Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    08-10-2021 08:26

General

  • Target

    13a1c548abf86e0c908fdeca6fb315fe.exe

  • Size

    1009KB

  • MD5

    13a1c548abf86e0c908fdeca6fb315fe

  • SHA1

    c2988a93906cffd63704990194eb9b3ba556a209

  • SHA256

    42b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107

  • SHA512

    db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d

Malware Config

Signatures

  • Detect Neshta Payload 3 IoCs
  • 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.

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\13a1c548abf86e0c908fdeca6fb315fe.exe
    "C:\Users\Admin\AppData\Local\Temp\13a1c548abf86e0c908fdeca6fb315fe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Users\Admin\AppData\Local\Temp\13a1c548abf86e0c908fdeca6fb315fe.exe
      "C:\Users\Admin\AppData\Local\Temp\13a1c548abf86e0c908fdeca6fb315fe.exe"
      2⤵
      • Modifies system executable filetype association
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      PID:764

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/764-66-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-63-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-69-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-67-0x00000000004080E4-mapping.dmp
  • memory/764-59-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-60-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-65-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-62-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-61-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/764-64-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/1776-56-0x0000000004BB0000-0x0000000004BB1000-memory.dmp
    Filesize

    4KB

  • memory/1776-53-0x00000000012D0000-0x00000000012D1000-memory.dmp
    Filesize

    4KB

  • memory/1776-58-0x0000000005570000-0x00000000055C6000-memory.dmp
    Filesize

    344KB

  • memory/1776-57-0x00000000005E0000-0x00000000005F1000-memory.dmp
    Filesize

    68KB

  • memory/1776-55-0x0000000076851000-0x0000000076853000-memory.dmp
    Filesize

    8KB