Analysis

  • max time kernel
    60s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-11-2022 23:20

General

  • Target

    b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe

  • Size

    117KB

  • MD5

    28668d0c5a87f416dc19e4f2c1534ec0

  • SHA1

    24bdf0d24148d75c4d86fefca446d3f21b3947f8

  • SHA256

    b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c

  • SHA512

    beb43d7a43049315fa57c53bed0b4f697acbd7591b3e57bb54fbbd889426588a4497f448bd99a7fbb55f447aa5891f5153fec76b0462dfe2ca958fe0846224e5

  • SSDEEP

    1536:yxqjQ+P04wsZLnDrCaO/LXPZtls+H37OUn8rLSFiv3W0JyvbxrOE:zr8WDrCjXPZtKsOULcQgE

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • 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.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe
    "C:\Users\Admin\AppData\Local\Temp\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe"
      2⤵
      • Executes dropped EXE
      PID:1736

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe

    Filesize

    77KB

    MD5

    37646bfc4f2239e66f2d439c6a2ad530

    SHA1

    2549e09796882dd3cb648431bcd75b0aa34c97f9

    SHA256

    7dac37bb4dec82f0b94ba8de20046c5980f92fdf4008bf411836b83e0d650eb2

    SHA512

    120a52deea3c4563ac24662be626ec7410d90fcce030de1e5b0063a58b936e69c89321232fb9beff3cbc5549a69cbb5f741de66bb190ca68ee24c43d89026f4b

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\b25f760559e6be3c8ea00dd1ef267de9542aae7c39da9a2723e07b58c2da107c.exe

    Filesize

    77KB

    MD5

    37646bfc4f2239e66f2d439c6a2ad530

    SHA1

    2549e09796882dd3cb648431bcd75b0aa34c97f9

    SHA256

    7dac37bb4dec82f0b94ba8de20046c5980f92fdf4008bf411836b83e0d650eb2

    SHA512

    120a52deea3c4563ac24662be626ec7410d90fcce030de1e5b0063a58b936e69c89321232fb9beff3cbc5549a69cbb5f741de66bb190ca68ee24c43d89026f4b

  • memory/1048-54-0x0000000076171000-0x0000000076173000-memory.dmp

    Filesize

    8KB

  • memory/1736-56-0x0000000000000000-mapping.dmp