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Analysis

  • max time kernel
    141s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/06/2024, 00:10

General

  • Target

    9a119ec39dd275392df608195a7c702acacf38bcbb1d1d7b12aa84acb7a5d2a4.exe

  • Size

    47KB

  • MD5

    6c6e9c9f402296784565bedfb1416d44

  • SHA1

    f6914cdbe16cc6563fa89793a979ba8aab3484bb

  • SHA256

    9a119ec39dd275392df608195a7c702acacf38bcbb1d1d7b12aa84acb7a5d2a4

  • SHA512

    3be3e5c8ae08fcc88876aa524f0f9ad838b9e7b377af70d0ede5da3c5ff9703254c839833afc7e9b8dd8a5b88d7b8ff6bdd5161285a7fe84b4be3464254a55c9

  • SSDEEP

    768:hX0gWvCzuw6Uj9uGi45XOPxV5HNWnnnl000e999vddddIyyyOOtttb2222v:6vCzuw6UD9Az5HNWnnn622222v

Score
9/10

Malware Config

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 6 IoCs
  • UPX dump on OEP (original entry point) 7 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

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

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a119ec39dd275392df608195a7c702acacf38bcbb1d1d7b12aa84acb7a5d2a4.exe
    "C:\Users\Admin\AppData\Local\Temp\9a119ec39dd275392df608195a7c702acacf38bcbb1d1d7b12aa84acb7a5d2a4.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\puehost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:764
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\9A119E~1.EXE > nul
      2⤵
        PID:2232
    • C:\Windows\Debug\puehost.exe
      C:\Windows\Debug\puehost.exe
      1⤵
      • Executes dropped EXE
      PID:3756

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Debug\puehost.exe

      Filesize

      47KB

      MD5

      be39be0e1e6556391adf43224ec1fbb4

      SHA1

      99984d4ef1b142c3e2eeddba7f3d26378988383b

      SHA256

      5b50a8e25211792b87dbf901c02cce513d643398748d47cb6e066e8cb73451f4

      SHA512

      0e8c38aad1003ba635004e518fa5fabe32af1a9674fd675bb5eaa8f37af0d48dedf3417df29871f6d0c156d63262ef4e9cb94349fe60cf4c351aa9097ca7e2f6

    • memory/3756-6-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/3756-7-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/3756-11-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/3756-14-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/3756-18-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/4760-0-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB