Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11-11-2024 21:02

General

  • Target

    b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe

  • Size

    125KB

  • MD5

    ab2b37d75b61a76cf411323c9881f4b9

  • SHA1

    51c8b0e275400851ace0141a7e519fd3f91dd480

  • SHA256

    b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a

  • SHA512

    d826c78ef9b317c25c5f87a39f30ae637302548f79b66c2a3d9180ccf454eabe363cb97aa4a0be73e19b7e205fa6376ab2cf4d091928cac7accd4a8b03ca59eb

  • SSDEEP

    3072:sr85CzZjAwkpMwLJHZeveV8kQPu4lI5w2HgaH12m4029ZY:k9VjAwCMwxZesg212m402S

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

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

  • Neshta family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe
    "C:\Users\Admin\AppData\Local\Temp\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe"
      2⤵
      • Executes dropped EXE
      PID:1756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b7cf106c7e3aa701d363bd96b4d32e7e0c9d795c571a8d1267dd58e568022c1a.exe

    Filesize

    85KB

    MD5

    50b7f7d82758a9fc6e7e6a1e52c8d20e

    SHA1

    5a7f917c316ecd0f0988b46a329aeda9cd9c82d8

    SHA256

    ef1e366a0eb09001428240a7304f8f8bebb7ec865c3eb29d8c2cef4fd3abf76f

    SHA512

    2be105b5e37c9a5fdb204d379b4b8716891e46a10d72d78b46ee380d8c3c67e290ce72d5b6f0384bd4d5c514f098b308ec48f18daf58f8a7bb7aa7cab63a6fef

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

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/2568-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2568-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB