Analysis

  • max time kernel
    180s
  • max time network
    208s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 20:54

General

  • Target

    b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe

  • Size

    163KB

  • MD5

    feccddaace6fecfd190c7ed21b46b028

  • SHA1

    c970d6f679988e8f92ea26bb2771d129c9698899

  • SHA256

    b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f

  • SHA512

    c98e7122875a7bf0ed9256af045d7463d54719caa186535cd49bd9b5dd2d6c2e2f74d88982bcf4989cf7596bb3d9c146b5ca4116963b6c4c5ca04419ebe59dfc

  • SSDEEP

    768:eyxqjQl/EMQt4Oei7RwsHxyP7nbxzOQdJOZWR7G4t1/RHcrvYXK+ZP+I5v7px9l:JxqjQ+P04wsmJCnKG4DRHcDAQI5v7px

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
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe
    "C:\Users\Admin\AppData\Local\Temp\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.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:1992
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe

    Filesize

    122KB

    MD5

    14d3b7b0f53047217bccb335f6e23498

    SHA1

    6ae46c7c2b14b33458a4b2e1a480b245c7d1c869

    SHA256

    286e6b19471a5d5766d48852b6660d78e3aa6d19e624af23e76945550ca03b10

    SHA512

    ab6b5b8a3d663ca0bf489bc305ebe2ac594d4fbd129578dfbd5b3de82e57a9f422a1db2d52a977cca404387f1c4d0c881652de2d7c78d714e6f14f958d5c7067

  • \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\b55573d54c18a8ae6256082a2afae50f208fcd61ecc8a5ef1a2ddbd3b73fef8f.exe

    Filesize

    122KB

    MD5

    14d3b7b0f53047217bccb335f6e23498

    SHA1

    6ae46c7c2b14b33458a4b2e1a480b245c7d1c869

    SHA256

    286e6b19471a5d5766d48852b6660d78e3aa6d19e624af23e76945550ca03b10

    SHA512

    ab6b5b8a3d663ca0bf489bc305ebe2ac594d4fbd129578dfbd5b3de82e57a9f422a1db2d52a977cca404387f1c4d0c881652de2d7c78d714e6f14f958d5c7067

  • memory/1556-56-0x0000000000000000-mapping.dmp

  • memory/1556-60-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1556-63-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-54-0x00000000760C1000-0x00000000760C3000-memory.dmp

    Filesize

    8KB

  • memory/1992-59-0x0000000002730000-0x000000000278D000-memory.dmp

    Filesize

    372KB

  • memory/1992-62-0x0000000002730000-0x000000000278D000-memory.dmp

    Filesize

    372KB