Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-02-2025 03:56

General

  • Target

    a326bbb242a11e0cd4155f58bcffa36b99487cf0d655359fd161e905577d8254.msi

  • Size

    2.9MB

  • MD5

    91e248c8a0b605eb3302dd8c036c3392

  • SHA1

    0877c798687043d14b7d4aeca03e3ed960ac1689

  • SHA256

    a326bbb242a11e0cd4155f58bcffa36b99487cf0d655359fd161e905577d8254

  • SHA512

    31efcbce7ea057ca7b6c6183097a7b367d4b93dfbe6f88fd4306ba3b7dd65b181dc8fd518b5de8c1f0b078578ae6cd268d5f710389dc99e9e55b33126ffc2539

  • SSDEEP

    49152:qL51ahTWxFOlm43he+4Xkt1i1XkIZ9fm5urK7olHgnIxQQ6brit:K8h8ME4xr461ckZPoxgnsSa

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
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Downloads MZ/PE file 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 4 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

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

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

  • Suspicious behavior: EnumeratesProcesses 8 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\a326bbb242a11e0cd4155f58bcffa36b99487cf0d655359fd161e905577d8254.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:5104
  • 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:3768
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5112
      • 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:844
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\SysWOW64\cmd.exe
          3⤵
          • Drops startup file
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4312
          • 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:5104
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:4784
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI5IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTI0ODY4NDY3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:4192

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Config.Msi\e57f742.rbs

      Filesize

      10KB

      MD5

      bd929db570a2c75166ad72bd7e7143e1

      SHA1

      9cff0846edc889e2fb0b096ab625e3d589aad7b2

      SHA256

      34aa9cfecc035dcd007c133feb549bf2e10c45ec1520c343978de734625f6ab4

      SHA512

      9c1f3ffdb82cbe0adc36609a32fd62432b843739b790802e2a7b4660b74a00605fd868733cbbf19e833468da33e3d76a4bc12c49fd3481f5a53295e2568e75a3

    • C:\Users\Admin\AppData\Local\Temp\af1867d6

      Filesize

      1.0MB

      MD5

      9eeb90382fe59b3719faa1df188bde21

      SHA1

      c9a38b7791bb367801e0caa153231cfef8813d48

      SHA256

      935ab7d9941aabd71acdb49866fdcc6d4ded1709ead957fe8e570d9b8ae225e2

      SHA512

      ebd3c34095d07bad61c4914c4c626c421e76c6a9aedfb8abf19ecb2a696be733efc89a8779f8f7f22936bac91f7bd5ef43400b267b55c6789fb3f5f63f34c18e

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

      Filesize

      903B

      MD5

      b3e0a5207cfe1d526fc83631f61ffe0f

      SHA1

      00aa66170c41654116f3c51be46efb18c994650a

      SHA256

      348cd0d48473b06d5d76121c613f3c636c9dd3f151bc381b20554a6f12a1289a

      SHA512

      17024747d15706251abe839e001e9b574403256c18bdadad38815dddbfc22b7866953b8d650a1fc44cda15390c4c616588b0932db3ec0fc3c6c5cd10868b7ce9

    • 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\e57f741.msi

      Filesize

      2.9MB

      MD5

      91e248c8a0b605eb3302dd8c036c3392

      SHA1

      0877c798687043d14b7d4aeca03e3ed960ac1689

      SHA256

      a326bbb242a11e0cd4155f58bcffa36b99487cf0d655359fd161e905577d8254

      SHA512

      31efcbce7ea057ca7b6c6183097a7b367d4b93dfbe6f88fd4306ba3b7dd65b181dc8fd518b5de8c1f0b078578ae6cd268d5f710389dc99e9e55b33126ffc2539

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

      Filesize

      24.1MB

      MD5

      6b974525985d7104726ff2dbf1a1b031

      SHA1

      d36b718f5feb0c61e48fabea89f3a2c082d15c1a

      SHA256

      13e9677e0f0bdb0527c5cf8bef66389e71e4ed4b5308e999690e63c00c688db2

      SHA512

      2824a632dc46a8ffed7f785592e17496d866509a036b41e85ea84cf0585370511432280bf1168a97c2d51c0de616cb9f04e4189a78c64a41c2289a9fcae0986a

    • \??\Volume{50c46ab9-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{d20316b4-dd99-4afd-b941-e08f32c02966}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      1a115820a236b45aaf4b01babb8b2b66

      SHA1

      09449d81556648f7937a22ce1c2c6047dd08dcb0

      SHA256

      0f5348027ed63934dfa0d9e7e8eb0478d95ad159147b6165b7b6d2548c48fb07

      SHA512

      a10711922bbdc5f4b60ba0d76bb7b9011d7996a80569afa312bec6ca8013a066026080bc875f27ce987f1163da710dec9e64ca842f1b1d8bfc2ad742074414d4

    • memory/844-39-0x00000000743F0000-0x000000007456B000-memory.dmp

      Filesize

      1.5MB

    • memory/844-38-0x00000000743F0000-0x000000007456B000-memory.dmp

      Filesize

      1.5MB

    • memory/4312-42-0x00007FFBEC4F0000-0x00007FFBEC6E5000-memory.dmp

      Filesize

      2.0MB

    • memory/4312-50-0x00000000743F0000-0x000000007456B000-memory.dmp

      Filesize

      1.5MB

    • memory/5104-58-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-57-0x00007FFBEC4F0000-0x00007FFBEC6E5000-memory.dmp

      Filesize

      2.0MB

    • memory/5104-52-0x0000000072FC0000-0x0000000074214000-memory.dmp

      Filesize

      18.3MB

    • memory/5104-61-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-62-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-63-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-64-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-65-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB

    • memory/5104-66-0x0000000000410000-0x0000000000494000-memory.dmp

      Filesize

      528KB