Analysis

  • max time kernel
    135s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-08-2024 01:52

General

  • Target

    e9b46bc46e9bec0632d4e5311e5f79329ddba93416479bd9a2b9d57f13e7c898.exe

  • Size

    6.2MB

  • MD5

    dc074ad153c3355dcf323db77863b404

  • SHA1

    ae3cd6238550adca3a2809a302d536dce90957fa

  • SHA256

    e9b46bc46e9bec0632d4e5311e5f79329ddba93416479bd9a2b9d57f13e7c898

  • SHA512

    b9b8820540576ae9b2bf372c5ec8c7a1ea8f6db4d4547668b77e67223a45cd608e998b1b74352419e6c2265e3c7552afb43ed7bff32b611c789960868474e195

  • SSDEEP

    98304:ssRWMlKfFfdLLuA6quwceROHDNfjZa+SVlzVORsb98+L4Ow9fFrSfGk:ssRWMsWAe/eROH5A+S3Qs/Lm99rSe

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e9b46bc46e9bec0632d4e5311e5f79329ddba93416479bd9a2b9d57f13e7c898.exe
    "C:\Users\Admin\AppData\Local\Temp\e9b46bc46e9bec0632d4e5311e5f79329ddba93416479bd9a2b9d57f13e7c898.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\jewkkwnf\jewkkwnf.exe" /tn "jewkkwnf HR" /sc HOURLY /rl HIGHEST
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1668
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /RU "Admin" /tr "C:\ProgramData\jewkkwnf\jewkkwnf.exe" /tn "jewkkwnf LG" /sc ONLOGON /rl HIGHEST
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\jewkkwnf\jewkkwnf.exe

    Filesize

    6.2MB

    MD5

    dc074ad153c3355dcf323db77863b404

    SHA1

    ae3cd6238550adca3a2809a302d536dce90957fa

    SHA256

    e9b46bc46e9bec0632d4e5311e5f79329ddba93416479bd9a2b9d57f13e7c898

    SHA512

    b9b8820540576ae9b2bf372c5ec8c7a1ea8f6db4d4547668b77e67223a45cd608e998b1b74352419e6c2265e3c7552afb43ed7bff32b611c789960868474e195

  • memory/2784-3-0x0000000003620000-0x0000000003621000-memory.dmp

    Filesize

    4KB

  • memory/2784-8-0x0000000000BB0000-0x0000000001634000-memory.dmp

    Filesize

    10.5MB

  • memory/2784-5-0x0000000003640000-0x0000000003641000-memory.dmp

    Filesize

    4KB

  • memory/2784-11-0x0000000000BB0000-0x0000000001634000-memory.dmp

    Filesize

    10.5MB

  • memory/2784-4-0x0000000003630000-0x0000000003631000-memory.dmp

    Filesize

    4KB

  • memory/2784-0-0x0000000000C3A000-0x0000000000FFF000-memory.dmp

    Filesize

    3.8MB

  • memory/2784-2-0x00000000035F0000-0x00000000035F1000-memory.dmp

    Filesize

    4KB

  • memory/2784-1-0x00000000017A0000-0x00000000017A1000-memory.dmp

    Filesize

    4KB

  • memory/2784-7-0x0000000003660000-0x0000000003661000-memory.dmp

    Filesize

    4KB

  • memory/2784-6-0x0000000003650000-0x0000000003651000-memory.dmp

    Filesize

    4KB

  • memory/2784-19-0x0000000000C3A000-0x0000000000FFF000-memory.dmp

    Filesize

    3.8MB

  • memory/2784-20-0x0000000000BB0000-0x0000000001634000-memory.dmp

    Filesize

    10.5MB