Analysis

  • max time kernel
    155s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-05-2022 00:43

General

  • Target

    f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe

  • Size

    1.7MB

  • MD5

    3095fab372d926aa4bd95326893399ab

  • SHA1

    729fd507a1118b2d9008a097b7330c52760ceb9e

  • SHA256

    f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268

  • SHA512

    aada7f1eed7ed0730946e4b96f931413a8d8e307c56db84507e60d065ddd3e3861787040cc90b552059e08e91f4367872d02d69d3e821809b48cbf26f61f37b9

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 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
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe
    "C:\Users\Admin\AppData\Local\Temp\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.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:2256
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2420

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe

    Filesize

    1.6MB

    MD5

    b365af317ae730a67c936f21432b9c71

    SHA1

    a0bdfac3ce1880b32ff9b696458327ce352e3b1d

    SHA256

    bd2c2cf0631d881ed382817afcce2b093f4e412ffb170a719e2762f250abfea4

    SHA512

    cc3359e16c6fe905a9e176a87acf4c4ed5e22c29bfca11949799caf8442e00ec0d1679b3d8754dbc3e313528d3e8e82c0ec1941e2c3530b48229c1cb337f6b8b

  • C:\Users\Admin\AppData\Local\Temp\3582-490\f3bf61c11257150ab7090a5ac6e8fe056f1442adeec5dd2d40b91359510a5268.exe

    Filesize

    1.6MB

    MD5

    b365af317ae730a67c936f21432b9c71

    SHA1

    a0bdfac3ce1880b32ff9b696458327ce352e3b1d

    SHA256

    bd2c2cf0631d881ed382817afcce2b093f4e412ffb170a719e2762f250abfea4

    SHA512

    cc3359e16c6fe905a9e176a87acf4c4ed5e22c29bfca11949799caf8442e00ec0d1679b3d8754dbc3e313528d3e8e82c0ec1941e2c3530b48229c1cb337f6b8b

  • memory/2420-131-0x0000000000000000-mapping.dmp