Analysis

  • max time kernel
    120s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 23:48

General

  • Target

    9acd975f4c97ed6d72af28fe63cd828eddaf394a3c6cec34c74739ebcb2005d6N.exe

  • Size

    77KB

  • MD5

    e993cfb6e61851f8e4b8a0de1109e7e0

  • SHA1

    7ed75b6f3d933016bb4064900780fdf702889e09

  • SHA256

    9acd975f4c97ed6d72af28fe63cd828eddaf394a3c6cec34c74739ebcb2005d6

  • SHA512

    ff3b842bc78179bf267852b7f1a73159db146e319f064b556d92c71a968c5061675377ad7e1663cdf2ca98b9f5d10a0ed64037f5223bd217f053e8bda1c6f1ad

  • SSDEEP

    1536:c+egCWviDlboRh2Zz6XGuM3M9vxG33eSORdRujx7zG3zJB52HB:cICWqboSx6e3MFC3elRdROVzG352HB

Malware Config

Signatures

  • Njrat family
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9acd975f4c97ed6d72af28fe63cd828eddaf394a3c6cec34c74739ebcb2005d6N.exe
    "C:\Users\Admin\AppData\Local\Temp\9acd975f4c97ed6d72af28fe63cd828eddaf394a3c6cec34c74739ebcb2005d6N.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Roaming\dllhost.exe
      "C:\Users\Admin\AppData\Roaming\dllhost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1188
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h "C:\Users\Admin\AppData\Roaming\dllhost.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4264

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\dllhost.exe

    Filesize

    77KB

    MD5

    e993cfb6e61851f8e4b8a0de1109e7e0

    SHA1

    7ed75b6f3d933016bb4064900780fdf702889e09

    SHA256

    9acd975f4c97ed6d72af28fe63cd828eddaf394a3c6cec34c74739ebcb2005d6

    SHA512

    ff3b842bc78179bf267852b7f1a73159db146e319f064b556d92c71a968c5061675377ad7e1663cdf2ca98b9f5d10a0ed64037f5223bd217f053e8bda1c6f1ad

  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

    Filesize

    516B

    MD5

    6f27257307fa0b5c51a85fb3203060ee

    SHA1

    04d0578e3f4eaa7c37495ea2ee13aed27697b16f

    SHA256

    1092d7590493d13ab14eef3186133e35b341dbf397b57e5bdd1305fe0fe029e9

    SHA512

    e545d034d1f268773a517475eb662941df925efaf3a57d110f2c0c9d2498ad98da49e0ac07bc0f62cd32875adedf638ed2008f62d7d8bae8cddd27e915251ccb

  • memory/744-0-0x0000000074E72000-0x0000000074E73000-memory.dmp

    Filesize

    4KB

  • memory/744-1-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/744-2-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/744-19-0x0000000074E72000-0x0000000074E73000-memory.dmp

    Filesize

    4KB

  • memory/744-20-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/744-23-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-18-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-25-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-26-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB

  • memory/1188-27-0x0000000074E70000-0x0000000075421000-memory.dmp

    Filesize

    5.7MB