Analysis

  • max time kernel
    299s
  • max time network
    304s
  • platform
    windows7_x64
  • resource
    win7-20241010-es
  • resource tags

    arch:x64arch:x86image:win7-20241010-eslocale:es-esos:windows7-x64systemwindows
  • submitted
    09-12-2024 15:24

General

  • Target

    formulario_agendamiento_citas.zip

  • Size

    7.0MB

  • MD5

    b3d078f52643fa3fb774af59ae6973ee

  • SHA1

    038fa27457912ce1cabc9e09e69b44de01b1b6bd

  • SHA256

    cafc1506bb64c57cf27985a99d3f5cf2e22fdd3305a76ce4a10ea8cb1bf81c41

  • SHA512

    7a0c50958b0bb8eba2af07b1e96645ac5ea503e69c38c62006bff10b7957295bac156a092ef43a0c2e628ecb5b1bd80396370534519e2fc5bded94daa81ce51f

  • SSDEEP

    196608:CRvG2kSHzhFB5kmJJyV2eL8HBpfIC5CFPZ:HNELrkmJlGsACMx

Malware Config

Extracted

Family

remcos

Botnet

DICIEMBRE 05 MUCHACHA

C2

imaxatmonk.imaxatmonk.com:2204

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Acobatlg.exe

  • copy_folder

    edqelofh

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    pixlrfla

  • mouse_option

    false

  • mutex

    increarltda-GIGCIT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Remcos family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 23 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 11 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\formulario_agendamiento_citas.zip"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2000
  • C:\Windows\System32\msiexec.exe
    "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\Desktop\formulario_agendamiento_citas.msi"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2732
  • C:\Windows\System32\msiexec.exe
    "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\Desktop\formulario_agendamiento_citas.msi"
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1684
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Users\Admin\AppData\Local\Sleigh\EASteamProxy.exe
      "C:\Users\Admin\AppData\Local\Sleigh\EASteamProxy.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:952
      • C:\Users\Admin\AppData\Roaming\signremote_v2\EASteamProxy.exe
        C:\Users\Admin\AppData\Roaming\signremote_v2\EASteamProxy.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1636
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\SysWOW64\cmd.exe
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2456
          • C:\Users\Admin\AppData\Local\Temp\sw_ultra.exe
            C:\Users\Admin\AppData\Local\Temp\sw_ultra.exe
            5⤵
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            PID:1600
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1136
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003F0" "0000000000000060"
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\f79a6ad.rbs

    Filesize

    9KB

    MD5

    d22ff6970e5c3f9770d9251db9b03f7f

    SHA1

    313e662d35c56cde30754c40d3426324df28dcf0

    SHA256

    095aef1aaaa64759f01d271a9812d8279e14ebabef3812bca44106dd477f1bce

    SHA512

    7d8dd0c79491f257e8ebdb991df1ca44ea9efa467d6c5b90cf63cc2c8b6e14cf0736a069583af420d4bee82885877ae2656e8edc8043f8c78de7d912fb8a0c97

  • C:\ProgramData\pixlrfla\logs.dat

    Filesize

    250B

    MD5

    8ec1534bf95452b33556d4e63f6d6209

    SHA1

    4622ce9df488c3879da56a422edc705b9cbb00b4

    SHA256

    6a5284da9e20156ca4a21938367e67928426e0409fa9d1163d79933ddf3995eb

    SHA512

    e6ccf8143a1cb0f173493e9c26fc2e2d25e650140b66b4107eb9248b34d5457a0d93eb81cb152ed789ae5896d09c62e328991c20aa74454a8c0f4c4a8cf85c61

  • C:\ProgramData\pixlrfla\logs.dat

    Filesize

    274B

    MD5

    79a9f3e6ca7bec7b67f9957d2451c323

    SHA1

    bacddfd38da3f29bb368d34bfcae645580b231b2

    SHA256

    16571ff4e4061e3bd867a8de798f976bdd10a19ab5e20d4da80b52a872cba2cb

    SHA512

    f572c5f131ff4fdcea29324b08c53c7e8ea62b47a12f430d4dfe2b0d291514b3712ef4a5030e98567d330986323ca4bb997bc189278c1d8c94501e89daedb7fe

  • C:\Users\Admin\AppData\Local\Sleigh\Qt5Core.dll

    Filesize

    6.0MB

    MD5

    68e600cb754e04557ef716b9ebc93fe4

    SHA1

    8302ab611e787c312b971ce05935ff6e956faede

    SHA256

    8f4c72e3c7de1ab5d894ec7813f65c5298ecafc183f31924b44a427433ffca42

    SHA512

    8bbd7d14b59f01eba7c46a6e8592c037cab73bed1eb0762fc278cf7b81082784e88d777a32f71bc2de128c0186321004bfa4ca68d1bcaa5660694c007219e98e

  • C:\Users\Admin\AppData\Local\Sleigh\Qt5Network.dll

    Filesize

    1.3MB

    MD5

    c24c89879410889df656e3a961c59bcc

    SHA1

    25a9e4e545e86b0a5fe14ee0147746667892fabd

    SHA256

    739bedcfc8eb860927eb2057474be5b39518aaaa6703f9f85307a432fa1f236e

    SHA512

    0542c431049e4fd40619579062d206396bef2f6dadadbf9294619c918b9e6c96634dcd404b78c6045974295126ec35dd842c6ec8f42279d9598b57a751cd0034

  • C:\Users\Admin\AppData\Local\Sleigh\VCRUNTIME140_1.dll

    Filesize

    48KB

    MD5

    cf0a1c4776ffe23ada5e570fc36e39fe

    SHA1

    2050fadecc11550ad9bde0b542bcf87e19d37f1a

    SHA256

    6fd366a691ed68430bcd0a3de3d8d19a0cb2102952bfc140bbef4354ed082c47

    SHA512

    d95cd98d22ca048d0fc5bca551c9db13d6fa705f6af120bbbb621cf2b30284bfdc7320d0a819bb26dab1e0a46253cc311a370bed4ef72ecb60c69791ed720168

  • C:\Users\Admin\AppData\Local\Sleigh\hneggqx

    Filesize

    1.1MB

    MD5

    8770e325895738a7f1e79ac5d0258d15

    SHA1

    bfe730d1e4bf4c2a179e056f332ea240ed526742

    SHA256

    31c51d0135f088d36da43cd029914e61ddd96f4198259812990fa1dd7e49dc4a

    SHA512

    4d2a0312bd3fbe5e49abdd1188b36f1426682354ca8a8be22f610e13e4ce465cbe0e6493ccad463162cf8089543a75bfbf563dcb423e6ebe78b55cd802944f5c

  • C:\Users\Admin\AppData\Local\Sleigh\libssl-1_1-x64.dll

    Filesize

    669KB

    MD5

    4ad03043a32e9a1ef64115fc1ace5787

    SHA1

    352e0e3a628c8626cff7eed348221e889f6a25c4

    SHA256

    a0e43cbc4a2d8d39f225abd91980001b7b2b5001e8b2b8292537ae39b17b85d1

    SHA512

    edfae3660a5f19a9deda0375efba7261d211a74f1d8b6bf1a8440fed4619c4b747aca8301d221fd91230e7af1dab73123707cc6eda90e53eb8b6b80872689ba6

  • C:\Users\Admin\AppData\Local\Sleigh\ylkln

    Filesize

    52KB

    MD5

    958c1c9f428c7b93a9cd15b6f05454cd

    SHA1

    4044b10ca7c7fbeac46f0a23dfbca5f7760116a4

    SHA256

    7c5d6dd61c89f4880a98ef9bc122829958c7ed7b2ab4d8fdf6ca1de345be04b0

    SHA512

    abade75f117395191ae35393d41ff0e9b17c4277a25f21ca047f08a57a99a133cbdd56eea267d82fb6917844a7c056cf04ba27662c6ac81b2ddb6200f8010cc8

  • C:\Users\Admin\AppData\Local\Temp\3b055307

    Filesize

    1.6MB

    MD5

    e6a8b0d5e92337bccdb2f576d9de6c1a

    SHA1

    cad45f403a2cd5764591517cd704d59d7db19d60

    SHA256

    7cf61674a9b851620f3094d7f047862b20333560575d8e23d3d0da720abd1f55

    SHA512

    a30fec84152286ec2f28559bcc9a6742b19bc9dd7d4da8284e1b1bd9ce90ea0bf18cec1a26e05c935ceb2debebabb4d18344213cd708100addeebbd27e2da68c

  • C:\Users\Admin\Desktop\formulario_agendamiento_citas.msi

    Filesize

    7.1MB

    MD5

    0579a377e4d014fb6e208b94dd2064a6

    SHA1

    edcf26e71cc6ba2593699c080f69f75a3c30f315

    SHA256

    0c302dc8e0d0684e8494300870a27bfc5c9121ab209ff2d3e4fe17306a3b5222

    SHA512

    15434bcc1eef8497295a4ac7ded8e2b3dc03db632eff9f241eef7995bf6c686a84e0aacffde44da44783079c51aff5b479fdf5566642770f3338cd8f87adb6cb

  • C:\Windows\System32\DriverStore\FileRepository\volsnap.inf_amd64_neutral_7499a4fac85b39fc\volsnap.PNF

    Filesize

    5KB

    MD5

    5e961b1e105c3b3e61e882a553bf5355

    SHA1

    a5410576b80da1982c64fd9bb81b85f6bc7cd12d

    SHA256

    1b68210cf77bbf95273c182120e0e38bc6750b361a5c2725319afb753dcfc0d1

    SHA512

    943d43bb77968c9d1df98076ec4a344c01596b2ae7771ce37dd10389ff96eadca91412106f404da5b54fb345d6e0e845259c8cec4537ff4d23c46a5a4e8d756a

  • \Users\Admin\AppData\Local\Sleigh\EASteamProxy.exe

    Filesize

    5.4MB

    MD5

    ad2735f096925010a53450cb4178c89e

    SHA1

    c6d65163c6315a642664f4eaec0fae9528549bfe

    SHA256

    4e775b5fafb4e6d89a4694f8694d2b8b540534bd4a52ff42f70095f1c929160e

    SHA512

    1868b22a7c5cba89545b06f010c09c5418b3d86039099d681eee9567c47208fdba3b89c6251cf03c964c58c805280d45ba9c3533125f6bd3e0bc067477e03ab9

  • \Users\Admin\AppData\Local\Sleigh\libcrypto-1_1-x64.dll

    Filesize

    2.7MB

    MD5

    78c6831007ac63cdec78eb7b032c461f

    SHA1

    1012ff593fb7df5d2d911cd6e80621215d223476

    SHA256

    a00ea7fa0cdfd017c9a4d947501583e37b08784111deaf6d6fbd1b3eb51241c4

    SHA512

    bc5c6f135cce8eda81d5589e67e9d7b7ff6d3a6413afe1914ad96fced26f659271f1d83e42e8d763315e91168cf2486fa8bc575de1555cf134ff97cd77576016

  • \Users\Admin\AppData\Local\Sleigh\msvcp140.dll

    Filesize

    564KB

    MD5

    1ba6d1cf0508775096f9e121a24e5863

    SHA1

    df552810d779476610da3c8b956cc921ed6c91ae

    SHA256

    74892d9b4028c05debaf0b9b5d9dc6d22f7956fa7d7eee00c681318c26792823

    SHA512

    9887d9f5838aa1555ea87968e014edfe2f7747f138f1b551d1f609bc1d5d8214a5fdab0d76fcac98864c1da5eb81405ca373b2a30cb12203c011d89ea6d069af

  • \Users\Admin\AppData\Local\Sleigh\msvcp140_1.dll

    Filesize

    34KB

    MD5

    69d96e09a54fbc5cf92a0e084ab33856

    SHA1

    b4629d51b5c4d8d78ccb3370b40a850f735b8949

    SHA256

    a3a1199de32bbbc8318ec33e2e1ce556247d012851e4b367fe853a51e74ce4ee

    SHA512

    2087827137c473cdbec87789361ed34fad88c9fe80ef86b54e72aea891d91af50b17b7a603f9ae2060b3089ce9966fad6d7fbe22dee980c07ed491a75503f2cf

  • \Users\Admin\AppData\Local\Sleigh\steam_api64.dll

    Filesize

    291KB

    MD5

    6b4ab6e60364c55f18a56a39021b74a6

    SHA1

    39cac2889d8ca497ee0d8434fc9f6966f18fa336

    SHA256

    1db3fd414039d3e5815a5721925dd2e0a3a9f2549603c6cab7c49b84966a1af3

    SHA512

    c08de8c6e331d13dfe868ab340e41552fc49123a9f782a5a63b95795d5d979e68b5a6ab171153978679c0791dc3e3809c883471a05864041ce60b240ccdd4c21

  • \Users\Admin\AppData\Local\Sleigh\vcruntime140.dll

    Filesize

    106KB

    MD5

    49c96cecda5c6c660a107d378fdfc3d4

    SHA1

    00149b7a66723e3f0310f139489fe172f818ca8e

    SHA256

    69320f278d90efaaeb67e2a1b55e5b0543883125834c812c8d9c39676e0494fc

    SHA512

    e09e072f3095379b0c921d41d6e64f4f1cd78400594a2317cfb5e5dca03dedb5a8239ed89905c9e967d1acb376b0585a35addf6648422c7ddb472ce38b1ba60d

  • \Users\Admin\AppData\Local\Temp\sw_ultra.exe

    Filesize

    433KB

    MD5

    fea067901f48a5f1faf7ca3b373f1a8f

    SHA1

    e8abe0deb87de9fe3bb3a611234584e9a9b17cce

    SHA256

    bf24b2f3e3a3c60ed116791b99e5421a4de34ac9c6e2201d34ab487e448ce152

    SHA512

    07c83a2d3d5dd475bc8aa48eba9b03e8fb742dbbd7bd623ed05dc1086efed7dfd1c1b8f037ee2e81efba1de58ea3243d7c84ac8b484e808cd28765f9c7517023

  • memory/952-69-0x000007FEF5090000-0x000007FEF51E8000-memory.dmp

    Filesize

    1.3MB

  • memory/1600-136-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1600-149-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-160-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-137-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1600-157-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-139-0x0000000076E20000-0x0000000076FC9000-memory.dmp

    Filesize

    1.7MB

  • memory/1600-140-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-143-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-146-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1600-152-0x0000000000400000-0x0000000000480000-memory.dmp

    Filesize

    512KB

  • memory/1636-114-0x000007FEF4FF0000-0x000007FEF5148000-memory.dmp

    Filesize

    1.3MB

  • memory/1636-106-0x000007FEF4FF0000-0x000007FEF5148000-memory.dmp

    Filesize

    1.3MB

  • memory/2456-120-0x00000000745E0000-0x0000000074754000-memory.dmp

    Filesize

    1.5MB

  • memory/2456-119-0x0000000076E20000-0x0000000076FC9000-memory.dmp

    Filesize

    1.7MB

  • memory/2456-128-0x00000000745E0000-0x0000000074754000-memory.dmp

    Filesize

    1.5MB