Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/01/2025, 10:06

General

  • Target
    JaffaCakes118_644e4d14dc2e71ecc9d70a2da540a360.exe
  • Size 618KB
  • Sample250102-l494jsxjft
  • SHA256 330558405a5486392d856908bf7592473c817685d266289b425e93a676661bee
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Expiro family
  • Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

  • Expiro payload 1 IoCs
  • Disables taskbar notifications via registry modification
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Windows security modification 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops Chrome extension 1 IoCs
  • Enumerates connected drives 3 TTPs 42 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 44 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_644e4d14dc2e71ecc9d70a2da540a360.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_644e4d14dc2e71ecc9d70a2da540a360.exe"
    1⤵
    • Drops Chrome extension
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1360
  • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
    "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
    1⤵
    • Executes dropped EXE
    • Windows security modification
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:3956
  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe"
    1⤵
    • Executes dropped EXE
    PID:2348
  • C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
    "C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"
    1⤵
    • Executes dropped EXE
    PID:3448
  • \??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE
    "c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"
    1⤵
    • Executes dropped EXE
    PID:1960
  • C:\Windows\System32\OpenSSH\ssh-agent.exe
    C:\Windows\System32\OpenSSH\ssh-agent.exe
    1⤵
    • Executes dropped EXE
    PID:1980

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        elevation_service.exe

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\elevation_service.exe
        • Size 2.1MB
        • SHA256 898a2ff02092af06ad587e78e823a2784e55040b755c6af39123b5411a40c004
        • MD5 SHA1 SHA512 SSDEEP

        maintenanceservice.exe

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
        • Size 781KB
        • SHA256 bb57d9cfbc3b9f4111bbb1c7e4e8bb8e2a2b65f56c7ae143695d9dc18e83509e
        • MD5 SHA1 SHA512 SSDEEP

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 1.1MB
        • SHA256 9b45ce9c58dede2cc4c5170a0382214108937cd5786bcdcabc1aa8d58b434b8a
        • MD5 SHA1 SHA512 SSDEEP

        7zFM.exe

        • Path C:\Program Files\7-Zip\7zFM.exe
        • Size 1.5MB
        • SHA256 b895e7d3da5b13888d23f4dd98417f80f9d22a8b947c2b08b313cebf5ad1a851
        • MD5 SHA1 SHA512 SSDEEP

        7zG.exe

        • Path C:\Program Files\7-Zip\7zG.exe
        • Size 1.2MB
        • SHA256 ffe242b19dfbb45db12f55289d32d1991b927a9fb9baa6e72b2fbe67efea79a2
        • MD5 SHA1 SHA512 SSDEEP

        AppVShNotify.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe
        • Size 832KB
        • SHA256 4966a0a14b73aac3d332fe205dbe016f8a69c7226a3236b5b744e14e2f87778c
        • MD5 SHA1 SHA512 SSDEEP

        IntegratedOffice.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe
        • Size 4.6MB
        • SHA256 1dc143d818ead09dbaa49f232dd6f4308ae8ef1973547e480041e2ae2c0f2816
        • MD5 SHA1 SHA512 SSDEEP

        MavInject32.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe
        • Size 898KB
        • SHA256 5bc8bf66ceb23d05c6dabaf7c0ca4573d6e738f98ef0ec23b9c58ce317d5162c
        • MD5 SHA1 SHA512 SSDEEP

        OfficeC2RClient.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe
        • Size 24.0MB
        • SHA256 96b1b067dd084b14eab6837848a28b5236c302918ba433b098d61faf5c2af610
        • MD5 SHA1 SHA512 SSDEEP

        appvcleaner.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe
        • Size 2.7MB
        • SHA256 67dfa4a16b9fda06d8a05d2286b7bedfdf9a7fe0f5ce9e678233eeb9215a45e1
        • MD5 SHA1 SHA512 SSDEEP

        OSE.EXE

        • Path C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE
        • Size 797KB
        • SHA256 1021c03eceb59a2b06c0fbba923f69e76d5c5be9e752147859d42be24d852d47
        • MD5 SHA1 SHA512 SSDEEP

        cpkcoelj.tmp

        • Path C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\cpkcoelj.tmp
        • Size 4.6MB
        • SHA256 f0c9f20f01c8dde26ec798c5aff2b9e085b21d4692f771e25b214e3b46f5f14f
        • MD5 SHA1 SHA512 SSDEEP

        elevation_service.exe

        • Path C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
        • Size 2.1MB
        • SHA256 62acf5047c7f408dc1b0170471df5bbc3852c11715d30c7dc447cdaaf183a9c1
        • MD5 SHA1 SHA512 SSDEEP

        iexplore.exe

        • Path C:\Program Files\Internet Explorer\iexplore.exe
        • Size 1.3MB
        • SHA256 330edf0ecd72713d91e50d4655d6e2be2d403218a8161d8055ddaaf4fc307769
        • MD5 SHA1 SHA512 SSDEEP

        powershell.exe

        • Path C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        • Size 978KB
        • SHA256 9c9b1fe48004cbc4e56b7a4ee9f7953d466d04e1fb9d5be9b01ccdb2383def2c
        • MD5 SHA1 SHA512 SSDEEP

        ssh-agent.exe

        • Path C:\Windows\System32\OpenSSH\ssh-agent.exe
        • Size 932KB
        • SHA256 79f6d3e9c709771397fe91067886b715eb4b7b8e15c270ed3ce3245bb08528f9
        • MD5 SHA1 SHA512 SSDEEP

        jqideopp.tmp

        • Path C:\Windows\System32\jqideopp.tmp
        • Size 1.3MB
        • SHA256 0d191f66d2c53188a9e32186a96f6963945999245e8f343ea9145c1d79ce9485
        • MD5 SHA1 SHA512 SSDEEP

        wmpnetwk.exe

        • Path \??\c:\program files\windows media player\wmpnetwk.exe
        • Size 1.5MB
        • SHA256 bf8daef3f769b628f473010ad0c48303126c8f852970fb3464c95339b9c5cb37
        • MD5 SHA1 SHA512 SSDEEP

        Agentservice.exe

        • Path \??\c:\windows\system32\Agentservice.exe
        • Size 1.7MB
        • SHA256 06afb74b30145d64722cbc3677dcf8c0e262f742be5fabb75739e8f9d5b4096d
        • MD5 SHA1 SHA512 SSDEEP

        fxssvc.exe

        • Path \??\c:\windows\system32\fxssvc.exe
        • Size 1.2MB
        • SHA256 bcff342977d45520aafb85662e56a865fe0e3962a1839b1491dcb0ad1114e3f5
        • MD5 SHA1 SHA512 SSDEEP

        msdtc.exe

        • Path \??\c:\windows\system32\msdtc.exe
        • Size 700KB
        • SHA256 870af49d0987a236700c067942f898532bddf8e3a93c3d0d283fce33628f6fec
        • MD5 SHA1 SHA512 SSDEEP

        msiexec.exe

        • Path \??\c:\windows\system32\msiexec.exe
        • Size 623KB
        • SHA256 a73ac7fe63214b9477af2df528019b14dbb9884f6478b74d98ff44d6217a4e4c
        • MD5 SHA1 SHA512 SSDEEP

        snmptrap.exe

        • Path \??\c:\windows\system32\snmptrap.exe
        • Size 572KB
        • SHA256 a1c35622799d524ab9a5bbbdccb4c0d5889321f53290d88be6569b3db2ed7988
        • MD5 SHA1 SHA512 SSDEEP

        wbengine.exe

        • Path \??\c:\windows\system32\wbengine.exe
        • Size 2.1MB
        • SHA256 98ebd6f6e5818bb03e7f81315179832f8b85b89046489dbff8561bc4743e3fc9
        • MD5 SHA1 SHA512 SSDEEP

        memory/1360-2-0x0000000001000000-0x000000000125A000-memory.dmp

        memory/1360-1-0x000000000100B000-0x000000000100D000-memory.dmp

        memory/1360-0-0x0000000001000000-0x000000000125A000-memory.dmp

        memory/1960-166-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/1960-154-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/1960-61-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/1960-67-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/1980-182-0x0000000140000000-0x00000001402E6000-memory.dmp

        memory/1980-75-0x0000000140000000-0x00000001402E6000-memory.dmp

        memory/2348-118-0x0000000140000000-0x000000014040F000-memory.dmp

        memory/2348-29-0x0000000140000000-0x000000014040F000-memory.dmp

        memory/2348-28-0x0000000140000000-0x000000014040F000-memory.dmp

        memory/3448-59-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/3448-37-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/3448-36-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/3956-117-0x0000000140000000-0x0000000140418000-memory.dmp

        memory/3956-21-0x00000001400B2000-0x00000001400B3000-memory.dmp

        memory/3956-20-0x0000000140000000-0x0000000140418000-memory.dmp