Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-09-2024 12:17

General

  • Target

    0984e42839cc75fe48ca906427500500697573111e8d773273e9834f1d545b12.msi

  • Size

    4.0MB

  • MD5

    cd09dc91948dee9022ab3d5f4be68ff5

  • SHA1

    3efbfcda662ae28e2d2efb78447625b40321e889

  • SHA256

    0984e42839cc75fe48ca906427500500697573111e8d773273e9834f1d545b12

  • SHA512

    23997e1983d3c82664344ff25102b5adedf290b2246a2e0f98bbd8db22eb684aca50df4c76b382815f2a7cd9bb896b75ea5a441225ef36a00df5b7b955466806

  • SSDEEP

    49152:kpRh65S/++y9Scu52FCLd5IW5FSL6QPh7AOxr6cWmxq0DgPIFIMO/aOL/hgXMYJP:kpCV96gCTMXxrLlxq0cPVZi2kMYJo2

Malware Config

Extracted

Family

remcos

Botnet

BACKUP_PIP

C2

heavytank21gh.com:4422

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

    info.dat

  • keylog_flag

    false

  • keylog_folder

    tmpdata

  • mouse_option

    false

  • mutex

    aujifbh8123-1M56R1

  • 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.

  • Modifies file permissions 1 TTPs 2 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 1 IoCs
  • Drops file in Windows directory 11 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 19 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 11 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.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 38 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\0984e42839cc75fe48ca906427500500697573111e8d773273e9834f1d545b12.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3920
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5044
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5980
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding BB2863B285CDF500045265D0438EFD9B
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3632
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:768
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files\AsmBasic.cmd" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5960
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c xcopy /s "C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files" /d C:\Users\Admin\AppData\Roaming\microsoft
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4200
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy /s "C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files" /d C:\Users\Admin\AppData\Roaming\microsoft
            5⤵
            • System Location Discovery: System Language Discovery
            • Enumerates system info in registry
            PID:4508
        • C:\Users\Admin\AppData\Roaming\Microsoft\DPMHelper.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\DPMHelper.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4652
          • C:\Users\Admin\AppData\Local\streamService_beta\DPMHelper.exe
            C:\Users\Admin\AppData\Local\streamService_beta\DPMHelper.exe
            5⤵
            • 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:2356
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\SysWOW64\cmd.exe
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:652
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4144
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1160
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:3260
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=1288 /prefetch:8
    1⤵
      PID:6040

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\tmpdata\info.dat

      Filesize

      144B

      MD5

      773094bdc85e7eb36663820f9573a21f

      SHA1

      344fcb024e26ac2cca109a4ecc76325f1b85b17d

      SHA256

      5c61de9840ce7142933a01616e8467d1e0ab7ccc1ce92aee020df7bb9c569602

      SHA512

      ac37889b3b6e6270aee008356243e5e627f921582eec4a32707cf4c703c2a235cfe07ac287da935764c37bf624a44317f17c2410d7f0b61eec7d49d53b0837f9

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files.cab

      Filesize

      3.7MB

      MD5

      8dbedeff4ffdd64aefed6aa0df5a0160

      SHA1

      c17ac807b0199c807a50bb81176ef11e5a3c90b1

      SHA256

      c5d62ccb11c31414e1eceb2d5b8e2a7b2bd47eee8b4e2da3c58c2deaa90ae3d5

      SHA512

      ba45ab9a4ba6bcf4f2a5cf343e4206a53dbceb6bf3aa0dab2abdc205b4fb31a5613a403035c26727fa5be4b107fd4460472c11764045e7c147896ed988044816

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files\AsmBasic.cmd

      Filesize

      92B

      MD5

      1913912c73e6a4617365fe6c34b6b45b

      SHA1

      8e5d80bf5b935bf084b2b7a287afcf722e105e11

      SHA256

      f6667770a1df12ae0780ff6b55188dbd95d465d093867824343e858dd66168ae

      SHA512

      daf4a913d237b82872bbd55e96db8dafac60a4a85c5eb225100b321d6c11810e1c22e03ed4b30e0e0fe257191c97e3d74b764a7780f3e3061f167e2010a538aa

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files\cmdfmt.exe

      Filesize

      2.0MB

      MD5

      3c06138c0e9b9706281dea5b5037bfbb

      SHA1

      608a2ee6adf4c3ccfb3ea25edf393f5745cb7b57

      SHA256

      82f93f71f45c1d2ea20697d01d3f5ae50761942a956384e217ba898efa63ec47

      SHA512

      bf1f360f99f0f38ef66d97d42ba689936b22c38e092533e14723974ab2f2b9ffac61446400f3379f97c7edd982c6cec62400670682855ef5482d3bcf6c567131

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files\maddisAsm_.bpl

      Filesize

      63KB

      MD5

      d80c131cfac41ebffcb37141a81bb8a5

      SHA1

      b7e9e91a1bf6ea800803d4c867978e2f053a53ee

      SHA256

      d417b480d60126d193007db9a017755014d41643d0c00d121674a993ece8cc39

      SHA512

      9946e71e465ac5c750447fb90be695463547ea2e44bdb060433bc5ef74f306883282adb9141139fbfb4b8079f959f650622cecd890fc9403455c8a6547228895

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\files\madexcept_.bpl

      Filesize

      436KB

      MD5

      98e59596edd9b888d906c5409e515803

      SHA1

      b79d73967a2df21d00740bc77ccebda061b44ab6

      SHA256

      a6ca13af74a64e4ab5ebb2d12b757cecf1a683cb9cd0ae7906db1b4b2c8a90c0

      SHA512

      ba617227849d2eb3285395e2d1babfe01902be143144be895011f0389f1860d0d7f08c6bbc4d461384eba270f866cce3351f52af1dc9ef9719c677619de79e42

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\msiwrapper.ini

      Filesize

      1KB

      MD5

      f9ca0e83f6585c3b514ed506352de08b

      SHA1

      46aff85a031cb02725e6a6feb3b1ecd467d8e24e

      SHA256

      284fd904e2cef649f6d224f2dc1bfd7c86d622133ec0551cb54fcd20c00af737

      SHA512

      e01abf2144bb148b7e862fd3e95b0160263a4078f8cb1c6d95b6b45019c5313b8e4d00583977ed8c77ee95b94afb5aa911e0f2ef47f2ea71968c4ec026fc9685

    • C:\Users\Admin\AppData\Local\Temp\MW-1a384160-7c7b-4220-aaa5-ba820eaa14db\msiwrapper.ini

      Filesize

      1KB

      MD5

      bb28b4d06281e32a4f787c71c1b06a7d

      SHA1

      fd2ba6b0a441fcaf780a10457c3adc5fa644d409

      SHA256

      62ac02b6f38f47846bc9572bdad3ef70ff30a1c13181b27bcdf7019a4f74e63d

      SHA512

      4490fa6f75525edd913347c85d4bad977e22b2ad420e473e302e230a6216e84dc2fdc0c76e50f6c1138cbd3368cab843cce35dbabce4aa15e989f249955c752b

    • C:\Users\Admin\AppData\Local\Temp\f9291fe4

      Filesize

      1.2MB

      MD5

      2f58b0c0b4988eeb752e0bfcb2b76a48

      SHA1

      a84da54d453c548d9e4eb1150b3f45b0e0777147

      SHA256

      ea284fec6f5060141f82d5ccdd88c7b2bafcdeb03304d3ce3c9fcbb0e8a59dce

      SHA512

      1ad072c2757b045c533c8abeb39101c9963d772afad277b399645af74960342550772f8a86251cb9305b55291e1a023b05b07421cdac99fea941dda7f32dc6f6

    • C:\Users\Admin\AppData\Roaming\Microsoft\DPMHelper.exe

      Filesize

      2.3MB

      MD5

      5d52ef45b6e5bf144307a84c2af1581b

      SHA1

      414a899ec327d4a9daa53983544245b209f25142

      SHA256

      26a24d3b0206c6808615c7049859c2fe62c4dcd87e7858be40ae8112b0482616

      SHA512

      458f47c1e4ccf41edaacc57abb663ee77ca098fffc596fad941bbdea67653aeabc79b34d607078b9ee5adb45614e26f5c28a09e8faf9532081fdd5dec9ac3c48

    • C:\Users\Admin\AppData\Roaming\Microsoft\madbasic_.bpl

      Filesize

      210KB

      MD5

      e03a0056e75d3a5707ba199bc2ea701f

      SHA1

      bf40ab316e65eb17a58e70a3f0ca8426f44f5bef

      SHA256

      7826395127e791a883359ea81308174700da0af8052cc9853b19fd29c2e4badb

      SHA512

      b0a3cfb6b34832f048fe0fc70c6fa76ae16a2cacda930f6529a83a967d6e8de1c69b93e0de3dc2126c5385d85e814687e695a0a4131399a69633141cad98da2a

    • C:\Users\Admin\AppData\Roaming\Microsoft\nanometre.bmp

      Filesize

      944KB

      MD5

      5f111e4eb86d25ba882bba36ac24bfab

      SHA1

      6fd27994a0e0d1f689699ee4c47044084cc2ba64

      SHA256

      1d85daa12a96bf69947394e184ae2619355819d2a53bdf480cb1d0549d9c58b9

      SHA512

      ab1b15e963f6d7bfa9768292727f90750d0e9b06ae8f5faa09b272f8990262ce5bc916322a84b367a53648c2c21f53d9fbbfa9c503327812707fcd78da8f7e8e

    • C:\Users\Admin\AppData\Roaming\Microsoft\rtl120.bpl

      Filesize

      1.1MB

      MD5

      1681f93e11a7ed23612a55bcef7f1023

      SHA1

      9b378bbdb287ebd7596944bce36b6156caa9ff7d

      SHA256

      7ed5369fcf0283ea18974c43dbff80e6006b155b76da7c72fa9619eb03f54cef

      SHA512

      726e8f58648a6abaf1f2d5bebcf28c1d8320551a3b6e7eef0cf8d99f9ef941e30e7004c24c98e9b5e931a86128d26de7decba202390665a005e972dcbe87ab93

    • C:\Users\Admin\AppData\Roaming\Microsoft\vcl120.bpl

      Filesize

      1.9MB

      MD5

      13a2734bb2249010514386ebc856b8da

      SHA1

      8f6e3b30f30a5bba9bc6baaf8f440e085a6a568a

      SHA256

      713c21d009000d504d9bcf3ce95d50e74d3933083783de144db0a16e2425ebcc

      SHA512

      2f108436fc1a03591802ff6b8c6ac1de1c0388b2a2a6f8839c10b5f0ec06b66775f261da4ace05fa367eb46b5be533949c092e113fe1270adedb9cb8c34ba2dd

    • C:\Users\Admin\AppData\Roaming\Microsoft\vclx120.bpl

      Filesize

      222KB

      MD5

      3cb8f7606940c9b51c45ebaeb84af728

      SHA1

      7f33a8b5f8f7210bd93b330c5e27a1e70b22f57b

      SHA256

      2feec33d1e3f3d69c717f4528b8f7f5c030caae6fb37c2100cb0b5341367d053

      SHA512

      7559cdf6c8dbea052242f3b8129979f7d2d283f84040f1d68ae10438548072715a56a5af88b8562aeea7143194e7c5bddac3fdb01ded411a0b1cac9f0c6eef3f

    • C:\Windows\Installer\MSIC1A5.tmp

      Filesize

      208KB

      MD5

      0c8921bbcc37c6efd34faf44cf3b0cb5

      SHA1

      dcfa71246157edcd09eecaf9d4c5e360b24b3e49

      SHA256

      fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

      SHA512

      ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108

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

      Filesize

      23.7MB

      MD5

      2524d77424586b5f376ac86370e66b67

      SHA1

      09903e165067b394e975b0c8456042bdad6b46ee

      SHA256

      341fa93c8f4a41940a9ec5285debb326a368f019d9492e602a0ea051368bb86f

      SHA512

      1e139239c6b866d8136d26b5616a1bb231568484932ecf3a1cc50c792dd74a363d12654e07671dad12efc594ef4265d72e29f7cb5d191fe06fdc4294f0285d9a

    • \??\Volume{ff3ab8f7-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{9dd1421b-b62a-4959-8a74-8f35e43fc773}_OnDiskSnapshotProp

      Filesize

      6KB

      MD5

      eb21d2ff929f6564ccde2b47567f554b

      SHA1

      1119b803a0d72120c7a449ff065ffd00260dfc43

      SHA256

      7345018ba6e79bc472300aa5cc610cbd3f9f5efa6081180878d0f04b658e3768

      SHA512

      85b199d172bd4638fa6ee5c81b525a13237ec80082acd8813a7d4f66b1497a0f5fbbc0bf6b837752ec0761e6f0d6560478ecd4b09d9a8f0d41e97aa3799637bf

    • memory/652-212-0x0000000075190000-0x000000007530B000-memory.dmp

      Filesize

      1.5MB

    • memory/652-210-0x00007FF9EC610000-0x00007FF9EC805000-memory.dmp

      Filesize

      2.0MB

    • memory/2356-205-0x0000000050310000-0x0000000050349000-memory.dmp

      Filesize

      228KB

    • memory/2356-197-0x00007FF9EC610000-0x00007FF9EC805000-memory.dmp

      Filesize

      2.0MB

    • memory/2356-200-0x0000000000400000-0x0000000000698000-memory.dmp

      Filesize

      2.6MB

    • memory/2356-202-0x0000000059800000-0x000000005986E000-memory.dmp

      Filesize

      440KB

    • memory/2356-203-0x0000000050120000-0x000000005030D000-memory.dmp

      Filesize

      1.9MB

    • memory/2356-198-0x0000000075190000-0x000000007530B000-memory.dmp

      Filesize

      1.5MB

    • memory/2356-201-0x0000000050000000-0x0000000050116000-memory.dmp

      Filesize

      1.1MB

    • memory/2356-206-0x0000000057000000-0x000000005703F000-memory.dmp

      Filesize

      252KB

    • memory/2356-196-0x0000000075190000-0x000000007530B000-memory.dmp

      Filesize

      1.5MB

    • memory/4144-223-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-226-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-244-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-241-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-238-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-235-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-232-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-229-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-214-0x00007FF9EC610000-0x00007FF9EC805000-memory.dmp

      Filesize

      2.0MB

    • memory/4144-215-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4144-220-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/4652-172-0x0000000050000000-0x0000000050116000-memory.dmp

      Filesize

      1.1MB

    • memory/4652-178-0x0000000050310000-0x0000000050349000-memory.dmp

      Filesize

      228KB

    • memory/4652-160-0x0000000075980000-0x0000000075AFB000-memory.dmp

      Filesize

      1.5MB

    • memory/4652-161-0x00007FF9EC610000-0x00007FF9EC805000-memory.dmp

      Filesize

      2.0MB

    • memory/4652-177-0x0000000050120000-0x000000005030D000-memory.dmp

      Filesize

      1.9MB

    • memory/4652-173-0x0000000059800000-0x000000005986E000-memory.dmp

      Filesize

      440KB

    • memory/4652-171-0x0000000000400000-0x0000000000698000-memory.dmp

      Filesize

      2.6MB

    • memory/4652-176-0x0000000057800000-0x0000000057812000-memory.dmp

      Filesize

      72KB

    • memory/4652-175-0x0000000057000000-0x000000005703F000-memory.dmp

      Filesize

      252KB