Analysis

  • max time kernel
    169s
  • max time network
    61s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2022 23:23

General

  • Target

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d.exe

  • Size

    260KB

  • MD5

    55047507539c76cb78077af962c071b0

  • SHA1

    d20f11aaf898201c8d8d617a9ef45edfd613d077

  • SHA256

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d

  • SHA512

    800a5f41539bf705084d41282e24fcc4f4e2af282b9ad4d6865637378dd7ac0372d2be558be9bca233cd6f46eaf45c4b5edd7d4d448e051f4eb2f11a69b5d619

  • SSDEEP

    6144:ntfG12nqw7EB1XbtFZjkeQYsJlW+U9kzMv7hornBshW63:ntgPw7EvXbt/WTzK7Iny

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d.exe
    "C:\Users\Admin\AppData\Local\Temp\5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\dljac.exe
      "C:\Users\Admin\dljac.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1668 -s 396
      2⤵
      • Program crash
      PID:1388

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\dljac.exe

    Filesize

    260KB

    MD5

    55047507539c76cb78077af962c071b0

    SHA1

    d20f11aaf898201c8d8d617a9ef45edfd613d077

    SHA256

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d

    SHA512

    800a5f41539bf705084d41282e24fcc4f4e2af282b9ad4d6865637378dd7ac0372d2be558be9bca233cd6f46eaf45c4b5edd7d4d448e051f4eb2f11a69b5d619

  • C:\Users\Admin\dljac.exe

    Filesize

    260KB

    MD5

    55047507539c76cb78077af962c071b0

    SHA1

    d20f11aaf898201c8d8d617a9ef45edfd613d077

    SHA256

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d

    SHA512

    800a5f41539bf705084d41282e24fcc4f4e2af282b9ad4d6865637378dd7ac0372d2be558be9bca233cd6f46eaf45c4b5edd7d4d448e051f4eb2f11a69b5d619

  • \Users\Admin\dljac.exe

    Filesize

    260KB

    MD5

    55047507539c76cb78077af962c071b0

    SHA1

    d20f11aaf898201c8d8d617a9ef45edfd613d077

    SHA256

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d

    SHA512

    800a5f41539bf705084d41282e24fcc4f4e2af282b9ad4d6865637378dd7ac0372d2be558be9bca233cd6f46eaf45c4b5edd7d4d448e051f4eb2f11a69b5d619

  • \Users\Admin\dljac.exe

    Filesize

    260KB

    MD5

    55047507539c76cb78077af962c071b0

    SHA1

    d20f11aaf898201c8d8d617a9ef45edfd613d077

    SHA256

    5d39470a7b8e1aa6c0691dbc929078a0810da34ee955f1869a309ca9840b948d

    SHA512

    800a5f41539bf705084d41282e24fcc4f4e2af282b9ad4d6865637378dd7ac0372d2be558be9bca233cd6f46eaf45c4b5edd7d4d448e051f4eb2f11a69b5d619

  • memory/1388-65-0x0000000000000000-mapping.dmp

  • memory/1668-56-0x0000000075241000-0x0000000075243000-memory.dmp

    Filesize

    8KB

  • memory/2044-59-0x0000000000000000-mapping.dmp