Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2023, 11:48

General

  • Target

    17820a3f5b449a18367048096f35e07e.exe

  • Size

    187KB

  • MD5

    17820a3f5b449a18367048096f35e07e

  • SHA1

    ac1b5befc490f4ebaa0276e17f18918d002892a3

  • SHA256

    94421be3f113142c7f2703720069fbe8cbf24bca5d415255ec732a7963ec37b0

  • SHA512

    578a2e3048d2cbc8fd4d1b1f0e8542418ef6ba920380690a4311ca9978c662d2897a41d2c36ac6669d9b26520e15eac17f3517f7cdfa781954074afb32b7cd3c

  • SSDEEP

    3072:GYpYkfmmuJDJMCrUEk0WLLBjMw26RVTk3V2r65W2/YRPHAp7nvSozjFur:G4YSjuoCrfs2EW3Mr61aHAhnvDR

Score
8/10

Malware Config

Signatures

  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • ASPack v2.12-2.42 2 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\17820a3f5b449a18367048096f35e07e.exe
    "C:\Users\Admin\AppData\Local\Temp\17820a3f5b449a18367048096f35e07e.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1504
      • C:\Program Files\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2208
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2208 CREDAT:17410 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:3640
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2208 CREDAT:82948 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1108
    • C:\Windows\svcr.exe
      "C:\Windows\svcr.exe" "C:\Users\Admin\AppData\Local\Temp\17820a3f5b449a18367048096f35e07e.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Deletes itself
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4868
  • C:\Program Files\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files\Internet Explorer\IEXPLORE.EXE"
    1⤵
    • Modifies Internet Explorer settings
    PID:2164
  • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\svcr.exe

          Filesize

          187KB

          MD5

          17820a3f5b449a18367048096f35e07e

          SHA1

          ac1b5befc490f4ebaa0276e17f18918d002892a3

          SHA256

          94421be3f113142c7f2703720069fbe8cbf24bca5d415255ec732a7963ec37b0

          SHA512

          578a2e3048d2cbc8fd4d1b1f0e8542418ef6ba920380690a4311ca9978c662d2897a41d2c36ac6669d9b26520e15eac17f3517f7cdfa781954074afb32b7cd3c

        • memory/2068-0-0x0000000000400000-0x00000000007BE000-memory.dmp

          Filesize

          3.7MB

        • memory/2068-1-0x00000000023D0000-0x00000000024C0000-memory.dmp

          Filesize

          960KB

        • memory/2068-14-0x00000000023D0000-0x00000000024C0000-memory.dmp

          Filesize

          960KB

        • memory/2068-12-0x0000000000400000-0x00000000007BE000-memory.dmp

          Filesize

          3.7MB

        • memory/4868-15-0x0000000002730000-0x0000000002820000-memory.dmp

          Filesize

          960KB

        • memory/4868-13-0x0000000000400000-0x00000000007BE000-memory.dmp

          Filesize

          3.7MB

        • memory/4868-26-0x0000000002730000-0x0000000002820000-memory.dmp

          Filesize

          960KB

        • memory/4868-25-0x0000000000400000-0x00000000007BE000-memory.dmp

          Filesize

          3.7MB

        • memory/4868-17-0x0000000010410000-0x000000001042E000-memory.dmp

          Filesize

          120KB