Analysis

  • max time kernel
    111s
  • max time network
    94s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 02:21

General

  • Target

    49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe

  • Size

    75KB

  • MD5

    bc6b454fd9aa7c4bed3337850e889490

  • SHA1

    f9cbf696ce757f0a1146f2f77fc7143766a382f1

  • SHA256

    49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706ac

  • SHA512

    554c1304361bf8d669dd02462bf5b70e65659d04a2a56683fb9991436f8988d349d558e6b99853ed892b84a71597063d37423201d0ff2f08a58a2a5c6513c011

  • SSDEEP

    768:bDcpEBlLfQcubgEp1Ayk96XyXXPdtldE9aHNWnnnl000e999vddddIyyyOwkkkkT:bDcWLfIbgEp10gyX/dtnTHNWnnn6Y

Malware Config

Signatures

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe
    "C:\Users\Admin\AppData\Local\Temp\49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\zskhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:2928
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\49CC4A~1.EXE > nul
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2980
  • C:\Windows\Debug\zskhost.exe
    C:\Windows\Debug\zskhost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    PID:3024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Debug\zskhost.exe

    Filesize

    75KB

    MD5

    e061cef12b3a10e54973fbf81e688ccd

    SHA1

    7c12d0f08c738f183bd3f3d195d567486f8e2529

    SHA256

    5969848a1cd52978c8c2da4452b6d0d2b2fad928d407dde419e16ec4f7887b3a

    SHA512

    4c58e02944ca90181e8a71cbff888ffa30228f6196a7bd9421bac26b07ee649b8d0df6497b068fd2b3368d709d1c17d60f328cf716b2413d54fa90a9628e6745

  • memory/2812-0-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/2812-5-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/3024-6-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB