Analysis

  • max time kernel
    119s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-09-2024 02:54

General

  • Target

    3377fd58aba5f3d4073d3806c8334190N.exe

  • Size

    37KB

  • MD5

    3377fd58aba5f3d4073d3806c8334190

  • SHA1

    12c12e3d5360fa78873e67981057358f25af6b0f

  • SHA256

    63b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512

  • SHA512

    1e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7

  • SSDEEP

    384:I+eKMizdRjnBhFbJ8ycPZrfr7wiApXrAF+rMRTyN/0L+EcoinblneHQM3epzXq/b:RegRlLJfcPZrfFAprM+rMRa8Nuept

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe
    "C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:740
    • C:\Users\Admin\AppData\Roaming\piska.exe
      "C:\Users\Admin\AppData\Roaming\piska.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\piska.exe" "piska.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2540
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /IM taskmgr.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\piska.exe

    Filesize

    37KB

    MD5

    3377fd58aba5f3d4073d3806c8334190

    SHA1

    12c12e3d5360fa78873e67981057358f25af6b0f

    SHA256

    63b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512

    SHA512

    1e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7

  • memory/740-0-0x0000000074B82000-0x0000000074B83000-memory.dmp

    Filesize

    4KB

  • memory/740-1-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/740-2-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/740-12-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/1280-13-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/1280-14-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/1280-15-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB

  • memory/1280-25-0x0000000074B80000-0x0000000075131000-memory.dmp

    Filesize

    5.7MB