Analysis

  • max time kernel
    118s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-09-2024 11:50

General

  • Target

    fa1075c626abe4315050d7b9544dd3b0N.exe

  • Size

    84KB

  • MD5

    fa1075c626abe4315050d7b9544dd3b0

  • SHA1

    2652e31f88810a74ac6260b5796bbedf9255cafa

  • SHA256

    96d2bb04174a2dfe53c2cdb4760188e6baa99066d5631c5b8c009652707adadb

  • SHA512

    b9ba435d0a7464908b82876ea3f1d33e8b3a637055a90924456ee7ae3640bb6aa94d8e092afd0cc0c2a056a5a5f585a6bd995d5398f959b130b0d0e6ec4425e5

  • SSDEEP

    1536:1clIGFNMi+hJUneHoGTvvv4V9hqdhbtgS:+RMi+fUnCTvvv4V9hEhbCS

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 IoCs
  • UPX packed file 8 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa1075c626abe4315050d7b9544dd3b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\fa1075c626abe4315050d7b9544dd3b0N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3840
    • C:\Users\Admin\AppData\Local\Temp\fa1075c626abe4315050d7b9544dd3b0N.exe
      "C:\Users\Admin\AppData\Local\Temp\fa1075c626abe4315050d7b9544dd3b0N.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4456
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VUIJE.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Audio Driver" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\system\lsass.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:2448
      • C:\Users\Admin\AppData\Roaming\system\lsass.exe
        "C:\Users\Admin\AppData\Roaming\system\lsass.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4144
        • C:\Users\Admin\AppData\Roaming\system\lsass.exe
          "C:\Users\Admin\AppData\Roaming\system\lsass.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3032
        • C:\Users\Admin\AppData\Roaming\system\lsass.exe
          "C:\Users\Admin\AppData\Roaming\system\lsass.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2944
          • C:\Users\Admin\AppData\Roaming\system\lsass.exe
            "C:\Users\Admin\AppData\Roaming\system\lsass.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:4964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\cxz.exe

    Filesize

    294B

    MD5

    bbf327f7d231d77e0b572935ddca1231

    SHA1

    154acf35a2e1d171ce28af0f91f22180db51d0d3

    SHA256

    a0e4f9c253249f57367f4a7aa5cd2aa2c603984a0de75de9bcf4bed4437b212b

    SHA512

    9558cd39891b2fc3a9950e1eacb05105a600fc6b4aef6893cf45237b0b9c48f3d46766f92878f50f01ec61614c4ed52daa8b815949cf79222cbff9813973fdd7

  • C:\Users\Admin\AppData\Local\Temp\VUIJE.txt

    Filesize

    146B

    MD5

    c8cba0a9d4d5600b5f53c4c0681d1115

    SHA1

    0e5348e210ca70b2b0ffdc3ff7e6f611716df80c

    SHA256

    ca2b63f6d7bf17480415ae93e115bf9f9699335e84e62719eefdbcc5a78bd2e1

    SHA512

    a2ad6eb5ae2f6d57ca15363ac2f0c57ca3580474e94b9c010750948814cf4d5ffa0c3e7ef44634a3593da23f56011703ff220a3d7780f6f01785bf3b6676ced0

  • C:\Users\Admin\AppData\Roaming\system\lsass.exe

    Filesize

    84KB

    MD5

    05a258be922961efda57b652dd352c8f

    SHA1

    031808763917f208101fadc074718fc4909edf57

    SHA256

    9570abb5ae58877e904d16e260cccab5f3683e83deabdc98e8e5d043748d4666

    SHA512

    79bf73f645920638ec547b0c00471072bc4a45c491d277868b44daac33cbb4d7cae03d5f15533d0a4c6bc37bd0c9a30571fd767e58a1225b48085c1b372c36e8

  • memory/2944-74-0x0000000000400000-0x0000000000403000-memory.dmp

    Filesize

    12KB

  • memory/2944-66-0x0000000000400000-0x0000000000403000-memory.dmp

    Filesize

    12KB

  • memory/2944-68-0x0000000000400000-0x0000000000403000-memory.dmp

    Filesize

    12KB

  • memory/2944-58-0x0000000000400000-0x0000000000403000-memory.dmp

    Filesize

    12KB

  • memory/2944-62-0x0000000000400000-0x0000000000403000-memory.dmp

    Filesize

    12KB

  • memory/3032-67-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3032-102-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3840-2-0x00000000007A0000-0x00000000007A1000-memory.dmp

    Filesize

    4KB

  • memory/3840-16-0x0000000002350000-0x0000000002351000-memory.dmp

    Filesize

    4KB

  • memory/3840-5-0x00000000023A0000-0x00000000023A1000-memory.dmp

    Filesize

    4KB

  • memory/3840-4-0x0000000002360000-0x0000000002361000-memory.dmp

    Filesize

    4KB

  • memory/3840-18-0x0000000002380000-0x0000000002381000-memory.dmp

    Filesize

    4KB

  • memory/3840-9-0x0000000002B70000-0x0000000002B71000-memory.dmp

    Filesize

    4KB

  • memory/3840-17-0x0000000002370000-0x0000000002371000-memory.dmp

    Filesize

    4KB

  • memory/3840-11-0x0000000002B90000-0x0000000002B91000-memory.dmp

    Filesize

    4KB

  • memory/3840-3-0x0000000002350000-0x0000000002351000-memory.dmp

    Filesize

    4KB

  • memory/3840-12-0x00000000007A0000-0x00000000007A1000-memory.dmp

    Filesize

    4KB

  • memory/3840-13-0x0000000002360000-0x0000000002361000-memory.dmp

    Filesize

    4KB

  • memory/3840-14-0x0000000002BA0000-0x0000000002BA1000-memory.dmp

    Filesize

    4KB

  • memory/3840-6-0x00000000023D0000-0x00000000023D1000-memory.dmp

    Filesize

    4KB

  • memory/3840-8-0x0000000002B60000-0x0000000002B61000-memory.dmp

    Filesize

    4KB

  • memory/3840-10-0x0000000002B80000-0x0000000002B81000-memory.dmp

    Filesize

    4KB

  • memory/3840-7-0x0000000002B50000-0x0000000002B51000-memory.dmp

    Filesize

    4KB

  • memory/4144-69-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4144-53-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4144-51-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4144-52-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4144-54-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4456-72-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4456-20-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4456-21-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4456-15-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4456-22-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4456-48-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4964-73-0x0000000000400000-0x0000000000404000-memory.dmp

    Filesize

    16KB

  • memory/4964-78-0x0000000000400000-0x0000000000404000-memory.dmp

    Filesize

    16KB

  • memory/4964-100-0x0000000000400000-0x0000000000404000-memory.dmp

    Filesize

    16KB