Analysis

  • max time kernel
    147s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-02-2025 14:22

General

  • Target

    KayZer.exe

  • Size

    6.0MB

  • MD5

    7988a817d0491d1cd117c2557a984697

  • SHA1

    d8d5581e2480ea04a7840bc787981ab52a7e81ae

  • SHA256

    3689a3d591ab4d7a7861ba1445aba8707da08011e01d34828858ffecbe775f49

  • SHA512

    dc429315e8138dd5fcf44b136b1f6ebd5865f563cb15a24ce41ecd37620dcf23c12cc7901ffa8ca4f21848bb052ec9c1919149383c8778cb6dbbdd3714e0a158

  • SSDEEP

    98304:Bn0yk8bSv0M9j7ktyYxyLmu5LLGXdof+AHRk8A+OTLpyX92jxDwpsGVjI24:Wj9jYp3N8+AvOsAjGpsmjI2

Malware Config

Signatures

  • ElysiumStealer

    ElysiumStealer (previously known as ZeromaxStealer) is an info stealer that can steal login credentials for various accounts.

  • ElysiumStealer Support DLL 1 IoCs
  • Elysiumstealer family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 51 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KayZer.exe
    "C:\Users\Admin\AppData\Local\Temp\KayZer.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Maps connected drives based on registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1468

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Runtime.MSIL.1.0.0.0\sByte.dll

    Filesize

    40KB

    MD5

    94173de2e35aa8d621fc1c4f54b2a082

    SHA1

    fbb2266ee47f88462560f0370edb329554cd5869

    SHA256

    7e2c70b7732fb1a9a61d7ce3d7290bc7b31ea28cbfb1dbc79d377835615b941f

    SHA512

    cadbf4db0417283a02febbabd337bf17b254a6eb6e771f8a553a140dd2b04efd0672b1f3175c044a3edd0a911ce59d6695f765555262560925f3159bb8f3b798

  • memory/1468-14-0x0000000005850000-0x0000000005960000-memory.dmp

    Filesize

    1.1MB

  • memory/1468-5-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-16-0x0000000005750000-0x00000000057E2000-memory.dmp

    Filesize

    584KB

  • memory/1468-3-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-2-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-7-0x0000000000400000-0x0000000001012000-memory.dmp

    Filesize

    12.1MB

  • memory/1468-8-0x0000000000400000-0x0000000001012000-memory.dmp

    Filesize

    12.1MB

  • memory/1468-9-0x0000000002F90000-0x0000000002F9C000-memory.dmp

    Filesize

    48KB

  • memory/1468-17-0x0000000006050000-0x00000000060B6000-memory.dmp

    Filesize

    408KB

  • memory/1468-0-0x0000000000400000-0x0000000001012000-memory.dmp

    Filesize

    12.1MB

  • memory/1468-27-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-4-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-1-0x0000000077370000-0x0000000077371000-memory.dmp

    Filesize

    4KB

  • memory/1468-18-0x00000000067A0000-0x00000000067AA000-memory.dmp

    Filesize

    40KB

  • memory/1468-19-0x00000000069F0000-0x0000000006C04000-memory.dmp

    Filesize

    2.1MB

  • memory/1468-20-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-21-0x0000000009310000-0x0000000009322000-memory.dmp

    Filesize

    72KB

  • memory/1468-22-0x0000000000400000-0x0000000001012000-memory.dmp

    Filesize

    12.1MB

  • memory/1468-23-0x0000000077370000-0x0000000077371000-memory.dmp

    Filesize

    4KB

  • memory/1468-24-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-26-0x0000000077350000-0x0000000077440000-memory.dmp

    Filesize

    960KB

  • memory/1468-15-0x0000000005960000-0x0000000005F04000-memory.dmp

    Filesize

    5.6MB