Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 14:00

General

  • Target
    Fattura 00384788-0849838.pdf.exe
  • Size 867KB
  • Sample241002-ra5jvstdjb
  • SHA256 a2deb60615b3bd20beeb9253547a41c0a970139bfb59d9f88854b8b61880ead1
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in System32 directory 56 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • NSIS installer 2 IoCs
  • Modifies data under HKEY_USERS 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch -p
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
      C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
      2⤵
        PID:3276
      • C:\Windows\system32\DllHost.exe
        C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
        2⤵
          PID:4816
      • C:\Users\Admin\AppData\Local\Temp\Fattura 00384788-0849838.pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\Fattura 00384788-0849838.pdf.exe"
        1⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2380
        • C:\Users\Admin\AppData\Local\Temp\Fattura 00384788-0849838.pdf.exe
          "C:\Users\Admin\AppData\Local\Temp\Fattura 00384788-0849838.pdf.exe"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3208
      • C:\Users\Admin\AppData\Local\Temp\zsioqoc.exe
        C:\Users\Admin\AppData\Local\Temp\zsioqoc.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of SetThreadContext
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1932
        • C:\Users\Admin\AppData\Local\Temp\zsioqoc.exe
          C:\Users\Admin\AppData\Local\Temp\zsioqoc.exe
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2156
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 636
            3⤵
            • Program crash
            PID:2488
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 656
            3⤵
            • Program crash
            PID:5052
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2156 -ip 2156
        1⤵
          PID:1604
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2156 -ip 2156
          1⤵
            PID:4196

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                arvnhth

                • Path C:\ProgramData\SoftwareDistribution\arvnhth
                • Size 654B
                • SHA256 87104a1bfe2367cf03632ece1d3cdedd33dc979a123d0030de4e0aeb02adc30b
                • MD5 SHA1 SHA512

                System.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nss8DD9.tmp\System.dll
                • Size 11KB
                • SHA256 44e5dfd551b38e886214bd6b9c8ee913c4c4d1f085a6575d97c3e892b925da82
                • MD5 SHA1 SHA512 SSDEEP

                zsioqoc.exe

                • Path C:\Users\Admin\AppData\Local\Temp\zsioqoc.exe
                • Size 867KB
                • SHA256 a2deb60615b3bd20beeb9253547a41c0a970139bfb59d9f88854b8b61880ead1
                • MD5 SHA1 SHA512 SSDEEP

                LICENSE_en_US.TXT

                • Path C:\Users\Admin\AppData\Roaming\LICENSE_en_US.TXT
                • Size 2KB
                • SHA256 f8dfac00ca2636f16dbb824c1626a607308bb582356fb736d1ee3f5f2656d861
                • MD5 SHA1 SHA512

                NsResize.dll

                • Path C:\Users\Admin\AppData\Roaming\NsResize.dll
                • Size 60KB
                • SHA256 ef2d114896f07fc20aed5c3045754de0103813aa31bedb188262cec6fb3263dd
                • MD5 SHA1 SHA512 SSDEEP

                README_kn_IN.TXT

                • Path C:\Users\Admin\AppData\Roaming\README_kn_IN.TXT
                • Size 409B
                • SHA256 56c2ecc106829db1020d48fe49a4802a4ee24875a8a873fff86ff0c413a3e226
                • MD5 SHA1 SHA512

                default_hash.JS

                • Path C:\Users\Admin\AppData\Roaming\default_hash.JS
                • Size 136B
                • SHA256 c062646586359c92950920a9e5a51bcec73afeb863dc01337a88adadc789f05e
                • MD5 SHA1 SHA512

                setup.ISS

                • Path C:\Users\Admin\AppData\Roaming\setup.ISS
                • Size 241B
                • SHA256 f19b204261a5524ed3f5204fbd01d91f06fe1b2181b2fa2c2c7629ccb4e54b16
                • MD5 SHA1 SHA512

                desktop.ini

                • Path F:\$RECYCLE.BIN\S-1-5-18\desktop.ini
                • Size 129B
                • SHA256 e1b9ce9b57957b1a0607a72a057d6b7a9b34ea60f3f8aa8f38a3af979bd23066
                • MD5 SHA1 SHA512

                memory/808-179-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-196-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-155-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-158-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-157-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-163-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-161-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-3547-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/808-367-0x000000001EF20000-0x000000001EF97000-memory.dmp

                memory/1932-141-0x0000000000D50000-0x0000000000D60000-memory.dmp

                memory/2156-152-0x0000000000990000-0x0000000000BDB000-memory.dmp

                memory/2380-64-0x0000000002300000-0x0000000002310000-memory.dmp

                memory/3208-73-0x0000000000A00000-0x0000000000C4B000-memory.dmp

                memory/3208-72-0x0000000000400000-0x00000000004A4600-memory.dmp

                memory/3208-70-0x0000000000400000-0x00000000004A5000-memory.dmp

                memory/3208-71-0x00000000007E0000-0x00000000009FA000-memory.dmp

                memory/3208-68-0x0000000000400000-0x00000000004A5000-memory.dmp