Analysis

  • max time kernel
    169s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    22-02-2022 05:53

General

  • Target

    3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.exe

  • Size

    161KB

  • MD5

    01a4c5345cb0e7103cd590236ab8f189

  • SHA1

    6788a3d23362909fbcbee05da1c8c5fdb949db2f

  • SHA256

    3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819

  • SHA512

    fc73aa703be0cfd3ece5e97dbe9e64eb602254114d5d19e8cf696778e5955a90590b9049c612ad9f6d10f0268014b16054c945ceb1a554ddb15cae9333ad5532

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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 49 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.exe
    "C:\Users\Admin\AppData\Local\Temp\3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.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:3048
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: GetForegroundWindowSpam
      PID:3016
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:1244
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:3768

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\3243a155d015906d59fdc180be84355f36c7d5316cfa20dd23a5725c412f6819.exe
    MD5

    a59e2bd173fc92df4276c6a672e43c86

    SHA1

    fbd90c045d36b3853c63a9eac5c6a009cf83a33b

    SHA256

    2630cbba27fa751b97299ca9e7cfda3e842688b23d78d0f08e622a15060e6f0d

    SHA512

    69d88ba99ca6cac0b4c8100b45dd6cc177acbff8b4f4c104e57f567c940c6461b26e7807afea7dc0e40dc9fc64c94fd5a3e1cce9afda4439fd1b1f319f8d4238