Analysis

  • max time kernel
    123s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    11-02-2022 02:39

General

  • Target

    f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe

  • Size

    3.2MB

  • MD5

    946c1593cafa18b53d900933aa62eb18

  • SHA1

    37b180b074db0f3172de725d0c891ec6fab07338

  • SHA256

    f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5

  • SHA512

    0eeec4f2de9bd8bad91ac95b79cf23f84130e75615518092b5e72912939107afbbc1398e54c412898f12e6caf27a44284cb9e470495c53ddf8e687855def5c67

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 computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 9 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 AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe
    "C:\Users\Admin\AppData\Local\Temp\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe"
      2⤵
      • Executes dropped EXE
      PID:404
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4944
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:2860

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe
    MD5

    80f7e00c80c66949779c5e3967f6e795

    SHA1

    486d15263b722f5c4c445d6de0ba49593a98e67e

    SHA256

    a9c97a33f7e0e7d79b74dc8f983f85117458a4979ceef1168e25ccee74758e0b

    SHA512

    e4d3e5992f3cceb79a5433e3ff8e0abebe55f5e38c1399dd04f9be41d6bf8753ae8cdaca35fc0aeb6ef47bd2a87c7d1372973ba1eebdc06968d9a76123848ff1

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f7eb757ab9334cf746d3529a05c94689e4439e4153b2c040d006242159ecf2e5.exe
    MD5

    80f7e00c80c66949779c5e3967f6e795

    SHA1

    486d15263b722f5c4c445d6de0ba49593a98e67e

    SHA256

    a9c97a33f7e0e7d79b74dc8f983f85117458a4979ceef1168e25ccee74758e0b

    SHA512

    e4d3e5992f3cceb79a5433e3ff8e0abebe55f5e38c1399dd04f9be41d6bf8753ae8cdaca35fc0aeb6ef47bd2a87c7d1372973ba1eebdc06968d9a76123848ff1

  • memory/4944-132-0x000002C53CF60000-0x000002C53CF70000-memory.dmp
    Filesize

    64KB

  • memory/4944-133-0x000002C53D7E0000-0x000002C53D7F0000-memory.dmp
    Filesize

    64KB

  • memory/4944-134-0x000002C53FCE0000-0x000002C53FCE4000-memory.dmp
    Filesize

    16KB