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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 10:52

General

  • Target

    41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe

  • Size

    1.8MB

  • MD5

    6c60e89e9a2bd99018da4930811f5f17

  • SHA1

    6bbf67b1133ad3e97268c6b49c81b5c87d56d22c

  • SHA256

    41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0

  • SHA512

    bd288744433405b6760676c82b3efbb163508506c1645b8b07102738f8f02a3b8fc0420fc22da3a74354e6af3be7d79c5e7df511983913c1912d73cdbc8b833e

  • SSDEEP

    49152:tIiiK2S7ndMn8Oj/xNzvaT55ItITY2DV1ttwyNrDI:qiiK2Ina8Oz/mT55IIF1ttwyNrDI

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 3 IoCs

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

  • 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe
    "C:\Users\Admin\AppData\Local\Temp\41033e4baaf4d0de22e736c67f4c7ea7a57c145bcf16cf9360b30a49739334e0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1364
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 2428
        3⤵
        • Program crash
        PID:4832
    • C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
      C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2640
        • C:\Windows\SysWOW64\chcp.com
          chcp 1251
          4⤵
            PID:1056
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
            4⤵
            • Creates scheduled task(s)
            PID:5104
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1364 -ip 1364
      1⤵
        PID:3116

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\Are.docx

        Filesize

        11KB

        MD5

        a33e5b189842c5867f46566bdbf7a095

        SHA1

        e1c06359f6a76da90d19e8fd95e79c832edb3196

        SHA256

        5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

        SHA512

        f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

      • C:\ProgramData\mozglue.dll

        Filesize

        287KB

        MD5

        801fb336a45afb9c6dc7e97fff65edb1

        SHA1

        383f49c069d276417f9243eedf6a808bc880cc78

        SHA256

        ef480a4ba7773186ccaa892cbc81a2a687200081a150324ff5058bd475db9a67

        SHA512

        86a06b55374a296d62d8d54723de899b6f77c2b153e0f772ee4a241961cdb493b3c171b675bac4f7c80d7c616514fb87405fa65609098486b8bcdfb042d0a51e

      • C:\ProgramData\mozglue.dll

        Filesize

        79KB

        MD5

        8c4d332bf829dd684f27a5c8589b9cf8

        SHA1

        f49cb8ca049ad4467653404e634bd15968f80ae8

        SHA256

        6189ae6af7dcdc22a07f902c32c54e13e38d8449200a8ceed0c9633f1c5014ef

        SHA512

        67278141fec8e4ce9ca8a80b673dcf193d787af8deb5116dc20693cbdd3ff5871ea744c22599faae5750c509885fcca3be5b3dab20195cb13f0dbdc81287317c

      • C:\ProgramData\nss3.dll

        Filesize

        278KB

        MD5

        2ebe96af5efbed6ba453aeb28e0e1d89

        SHA1

        6fec70184a5247b2b49866d507c3ebd5500aca36

        SHA256

        a2986db11ff395650afc80b3d20e51d8f61a1607996d2f850c0d7362e79c5230

        SHA512

        b9b08f1c5f19190c5bb7be525146f8743b5d1ce89034fbbab1e6d4bba2775830098d57a553d880e492a8669ce8daa17e113cd506aab84ac7a22727583d26e564

      • C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe

        Filesize

        1.7MB

        MD5

        eee5ddcffbed16222cac0a1b4e2e466e

        SHA1

        28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

        SHA256

        2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

        SHA512

        8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

      • C:\Users\Admin\AppData\Local\Temp\nsn6709.tmp\INetC.dll

        Filesize

        21KB

        MD5

        2b342079303895c50af8040a91f30f71

        SHA1

        b11335e1cb8356d9c337cb89fe81d669a69de17e

        SHA256

        2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

        SHA512

        550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

      • C:\Users\Admin\AppData\Local\Temp\syncUpd.exe

        Filesize

        223KB

        MD5

        4798812066cbae4409c74a92f61d89be

        SHA1

        f22ae1face4df9e4ab6445a6e43eedd12c8af868

        SHA256

        17102324a533f9666f6d2a9a9269807f9b49591a20ff7fd4045c43b432ac0079

        SHA512

        e55b78580a1aa1ab9e262ddb57ae95759d459ab75db99459882a22f05310e2e53131f05e0f110ed0cf2056b18f8671272eabda5cbd21667cd51be5754e4c3e56

      • C:\Users\Admin\AppData\Roaming\Temp\Task.bat

        Filesize

        128B

        MD5

        11bb3db51f701d4e42d3287f71a6a43e

        SHA1

        63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

        SHA256

        6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

        SHA512

        907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

      • memory/1364-18-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1364-88-0x0000000000400000-0x0000000001A25000-memory.dmp

        Filesize

        22.1MB

      • memory/1364-111-0x0000000000400000-0x0000000001A25000-memory.dmp

        Filesize

        22.1MB

      • memory/1364-72-0x0000000000400000-0x0000000001A25000-memory.dmp

        Filesize

        22.1MB

      • memory/1364-79-0x0000000001B00000-0x0000000001C00000-memory.dmp

        Filesize

        1024KB

      • memory/1364-83-0x0000000000400000-0x0000000001A25000-memory.dmp

        Filesize

        22.1MB

      • memory/1364-10-0x0000000001B00000-0x0000000001C00000-memory.dmp

        Filesize

        1024KB

      • memory/1364-11-0x0000000003670000-0x0000000003697000-memory.dmp

        Filesize

        156KB

      • memory/1364-12-0x0000000000400000-0x0000000001A25000-memory.dmp

        Filesize

        22.1MB

      • memory/4888-63-0x0000000000400000-0x0000000000459000-memory.dmp

        Filesize

        356KB

      • memory/5028-65-0x00000000027E0000-0x00000000027E1000-memory.dmp

        Filesize

        4KB

      • memory/5028-87-0x0000000000400000-0x0000000000930000-memory.dmp

        Filesize

        5.2MB

      • memory/5028-64-0x0000000000400000-0x0000000000930000-memory.dmp

        Filesize

        5.2MB

      • memory/5028-113-0x00000000027E0000-0x00000000027E1000-memory.dmp

        Filesize

        4KB