Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2025, 03:15

General

  • Target

    696ed13d119273602770a67ac8015544cabba93a8316816e4fbdda5794b35399.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\696ed13d119273602770a67ac8015544cabba93a8316816e4fbdda5794b35399.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3808
  • 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:2176
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3164
      • 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:4004
        • 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:1284
          • 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:4404
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:4456

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e57b537.rbs

      Filesize

      10KB

      MD5

      d4dc77e8d111e0e43d225ee6281e74a1

      SHA1

      0c96d42a8143d32749707c6fddb8c16400fce53f

      SHA256

      2fee4433a596b9ad1ebf5f380b909870d9af22c73da076fcd9b7756749074726

      SHA512

      8af3c88ee97fb877dca6ab0f98a59b6fd72c63df118b29de6288bd200b2a05b31391b7134fd7cb2c87e570f14cc4acac9b3e94b2d78b0c358c877b3fac2fc2c0

    • 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\4bcae9b2

      Filesize

      1.0MB

      MD5

      56f26648fb9fd5bfa2bcbc071beaa9e8

      SHA1

      861a4688d4b225ad52b6b0c9220c1edccd748683

      SHA256

      5ed68f9434d4f001c0e29e9300fdcd9a37c4b040ece664f3293e63d3862141f1

      SHA512

      0ccc36998e19cb2b889d4edca4a55116165cf48ccd8c00f11cd2ac879701db7068218e9c1251b1c56754b58f391c17926d767e64c078f9d34182cc938db88dd8

    • C:\Windows\Installer\e57b536.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

      ac76cc6c46db2e451975e5d076c2820b

      SHA1

      72cb9632a70ea93a79f2830551cec43e7872c552

      SHA256

      d22ae0c9a671dbbea7c25da276998b5737cb48424940db81ee220e5765a3016a

      SHA512

      ab0fd60bc8c3584c0623f0feb7daced0f3378e429fc7904121633dee56ea3246796e91f4edd3809a7221d6e02b6e1d47156fa67fb76a6be9e50add6c84e53f1e

    • \??\Volume{241e48af-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{2a1bdeeb-e4b3-4679-996e-e1d3a50aeca9}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      e4a10c87ffff58e883a07146d4d5768b

      SHA1

      8302ccea7ddf63749e24a239e116277f68b75f34

      SHA256

      aa72074492272268b60dc624b8996de5fdb356c8e81a27a10697880e6fc847fc

      SHA512

      eccf5be80884759539b0602374cc7a35128c9519bd5d9dc885ce16f9be2f015b3e575bd32356ecd390ba8f877cea43dd7543bb20f0250d9124a0668fb3be930a

    • memory/1284-45-0x0000000075670000-0x00000000757EB000-memory.dmp

      Filesize

      1.5MB

    • memory/1284-41-0x00007FFFE7A10000-0x00007FFFE7C05000-memory.dmp

      Filesize

      2.0MB

    • memory/4004-37-0x0000000075670000-0x00000000757EB000-memory.dmp

      Filesize

      1.5MB

    • memory/4004-38-0x0000000075670000-0x00000000757EB000-memory.dmp

      Filesize

      1.5MB

    • memory/4404-58-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-49-0x00007FFFE7A10000-0x00007FFFE7C05000-memory.dmp

      Filesize

      2.0MB

    • memory/4404-50-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-53-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-57-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-47-0x0000000073B70000-0x0000000074DC4000-memory.dmp

      Filesize

      18.3MB

    • memory/4404-59-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-60-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-61-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-62-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-63-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-64-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/4404-65-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB