Analysis

  • max time kernel
    141s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 03:26

General

  • Target

    f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe

  • Size

    794KB

  • MD5

    ff969b5ce7a8e4ee529985a472588714

  • SHA1

    51867a6ec45771e6b06947170ed63e4487984e60

  • SHA256

    f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101

  • SHA512

    e45c9b383ad38ce88a326f0bb1352ddda7aba27f0be103079dc5124deb0fdd12fae410ce90fa1d2aed6c4867513ca72d09671653bce92b14fbb90a93c961350f

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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe
    "C:\Users\Admin\AppData\Local\Temp\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.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:948
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:644
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 644 -s 652
        3⤵
        • Program crash
        PID:1824

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe
    Filesize

    753KB

    MD5

    559d0fada4454a2d16a4109dc49be8e0

    SHA1

    cf1a1b3845052a2051f6f2c0d80f232ed3fbb1b4

    SHA256

    c4fb143c793502192f663e4ab8670b7a672b62b8b6babb942af04ad8825e793d

    SHA512

    76dbfab70162a306ba4e0cfbdc260ab2128ae5895085d2de619ab68e59c3bc2ac0d08b4d39304945d68dd4947fecb6226e664be2bdb4a34389cb16e4488d34cc

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe
    Filesize

    753KB

    MD5

    559d0fada4454a2d16a4109dc49be8e0

    SHA1

    cf1a1b3845052a2051f6f2c0d80f232ed3fbb1b4

    SHA256

    c4fb143c793502192f663e4ab8670b7a672b62b8b6babb942af04ad8825e793d

    SHA512

    76dbfab70162a306ba4e0cfbdc260ab2128ae5895085d2de619ab68e59c3bc2ac0d08b4d39304945d68dd4947fecb6226e664be2bdb4a34389cb16e4488d34cc

  • \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\f7dcd187cce5749c8da41c3059f67ed43f8d09ad298d96752ce0be8bbebcf101.exe
    Filesize

    753KB

    MD5

    559d0fada4454a2d16a4109dc49be8e0

    SHA1

    cf1a1b3845052a2051f6f2c0d80f232ed3fbb1b4

    SHA256

    c4fb143c793502192f663e4ab8670b7a672b62b8b6babb942af04ad8825e793d

    SHA512

    76dbfab70162a306ba4e0cfbdc260ab2128ae5895085d2de619ab68e59c3bc2ac0d08b4d39304945d68dd4947fecb6226e664be2bdb4a34389cb16e4488d34cc

  • memory/644-56-0x0000000000000000-mapping.dmp
  • memory/644-59-0x00000000010E0000-0x00000000011A6000-memory.dmp
    Filesize

    792KB

  • memory/644-60-0x000000001AEE0000-0x000000001AFD6000-memory.dmp
    Filesize

    984KB

  • memory/948-54-0x0000000074F21000-0x0000000074F23000-memory.dmp
    Filesize

    8KB

  • memory/1824-62-0x0000000000000000-mapping.dmp