Analysis

  • max time kernel
    140s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 02:20

General

  • Target

    a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe

  • Size

    66KB

  • MD5

    b6cf492f580943b7f3c5a6115e2b783f

  • SHA1

    44452b62ad27d90f5c5010f1cf813012705e24f8

  • SHA256

    a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84

  • SHA512

    6e63186895ee399f27ce93aab963c9e5cff0d5cdab0084f1a67ce5b267c51018cea8a755a17d1a2cf179884e9ea3c6dcbd4aa6fcb0d0326341cfd0d6ee99328b

  • SSDEEP

    768:ZrItKyw5WHXfQIhIiIk9ecAaVPD96KyX6P:Zr3Z5IfQIR81ad5yX6P

Score
9/10

Malware Config

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 4 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
  • 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\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe
    "C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\rgkhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:3732
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A7ECA8~1.EXE > nul
      2⤵
        PID:3104
    • C:\Windows\Debug\rgkhost.exe
      C:\Windows\Debug\rgkhost.exe
      1⤵
      • Executes dropped EXE
      PID:3792

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\debug\rgkhost.exe

      Filesize

      66KB

      MD5

      f1167e3ac008c6264e8e9485df343051

      SHA1

      79daf063544bec73011b1d0f69fd922b56828a24

      SHA256

      41b53c9d0de248bc19cd0ce32c13b30c59e4c0c7600ef86cbee3b7fdbe97dd17

      SHA512

      9d40bd7a0517b971ed97e93fc16dbfc9984ea38ea6c5ae2e32eb733951eaee90666ac8d20cc244639b1de909c0cf3c945306ce0120c0e48285ce496652895083

    • memory/3456-0-0x0000000000400000-0x0000000000411000-memory.dmp

      Filesize

      68KB

    • memory/3792-5-0x0000000000400000-0x0000000000411000-memory.dmp

      Filesize

      68KB

    • memory/3792-6-0x0000000000400000-0x0000000000411000-memory.dmp

      Filesize

      68KB