Resubmissions

30-09-2022 13:05

220930-qbjhcadfa2 10

30-09-2022 13:02

220930-p9w1nadeh9 10

Analysis

  • max time kernel
    210s
  • max time network
    196s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-09-2022 13:05

General

  • Target

    IMG-SCAN28202209.exe

  • Size

    23KB

  • MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

  • SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

  • SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

  • SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • SSDEEP

    384:73XELB28wj8veCinbQ4vlid7TEPVoyQLkopnW:kGjBDdvlid74PpQL9pW

Malware Config

Extracted

Family

remcos

Botnet

NEW

C2

remcapi.duckdns.org:2028

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    FILE.EXE

  • copy_folder

    work

  • delete_file

    true

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-L9LQMY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    file

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 5 IoCs
  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 8 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\IMG-SCAN28202209.exe
    "C:\Users\Admin\AppData\Local\Temp\IMG-SCAN28202209.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:288
    • C:\Users\Admin\AppData\Local\Temp\IMG-SCAN28202209.exe
      C:\Users\Admin\AppData\Local\Temp\IMG-SCAN28202209.exe
      2⤵
      • Adds policy Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:2000
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\work\FILE.EXE"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1852
          • C:\ProgramData\work\FILE.EXE
            C:\ProgramData\work\FILE.EXE
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • Modifies system certificate store
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1772
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1420
            • C:\ProgramData\work\FILE.EXE
              C:\ProgramData\work\FILE.EXE
              6⤵
              • Adds policy Run key to start application
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:1636
              • C:\ProgramData\work\FILE.EXE
                C:\ProgramData\work\FILE.EXE /stext "C:\Users\Admin\AppData\Local\Temp\cwtzaojjrpjhvyzrlvxybp"
                7⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:1372
              • C:\ProgramData\work\FILE.EXE
                C:\ProgramData\work\FILE.EXE /stext "C:\Users\Admin\AppData\Local\Temp\eqzsahtcfxbmfendvgjrmcrcas"
                7⤵
                • Executes dropped EXE
                PID:1468
              • C:\ProgramData\work\FILE.EXE
                C:\ProgramData\work\FILE.EXE /stext "C:\Users\Admin\AppData\Local\Temp\eqzsahtcfxbmfendvgjrmcrcas"
                7⤵
                • Executes dropped EXE
                • Accesses Microsoft Outlook accounts
                PID:1476
              • C:\ProgramData\work\FILE.EXE
                C:\ProgramData\work\FILE.EXE /stext "C:\Users\Admin\AppData\Local\Temp\osecbzeetftqhkjhmretphdtjykoo"
                7⤵
                • Executes dropped EXE
                PID:1956
              • C:\ProgramData\work\FILE.EXE
                C:\ProgramData\work\FILE.EXE /stext "C:\Users\Admin\AppData\Local\Temp\osecbzeetftqhkjhmretphdtjykoo"
                7⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:1400
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1256
  • C:\ProgramData\work\FILE.EXE
    "C:\ProgramData\work\FILE.EXE"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1420
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1472

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    522B

    MD5

    bea79706ca85b348ac847100f6d55906

    SHA1

    6f49d9f95306def7f974cc92a78ee01226565c82

    SHA256

    dcc0f0a231657ac2e354b10791e7b7e848b82fce86170345628348d73642b4ea

    SHA512

    997bcb3a81f7029fb651f2ac50db7a849e47674a6a05c8ca72acbf6859cb7dd68f0cfe74d7f7691de2856f1f991e7d68dbd8c7cc2090d44521f56d8c6cfca0ee

  • C:\Users\Admin\AppData\Roaming\APP.exe

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    fdbd2ee3cbf5eb8137b6b639d1d8a5aa

    SHA1

    d644351ccc2af59c3526cf5679e5ef15299b0f64

    SHA256

    653680623036688ad401cc95dc406db16243a2082b3e5255cfc8821e766e6c2f

    SHA512

    505f3e9150290551e216b2d990c8d785319212a9111b429dee0a3eea5b900ed60ece87786499ef42ce4bfd2433ff3d3b7b7099ef90c92dbc7d87da9e364b3093

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    8a34a1ccb25f98a3db7eeda5693bea6d

    SHA1

    c28ed02297c0fa6bdfb76e8ee235a84881a3ec31

    SHA256

    b63f02c4249ab3514fcdb6799e6fc99be930470890f9a2137ec7995533ea4424

    SHA512

    b8af55e3686c65993d7a611f0d9713c8766722a6de082b85c3dd8bd3af4eb7d78f119b92fb5ff9175febf7253149c8d8f99716828045e89347b075ebca7136b6

  • \ProgramData\work\FILE.EXE

    Filesize

    23KB

    MD5

    4ab9b88c610ff3fbe511aaf8f1c1294c

    SHA1

    b7c9e2df72ef925ff48cd6d4b125bc72e2dd12e5

    SHA256

    fcba45047433ffcc247b656b941e4fb517fb0a6582a01543a6e25bf774dfd11a

    SHA512

    e3aab0975fc27efb3783c70e7bdf347edd07edd531f3da8741ef3f61450305b7e6b983b4aac7fec49f5f459e6f69766e4bebc4e3840dc87d76258c00eac9e106

  • memory/288-61-0x000000006EF70000-0x000000006F51B000-memory.dmp

    Filesize

    5.7MB

  • memory/288-62-0x000000006EF70000-0x000000006F51B000-memory.dmp

    Filesize

    5.7MB

  • memory/288-60-0x000000006EF70000-0x000000006F51B000-memory.dmp

    Filesize

    5.7MB

  • memory/288-58-0x0000000000000000-mapping.dmp

  • memory/1012-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-81-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-79-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-66-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-64-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-63-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-76-0x00000000004327A4-mapping.dmp

  • memory/1012-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-73-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-71-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1012-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1044-54-0x0000000000200000-0x000000000020C000-memory.dmp

    Filesize

    48KB

  • memory/1044-57-0x0000000005440000-0x00000000054D2000-memory.dmp

    Filesize

    584KB

  • memory/1044-56-0x0000000005B90000-0x0000000005C70000-memory.dmp

    Filesize

    896KB

  • memory/1044-55-0x0000000075071000-0x0000000075073000-memory.dmp

    Filesize

    8KB

  • memory/1256-131-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1256-132-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1256-136-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

    Filesize

    64KB

  • memory/1256-138-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

  • memory/1256-117-0x000007FEFB821000-0x000007FEFB823000-memory.dmp

    Filesize

    8KB

  • memory/1372-130-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1372-118-0x0000000000476274-mapping.dmp

  • memory/1400-129-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1400-126-0x0000000000422206-mapping.dmp

  • memory/1420-94-0x000000006F040000-0x000000006F5EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1420-91-0x0000000000000000-mapping.dmp

  • memory/1420-140-0x0000000001240000-0x000000000124C000-memory.dmp

    Filesize

    48KB

  • memory/1420-95-0x000000006F040000-0x000000006F5EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1420-96-0x000000006F040000-0x000000006F5EB000-memory.dmp

    Filesize

    5.7MB

  • memory/1472-142-0x0000000000000000-mapping.dmp

  • memory/1472-148-0x000000006EDC0000-0x000000006F36B000-memory.dmp

    Filesize

    5.7MB

  • memory/1472-147-0x000000006EDC0000-0x000000006F36B000-memory.dmp

    Filesize

    5.7MB

  • memory/1472-146-0x000000006EDC0000-0x000000006F36B000-memory.dmp

    Filesize

    5.7MB

  • memory/1476-135-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1476-121-0x0000000000455238-mapping.dmp

  • memory/1476-133-0x0000000000400000-0x0000000000457000-memory.dmp

    Filesize

    348KB

  • memory/1636-137-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1636-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1636-111-0x00000000004327A4-mapping.dmp

  • memory/1636-116-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1772-89-0x0000000001240000-0x000000000124C000-memory.dmp

    Filesize

    48KB

  • memory/1772-87-0x0000000000000000-mapping.dmp

  • memory/1852-84-0x0000000000000000-mapping.dmp

  • memory/2000-80-0x0000000000000000-mapping.dmp