Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/02/2025, 06:03

General

  • Target

    f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad.msi

  • Size

    2.9MB

  • MD5

    ae5b94abf028388af1454ed76806cc6f

  • SHA1

    ef013c7eec6fc6c14ccd414b5eb87abf1476566a

  • SHA256

    f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad

  • SHA512

    b88c3c160b68b0bdc03780a6848001aef7baa5532b815071eb4f26ff1caa87f71b2401b0c507db5389d14517310bae758aaa17f6fe7aa508f2de38cdbcac1fe2

  • SSDEEP

    49152:TL51ahTWxFOlm43he+4Xkt1i1XkIZ9fm5urK7olHgnIxQQ6brit:p8h8ME4xr461ckZPoxgnsSa

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\f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4464
  • 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:3812
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3128
      • C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
        "C:\Users\Admin\AppData\Roaming\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:1996
        • 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:540
          • C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
            C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
            4⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:2360
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:2912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e5797dc.rbs

      Filesize

      10KB

      MD5

      75e3d75d85cfdb1b3593c4ae679a6337

      SHA1

      bf4ff3806f802c6718e1dd0546c601631d3777bf

      SHA256

      f2763141f59c03d11777d9759ebd6a6a2542095a4288f21c954c63c069c17c2b

      SHA512

      39eb3ae42e7a11c0babab1534751e1b16e8831177c9396ec743fe4cddd8b07996279818404151d670213bbb2f52d1b712141364880d5c16735e2ac54eb28650e

    • C:\Users\Admin\AppData\Local\Temp\1e14e56c

      Filesize

      1.0MB

      MD5

      3079622dd2bb34f98f42b2a812d5b309

      SHA1

      83c66341332995eef5c59076181efe35c8ef3427

      SHA256

      81211dcc7c6442b948a4bd7fac536714026050d33c02662d73966849700a2e27

      SHA512

      6838bb5c4fbed7e7c31338ec88d880c18afbdbc491cd0340d9a831747dc9788e32b9d98765703877ecb151f107ee893afc8633e335de48e0bab6f6f763af541e

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

      Filesize

      20KB

      MD5

      9329ba45c8b97485926a171e34c2abb8

      SHA1

      20118bc0432b4e8b3660a4b038b20ca28f721e5c

      SHA256

      effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

      SHA512

      0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

    • C:\Users\Admin\AppData\Roaming\IXXinstall\MFC80U.DLL

      Filesize

      1.0MB

      MD5

      686b224b4987c22b153fbb545fee9657

      SHA1

      684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

      SHA256

      a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

      SHA512

      44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

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

      Filesize

      877KB

      MD5

      5124236fd955464317fbb1f344a1d2f2

      SHA1

      fe3a91e252f1dc3c3b4980ade7157369ea6f5097

      SHA256

      ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

      SHA512

      2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

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

      Filesize

      1.9MB

      MD5

      fe47e255c704b20cb20c8ed93ec94d47

      SHA1

      ed7d26624b3cfaa72cf7d3bc59d26845fb84247a

      SHA256

      b0d665cb466e10ef90e1d79a39cb655ebe785d0cefc074f7a22d04936b681879

      SHA512

      55813a4b755773f98991b47294fed03b23d5bee9af3ef98727b7345882fe0d9976546f46847fbc30119e7c62ce7ee8ae21f54065922041cf8d42364e607bc1c0

    • C:\Windows\Installer\e5797db.msi

      Filesize

      2.9MB

      MD5

      ae5b94abf028388af1454ed76806cc6f

      SHA1

      ef013c7eec6fc6c14ccd414b5eb87abf1476566a

      SHA256

      f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad

      SHA512

      b88c3c160b68b0bdc03780a6848001aef7baa5532b815071eb4f26ff1caa87f71b2401b0c507db5389d14517310bae758aaa17f6fe7aa508f2de38cdbcac1fe2

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

      Filesize

      24.1MB

      MD5

      43e285e3716d2212d331f7ffd0c18c35

      SHA1

      bc0a4e63abfbd537595a34000d7220d9dc581104

      SHA256

      1b7503dff20b54c68a2c8dd3f1173fb74c450f0799a004ebd7d2f333454cdcc4

      SHA512

      dafe969993b1c605008c7146f5e85a042df2a011800aa0ccf3335b0fb5acc24d2b2a10e84a0fb3c6e036dd3fb29f275355944f342a287284312a802b30f7429c

    • \??\Volume{24b92e62-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{f0643d0c-98d0-46c8-bf5d-a28fcb5a02d7}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      2843a0f24ef5a28b794df74275a70633

      SHA1

      d59c80edd9519bf04fabd9191a18077c1a797f24

      SHA256

      a9ac175e77f374bc4cd130bfd8efa0c73f6c203c497b23108903c928864ae362

      SHA512

      290ed428c5403b21a1e528e6c83d587e5f064befb9c61a3b41090b7a542cdf2843981c81e7faa209ccebc5f0aa69a449914844e7fd96d3bd254357ca90cc9473

    • memory/540-45-0x0000000074F90000-0x000000007510B000-memory.dmp

      Filesize

      1.5MB

    • memory/540-41-0x00007FFB60570000-0x00007FFB60765000-memory.dmp

      Filesize

      2.0MB

    • memory/1996-37-0x0000000074F90000-0x000000007510B000-memory.dmp

      Filesize

      1.5MB

    • memory/1996-38-0x0000000074F90000-0x000000007510B000-memory.dmp

      Filesize

      1.5MB

    • memory/2360-58-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-49-0x00007FFB60570000-0x00007FFB60765000-memory.dmp

      Filesize

      2.0MB

    • memory/2360-50-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-53-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-57-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-47-0x0000000073490000-0x00000000746E4000-memory.dmp

      Filesize

      18.3MB

    • memory/2360-59-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-60-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-61-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-62-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-63-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-64-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/2360-65-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB