Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/02/2025, 14:22

General

  • Target

    d.msi

  • Size

    2.9MB

  • MD5

    5297df4268c31105df6d2fc39437d294

  • SHA1

    df8d187c76abf86b8c7f3061723232424c6a7f2c

  • SHA256

    696ed13d119273602770a67ac8015544cabba93a8316816e4fbdda5794b35399

  • SHA512

    5fdd3cc4dfa1962a769138fece7a1ca9262d6503fe3a10838b6356d8fbe7081f841beb30bffbf0cc4966f863e63d420c05f9f903c7621da6130fea2e7ed85ad5

  • SSDEEP

    49152:wL51ahTWxFOlm43he+4Xkt1i1XkIZ9fm5urK7olHgnIxQQ6brit:A8h8ME4xr461ckZPoxgnsSa

Malware Config

Extracted

Family

remcos

Botnet

v2

C2

185.157.162.126:1995

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    qsdazeazd-EL00KX

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Hijackloader family
  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\d.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1136
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1972
      • C:\Users\Admin\AppData\Local\IXXinstall\EHttpSrv.exe
        "C:\Users\Admin\AppData\Local\IXXinstall\EHttpSrv.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\SysWOW64\cmd.exe
          3⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3248
          • C:\Users\Admin\AppData\Local\IXXinstall\EHttpSrv.exe
            C:\Users\Admin\AppData\Local\IXXinstall\EHttpSrv.exe
            4⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:2280
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:1144

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e581db5.rbs

      Filesize

      10KB

      MD5

      83a943b7d806063dd550727d347b2ead

      SHA1

      6b2ff53034403370c092de70ecdf1532b18dcff2

      SHA256

      0d8766e9484ef36f8d8f9ee845e53ce679a67b0e659ba3b1c9097492b5dbcc5a

      SHA512

      764f9270e0d24f96b8f834dc79a4dc22dc20c028a1a115cd73bb9c6d8ce025eb7c8f805c6bbac651f191aad0d54c78596d428ce7429b29abaf1a0b0bdf671bbd

    • C:\Users\Admin\AppData\Local\IXXinstall\EHttpSrv.exe

      Filesize

      20KB

      MD5

      9329ba45c8b97485926a171e34c2abb8

      SHA1

      20118bc0432b4e8b3660a4b038b20ca28f721e5c

      SHA256

      effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

      SHA512

      0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

    • C:\Users\Admin\AppData\Local\IXXinstall\audiogram.tif

      Filesize

      877KB

      MD5

      5124236fd955464317fbb1f344a1d2f2

      SHA1

      fe3a91e252f1dc3c3b4980ade7157369ea6f5097

      SHA256

      ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

      SHA512

      2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

    • C:\Users\Admin\AppData\Local\IXXinstall\http_dll.dll

      Filesize

      1.9MB

      MD5

      fe47e255c704b20cb20c8ed93ec94d47

      SHA1

      ed7d26624b3cfaa72cf7d3bc59d26845fb84247a

      SHA256

      b0d665cb466e10ef90e1d79a39cb655ebe785d0cefc074f7a22d04936b681879

      SHA512

      55813a4b755773f98991b47294fed03b23d5bee9af3ef98727b7345882fe0d9976546f46847fbc30119e7c62ce7ee8ae21f54065922041cf8d42364e607bc1c0

    • C:\Users\Admin\AppData\Local\IXXinstall\mfc80u.dll

      Filesize

      1.0MB

      MD5

      686b224b4987c22b153fbb545fee9657

      SHA1

      684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

      SHA256

      a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

      SHA512

      44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

    • C:\Users\Admin\AppData\Local\Temp\ecc4ba1a

      Filesize

      1.0MB

      MD5

      098ed9956e419f43a05461c3096c7b38

      SHA1

      7b687237f839379774d99131ebaebbf633cca266

      SHA256

      85ee0c1729d8348962650a5abd8c1a547f9550f06a278078cbf992a3746173ae

      SHA512

      8c415df24003633cdb91c954b56ad149b185d3fcf92abf74befbeb47cf71d58a8e3de30124ced5126c41cf5838a698e114db0b4a7daff1027ffb2e5f381dde0f

    • C:\Windows\Installer\e581db4.msi

      Filesize

      2.9MB

      MD5

      5297df4268c31105df6d2fc39437d294

      SHA1

      df8d187c76abf86b8c7f3061723232424c6a7f2c

      SHA256

      696ed13d119273602770a67ac8015544cabba93a8316816e4fbdda5794b35399

      SHA512

      5fdd3cc4dfa1962a769138fece7a1ca9262d6503fe3a10838b6356d8fbe7081f841beb30bffbf0cc4966f863e63d420c05f9f903c7621da6130fea2e7ed85ad5

    • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

      Filesize

      24.1MB

      MD5

      892c6d289f92156134d8d2bd494404cf

      SHA1

      cb8bc388cd32a4232f9256998f4d513a59aa6b6d

      SHA256

      d8535627d8af81518532d4434504cb26582b9d49f69b87e711a0c38752a0413d

      SHA512

      e4dbfc39cdd5e65218464ff7d6d829a2415b1a6c91545754579328548053324948a5078f65f3b985d2726fcfb15ad20c9408f786dbe5001df880cef23248483b

    • \??\Volume{27205db7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{c206264a-156e-4c63-8455-6d3567375b2f}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      12774ad21cea9efba057588c8a1e9167

      SHA1

      8f0c6cb45ef9683205ce7d3e9893e44e4c4d5c71

      SHA256

      cba6d516adc6bf24210cf2bebb3767c89c092b86457267a01278f432877d33b8

      SHA512

      491fdd8e7588b1713afd82d395e6558c1d9ab30babbc716740a660ab313d6fc0317b0ce3bc15a6f68c95cadca555e6d78bd1cce26473b5e753c94715e566b7db

    • memory/1708-37-0x0000000074A30000-0x0000000074BAB000-memory.dmp

      Filesize

      1.5MB

    • memory/1708-38-0x0000000074A30000-0x0000000074BAB000-memory.dmp

      Filesize

      1.5MB

    • memory/2280-58-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-61-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-47-0x0000000072F30000-0x0000000074184000-memory.dmp

      Filesize

      18.3MB

    • memory/2280-49-0x00007FFA9EE50000-0x00007FFA9F045000-memory.dmp

      Filesize

      2.0MB

    • memory/2280-50-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-56-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-57-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-64-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-59-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-60-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-63-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2280-62-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/3248-45-0x0000000074A30000-0x0000000074BAB000-memory.dmp

      Filesize

      1.5MB

    • memory/3248-41-0x00007FFA9EE50000-0x00007FFA9F045000-memory.dmp

      Filesize

      2.0MB