Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/11/2024, 12:55

General

  • Target
    3ab746224034868cbc69a2a474589c4fe3d1a3e9b494ee276d692aa97ce8859b.exe
  • Size 313KB
  • Sample241111-p52eksymaz
  • SHA256 3ab746224034868cbc69a2a474589c4fe3d1a3e9b494ee276d692aa97ce8859b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Disables use of System Restore points 1 TTPs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 3 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 42 IoCs
  • UPX packed file 2 IoCs

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

  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Modifies registry class 5 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ab746224034868cbc69a2a474589c4fe3d1a3e9b494ee276d692aa97ce8859b.exe
    "C:\Users\Admin\AppData\Local\Temp\3ab746224034868cbc69a2a474589c4fe3d1a3e9b494ee276d692aa97ce8859b.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Windows\YHN8O2C\service.exe
      "C:\Windows\YHN8O2C\service.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4572
    • C:\Windows\YHN8O2C\smss.exe
      "C:\Windows\YHN8O2C\smss.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4844
    • C:\Windows\YHN8O2C\system.exe
      "C:\Windows\YHN8O2C\system.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Event Triggered Execution: Image File Execution Options Injection
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies system executable filetype association
      • Adds Run key to start application
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3788
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3788 -s 1380
        3⤵
        • Program crash
        PID:2580
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3788 -s 1388
        3⤵
        • Program crash
        PID:1988
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3788 -s 1404
        3⤵
        • Program crash
        PID:4208
    • C:\Windows\YHN8O2C\winlogon.exe
      "C:\Windows\YHN8O2C\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2692
    • C:\Windows\lsass.exe
      "C:\Windows\lsass.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3816
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3788 -ip 3788
    1⤵
      PID:2116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3788 -ip 3788
      1⤵
        PID:2292
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3788 -ip 3788
        1⤵
          PID:2436

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              DGQ2Y5G.exe

              • Path C:\Windows\DGQ2Y5G.exe
              • Size 313KB
              • SHA256 49739dc6c520093b8ccf34cb06b8987354e36e0a7e8ba5dba1bb6c55fd1a1aa8
              • MD5 SHA1 SHA512 SSDEEP

              JNW6S6R.exe

              • Path C:\Windows\JNW6S6R.exe
              • Size 313KB
              • SHA256 1cb4026142be72f6437039a5185ef2809495da404272a785f1a91034b0af8188
              • MD5 SHA1 SHA512 SSDEEP

              MHG8N4I.cmd

              • Path C:\Windows\SysWOW64\FTV3Y4L\MHG8N4I.cmd
              • Size 313KB
              • SHA256 547649e6c8c49ef45874ae871edeccdf8c05e7e914baa65eb3bd352ab646a94e
              • MD5 SHA1 SHA512 SSDEEP

              MHG8N4I.cmd

              • Path C:\Windows\SysWOW64\FTV3Y4L\MHG8N4I.cmd
              • Size 313KB
              • SHA256 daa6646a4177d8a23a245e93be53215e72e0b2a8176f4e0c19903d136bdb0622
              • MD5 SHA1 SHA512 SSDEEP

              TRV3D1O.exe

              • Path C:\Windows\SysWOW64\TRV3D1O.exe
              • Size 313KB
              • SHA256 17541ff72f845a86cf09a0a780907541a31e435d5fa8d7265daff19c4727c355
              • MD5 SHA1 SHA512 SSDEEP

              systear.dll

              • Path C:\Windows\SysWOW64\systear.dll
              • Size 127B
              • SHA256 c3daefdcdbcf0ff577bd90db174d73edaa695a3b67f3b0c9172f3c312d0c2f19
              • MD5 SHA1 SHA512

              systear.dll

              • Path C:\Windows\SysWOW64\systear.dll
              • Size 141B
              • SHA256 a3ba19b213288fbc488c7c5f2297a3d7fb0e7fa761fb5af5449e48e0bb9dd9a9
              • MD5 SHA1 SHA512

              KDJ2S8C.exe

              • Path C:\Windows\YHN8O2C\KDJ2S8C.exe
              • Size 313KB
              • SHA256 04cfcf8e451a9b0231c5063ca8507e4bed6489f0fb01367bea2cd3619caf4fd6
              • MD5 SHA1 SHA512 SSDEEP

              XDX3E1U.com

              • Path C:\Windows\YHN8O2C\XDX3E1U.com
              • Size 313KB
              • SHA256 43f8142434e77cd84043829e4c05c4ddda5930f202396d3115008fdd770c57c3
              • MD5 SHA1 SHA512 SSDEEP

              regedit.cmd

              • Path C:\Windows\YHN8O2C\regedit.cmd
              • Size 313KB
              • SHA256 2b538620d691745805591295b469866a63c35c5a6b581a5a0f976884c8bbde4d
              • MD5 SHA1 SHA512 SSDEEP

              service.exe

              • Path C:\Windows\YHN8O2C\service.exe
              • Size 313KB
              • SHA256 c936ae12e9ef151c7fbe57be25184fccc92bcc6ccbd75eab67f2c1d2fee5164a
              • MD5 SHA1 SHA512 SSDEEP

              smss.exe

              • Path C:\Windows\YHN8O2C\smss.exe
              • Size 313KB
              • SHA256 16ba71a8dc7ae99aac9a4c8a0c0bec44ce306dd035f61f2e0f438a6cd1339c0a
              • MD5 SHA1 SHA512 SSDEEP

              system.exe

              • Path C:\Windows\YHN8O2C\system.exe
              • Size 313KB
              • SHA256 389cb54684a1682a9f46b8bc538df4ce31a33de8f2314364735b9a70450f94d5
              • MD5 SHA1 SHA512 SSDEEP

              winlogon.exe

              • Path C:\Windows\YHN8O2C\winlogon.exe
              • Size 313KB
              • SHA256 4de8c23e832a45f00a5f09599346bd9d55b2c783ee7d4bceb1c38bf008113862
              • MD5 SHA1 SHA512 SSDEEP

              cypreg.dll

              • Path C:\Windows\cypreg.dll
              • Size 361KB
              • SHA256 b73e8cf25db9683d28cca18b3db91fefa1f8c1f6c06bcb0ff1855c9ca3e498f3
              • MD5 SHA1 SHA512 SSDEEP

              cypreg.dll

              • Path C:\Windows\cypreg.dll
              • Size 361KB
              • SHA256 1112c19bd06e331ad2a4ce38c0742528f9b92b6f1c7a757d38f32a83e26cf58e
              • MD5 SHA1 SHA512 SSDEEP

              lsass.exe

              • Path C:\Windows\lsass.exe
              • Size 313KB
              • SHA256 ccf00aebd5c07adf6dc73cad4753fc968616dacb98d0747b238a6e32301aefbc
              • MD5 SHA1 SHA512 SSDEEP

              lsass.exe

              • Path C:\Windows\lsass.exe
              • Size 313KB
              • SHA256 c0166599756f9d522f65183cf57b98aa999633641b361bf7938b7bb609283c9d
              • MD5 SHA1 SHA512 SSDEEP

              moonlight.dll

              • Path C:\Windows\moonlight.dll
              • Size 65KB
              • SHA256 dc33796b634ea14ed80a492257f698d103a57e1a041ccab92945efa8201a65f7
              • MD5 SHA1 SHA512 SSDEEP

              onceinabluemoon.mid

              • Path C:\Windows\onceinabluemoon.mid
              • Size 8KB
              • SHA256 c8aa5c023bf32f1c1e27b8136cf4d622101e58a80417d97271d3c0ba44528cae
              • MD5 SHA1 SHA512 SSDEEP

              msvbvm60.dll

              • Path C:\Windows\system\msvbvm60.dll
              • Size 1.4MB
              • SHA256 104fcb338da8345db51670d5f8f60c4041ea2ab55ea48c18d408866afddfd5d9
              • MD5 SHA1 SHA512 SSDEEP

              msvbvm60.dll

              • Path C:\Windows\system\msvbvm60.dll
              • Size 1.4MB
              • SHA256 3b1c71df9d43db5fabd341be8a6b6db4a5a4f863e170b05ac84542ed3ebf901b
              • MD5 SHA1 SHA512 SSDEEP

              msvbvm60.dll

              • Path C:\Windows\system\msvbvm60.dll
              • Size 1.4MB
              • SHA256 e13fb59a98f3d4bc9f1826c79dd36e53b587b7353823dd952183f0f3502725da
              • MD5 SHA1 SHA512 SSDEEP

              memory/2008-0-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/2008-266-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/2692-311-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/2692-123-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/3788-310-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/3788-87-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/3788-314-0x0000000010000000-0x0000000010075000-memory.dmp

              memory/3816-265-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/3816-312-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/4572-63-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/4572-308-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/4844-309-0x0000000000400000-0x000000000045D000-memory.dmp

              memory/4844-74-0x0000000000400000-0x000000000045D000-memory.dmp