Analysis

  • max time kernel
    45s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 03:53

General

  • Target

    76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe

  • Size

    2.7MB

  • MD5

    30886a4a12473e0426dee2068c918487

  • SHA1

    d5bec6ceafb4fd8c8a0834355c9451fc4c781497

  • SHA256

    76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8

  • SHA512

    342cf921f0447e670a99223547a98fcc572353342b87c3ef836a65bf8cb24f94a89421b10bd602eba4205e647871b40e2344a0d12a2215c58044eaaac6fb5853

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
  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe
    "C:\Users\Admin\AppData\Local\Temp\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.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:960
    • C:\Users\Admin\AppData\Local\Temp\3582-490\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1624 -s 652
        3⤵
        • Program crash
        PID:1660

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe
    Filesize

    1.9MB

    MD5

    aff14fc913618e0f01f97ac8f128f2dd

    SHA1

    d8145f4184c495db46e9c6d875bf464ed4fa2ddf

    SHA256

    a189bc92f6d0f4b593dd1930f0ea6707a3d24c1f0ae979e610e312cd31219199

    SHA512

    05c0fc2eb19ae40cb48ba11c2ef3beeeca0a9d0926ba7919aaac5a0e15c3ec2e4e8ce436a1ce3a7de3b7ab75b3c7b7d8118ce20798a6882f840baf066476e463

  • C:\Users\Admin\AppData\Local\Temp\3582-490\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe
    Filesize

    2.1MB

    MD5

    e762e7af5c46d835d52456708349e4c3

    SHA1

    c897cda901ef84b27c29bfe876233835145d0b75

    SHA256

    bdd946b2d6eb6ea45d24e19107725438ecd1feaaf5f3f48ecbb0bde121ad060e

    SHA512

    a94b581d37e75bed1eee01f5cc0107993c45a6b38a2813b3232324454d3728b29e8606ae060a42c7242e4bbec39476c93a62d6ffbb4d2e7be57d53bbeb6350f3

  • \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\76ffc61f60a6ba06f93e9b29430fafb20cf900f35bb76cf068b9f100fc4d2ad8.exe
    Filesize

    2.0MB

    MD5

    db058a3c18d69bd4834cfd458deb98b6

    SHA1

    47a82d6fe91ae53990bc19eb86dd7e4d5b8ddeb4

    SHA256

    ee0c9d5fd419e45c774d4f0aea6979a9402612398cdcafdcdf33f970cd6312cf

    SHA512

    912cf1e3b9da7f2e1e0a5a7e1f56041b62d2a006eaeeb896a7eb3b6252550a0d9e2d144599477c183f188e2a4a908bb71859482eb34852c473871063fe129488

  • memory/960-54-0x00000000769D1000-0x00000000769D3000-memory.dmp
    Filesize

    8KB

  • memory/1624-56-0x0000000000000000-mapping.dmp
  • memory/1624-59-0x0000000000330000-0x00000000005E8000-memory.dmp
    Filesize

    2.7MB

  • memory/1660-61-0x0000000000000000-mapping.dmp