Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-02-2024 01:02

General

  • Target

    b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f.exe

  • Size

    421KB

  • MD5

    10a331a12ca40f3293dfadfcecb8d071

  • SHA1

    ada41586d1366cf76c9a652a219a0e0562cc41af

  • SHA256

    b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f

  • SHA512

    1a5b8e77ddbab97bb4c848adbcd7dbfb9ca84307d1844dba9572fcea48a2cbb091a3fc52663b87568416adf18a1338adc07aab0bd5f1ab36a03c8ff8a035d399

  • SSDEEP

    12288:jh1Fk70TnvjcL8o0S86aZ+ldnqA1W0PeF7H:5k70TrcJX32ih1Re7H

Malware Config

Signatures

  • .NET Reactor proctector 2 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f.exe
    "C:\Users\Admin\AppData\Local\Temp\b58eec6e5aabc701404d5b5556c86fff5cc103c69eeda00061e838c4f122288f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:2236
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
        • Checks computer location settings
        • Drops startup file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3584
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe"
          3⤵
          • Executes dropped EXE
          PID:4760

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\qemu-ga.exe

      Filesize

      4KB

      MD5

      a5ce3aba68bdb438e98b1d0c70a3d95c

      SHA1

      013f5aa9057bf0b3c0c24824de9d075434501354

      SHA256

      9b860be98a046ea97a7f67b006e0b1bc9ab7731dd2a0f3a9fd3d710f6c43278a

      SHA512

      7446f1256873b51a59b9d2d3498cef5a41dbce55864c2a5fb8cb7d25f7d6e6d8ea249d551a45b75d99b1ad0d6fb4b5e4544e5ca77bcd627717d6598b5f566a79

    • memory/3584-25-0x0000000007950000-0x00000000079A0000-memory.dmp

      Filesize

      320KB

    • memory/3584-41-0x0000000075210000-0x00000000759C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3584-18-0x00000000056C0000-0x00000000057CA000-memory.dmp

      Filesize

      1.0MB

    • memory/3584-19-0x00000000055F0000-0x000000000562C000-memory.dmp

      Filesize

      240KB

    • memory/3584-27-0x00000000083A0000-0x00000000088CC000-memory.dmp

      Filesize

      5.2MB

    • memory/3584-26-0x0000000007CA0000-0x0000000007E62000-memory.dmp

      Filesize

      1.8MB

    • memory/3584-24-0x00000000067B0000-0x00000000067CE000-memory.dmp

      Filesize

      120KB

    • memory/3584-9-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/3584-20-0x0000000005630000-0x000000000567C000-memory.dmp

      Filesize

      304KB

    • memory/3584-14-0x0000000075210000-0x00000000759C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3584-15-0x0000000005560000-0x0000000005570000-memory.dmp

      Filesize

      64KB

    • memory/3584-16-0x0000000005B90000-0x00000000061A8000-memory.dmp

      Filesize

      6.1MB

    • memory/3584-22-0x00000000064B0000-0x0000000006526000-memory.dmp

      Filesize

      472KB

    • memory/3584-21-0x0000000005910000-0x0000000005976000-memory.dmp

      Filesize

      408KB

    • memory/3584-23-0x00000000065D0000-0x0000000006662000-memory.dmp

      Filesize

      584KB

    • memory/3584-17-0x0000000005590000-0x00000000055A2000-memory.dmp

      Filesize

      72KB

    • memory/3992-1-0x0000000075210000-0x00000000759C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3992-13-0x0000000075210000-0x00000000759C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3992-10-0x00000000025A0000-0x00000000045A0000-memory.dmp

      Filesize

      32.0MB

    • memory/3992-0-0x0000000004A30000-0x0000000004A84000-memory.dmp

      Filesize

      336KB

    • memory/3992-5-0x0000000004AE0000-0x0000000005084000-memory.dmp

      Filesize

      5.6MB

    • memory/3992-6-0x00000000050F0000-0x0000000005142000-memory.dmp

      Filesize

      328KB

    • memory/3992-2-0x0000000004AD0000-0x0000000004AE0000-memory.dmp

      Filesize

      64KB

    • memory/3992-3-0x0000000004AD0000-0x0000000004AE0000-memory.dmp

      Filesize

      64KB

    • memory/3992-4-0x0000000004AD0000-0x0000000004AE0000-memory.dmp

      Filesize

      64KB

    • memory/4760-43-0x00007FFCD65C0000-0x00007FFCD7081000-memory.dmp

      Filesize

      10.8MB

    • memory/4760-42-0x00007FFCD65C0000-0x00007FFCD7081000-memory.dmp

      Filesize

      10.8MB

    • memory/4760-40-0x00000000000E0000-0x00000000000E8000-memory.dmp

      Filesize

      32KB