839fd168e17f46226b34b

  • SHA256

    52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394

  • SHA512

    9afa183e38357640147c1ac52c2fee3e1835ab192333e98308f50da3bad72af917e9560f6b07437a1a96be1d313055460124fa0e676098819d1097000511f199

  • SSDEEP

    384:9SItl77FDFucYfKQCcvVt5Th3iOmqD8lTeY6GBsbh0w4wlAokw9OhgOL1vYRGOZ7:b77ucYfKQT7z3sq4TewBKh0p29SgRn/

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

danamuhammad12.no-ip.org:1177

Mutex

dae31c02cb06222e776b9ccb9207edb1

Attributes
  • reg_key

    dae31c02cb06222e776b9ccb9207edb1

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394.exe
    "C:\Users\Admin\AppData\Local\Temp\52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Roaming\system.exe
      "C:\Users\Admin\AppData\Roaming\system.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\system.exe" "system.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:524

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\system.exe
    Filesize

    29KB

    MD5

    4916cb099db6081c6a82c3af78f0e28d

    SHA1

    54dd4ae52d940a3cdd4839fd168e17f46226b34b

    SHA256

    52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394

    SHA512

    9afa183e38357640147c1ac52c2fee3e1835ab192333e98308f50da3bad72af917e9560f6b07437a1a96be1d313055460124fa0e676098819d1097000511f199

  • C:\Users\Admin\AppData\Roaming\system.exe
    Filesize

    29KB

    MD5

    4916cb099db6081c6a82c3af78f0e28d

    SHA1

    54dd4ae52d940a3cdd4839fd168e17f46226b34b

    SHA256

    52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394

    SHA512

    9afa183e38357640147c1ac52c2fee3e1835ab192333e98308f50da3bad72af917e9560f6b07437a1a96be1d313055460124fa0e676098819d1097000511f199

  • \Users\Admin\AppData\Roaming\system.exe
    Filesize

    29KB

    MD5

    4916cb099db6081c6a82c3af78f0e28d

    SHA1

    54dd4ae52d940a3cdd4839fd168e17f46226b34b

    SHA256

    52c9b1b1d8a3babe07e31bb510ee9dc6d55a31dec86effcf0808a3caf8459394

    SHA512

    9afa183e38357640147c1ac52c2fee3e1835ab192333e98308f50da3bad72af917e9560f6b07437a1a96be1d313055460124fa0e676098819d1097000511f199

  • memory/524-61-0x0000000000000000-mapping.dmp
  • memory/1672-54-0x0000000076AE1000-0x0000000076AE3000-memory.dmp
    Filesize

    8KB

  • memory/1672-55-0x0000000074DE0000-0x000000007538B000-memory.dmp
    Filesize

    5.7MB

  • memory/1672-62-0x0000000074DE0000-0x000000007538B000-memory.dmp
    Filesize

    5.7MB

  • memory/1952-57-0x0000000000000000-mapping.dmp
  • memory/1952-64-0x0000000074DE0000-0x000000007538B000-memory.dmp
    Filesize

    5.7MB

  • memory/1952-65-0x0000000074DE0000-0x000000007538B000-memory.dmp
    Filesize

    5.7MB