Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 13:25

General

  • Target

    SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe

  • Size

    892KB

  • MD5

    636a54861ddd167065f294cc76fca7ba

  • SHA1

    7e3eba28bc4b89801c91de5450aa28da5c6ff941

  • SHA256

    8f02ecb26530c0a13b7f00020ebca144fc271fe36a5caaba1f4b3270e8e0023c

  • SHA512

    cde7be19fc7fa841d22521a6c5ad01129ff604b2f91c1c16e0da7d91434cd962af25a39c8ab43c14915536b47d652eb2e55cf0fab5178a9553ab0f8f74833fc4

  • SSDEEP

    24576:GgkHhAVqHxUrlWy05hMud6hHERSIhO0RDP+dB8:I2V+Ur6MIMHERSIQ0RDr

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

paygateme.net:2286

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

    Rmc-WTDTSU

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 7 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
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • 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" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tzRVJJzEigd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2996
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tzRVJJzEigd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6A9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2552
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe /stext "C:\Users\Admin\AppData\Local\Temp\uyybgcbomgtvhxjyadtkruemxjlerwrbe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2012
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe /stext "C:\Users\Admin\AppData\Local\Temp\fsdty"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:1996
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.22684.1131.exe /stext "C:\Users\Admin\AppData\Local\Temp\purmznwjw"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat
    Filesize

    144B

    MD5

    971082c9f72b9f64d5a5610dce080a75

    SHA1

    c92c7a8eac5221c34e46c13135d7265bfef1a775

    SHA256

    8acb7b1e2f19eac887b37dadb26835eec7a589be73e615caca5ca8824882a821

    SHA512

    d4ab299f8d1bac30901331c9421eecb376e7b61e1c3239aa86eb1360969c6ffebc3aa564a46ecd844eebb780a945081f247dfb8219e444509c990bd776d4da95

  • C:\Users\Admin\AppData\Local\Temp\tmpC6A9.tmp
    Filesize

    1KB

    MD5

    7498a0775fe037f2488b754ef7467d93

    SHA1

    cc56e915151bdc83f28dfa92d49b0b700043a3ce

    SHA256

    b3eff484eaf8ee449dc060e132cbf212c9f89b2a3de23c62705cbf2af1a902fd

    SHA512

    eab40bcb2fcbe13530af3e24da0a46ffe575d1e919e1aeef87e3f98b8d3f6bd9e8cbba8203c5d0c8c02c08fbc4c00903bd7733fb9bb3a34d83f68e198936245d

  • C:\Users\Admin\AppData\Local\Temp\uyybgcbomgtvhxjyadtkruemxjlerwrbe
    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • memory/1772-0-0x0000000001100000-0x00000000011E6000-memory.dmp
    Filesize

    920KB

  • memory/1772-1-0x0000000073F20000-0x000000007460E000-memory.dmp
    Filesize

    6.9MB

  • memory/1772-2-0x0000000000F60000-0x0000000000FA0000-memory.dmp
    Filesize

    256KB

  • memory/1772-3-0x0000000000220000-0x0000000000230000-memory.dmp
    Filesize

    64KB

  • memory/1772-4-0x00000000003F0000-0x00000000003FC000-memory.dmp
    Filesize

    48KB

  • memory/1772-5-0x00000000054E0000-0x00000000055A0000-memory.dmp
    Filesize

    768KB

  • memory/1772-33-0x0000000073F20000-0x000000007460E000-memory.dmp
    Filesize

    6.9MB

  • memory/1936-78-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1936-75-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1936-79-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1936-71-0x0000000000400000-0x0000000000424000-memory.dmp
    Filesize

    144KB

  • memory/1996-88-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/1996-76-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/1996-72-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/1996-69-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/1996-66-0x0000000000400000-0x0000000000462000-memory.dmp
    Filesize

    392KB

  • memory/2012-84-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2012-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2012-64-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2012-62-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2012-59-0x0000000000400000-0x0000000000478000-memory.dmp
    Filesize

    480KB

  • memory/2628-30-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-95-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-123-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-122-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-43-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-115-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-49-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-50-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-51-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-52-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-54-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-114-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-106-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-38-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-37-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-36-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-34-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-32-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2628-26-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-24-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-73-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-22-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-20-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-18-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-17-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-15-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-87-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2628-92-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2628-93-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2628-94-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2628-105-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-96-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-97-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-13-0x0000000000400000-0x0000000000482000-memory.dmp
    Filesize

    520KB

  • memory/2628-102-0x0000000010000000-0x0000000010019000-memory.dmp
    Filesize

    100KB

  • memory/2996-44-0x0000000000590000-0x00000000005D0000-memory.dmp
    Filesize

    256KB

  • memory/2996-40-0x000000006E2D0000-0x000000006E87B000-memory.dmp
    Filesize

    5.7MB

  • memory/2996-41-0x000000006E2D0000-0x000000006E87B000-memory.dmp
    Filesize

    5.7MB

  • memory/2996-47-0x000000006E2D0000-0x000000006E87B000-memory.dmp
    Filesize

    5.7MB

  • memory/2996-46-0x0000000000590000-0x00000000005D0000-memory.dmp
    Filesize

    256KB

  • memory/2996-45-0x0000000000590000-0x00000000005D0000-memory.dmp
    Filesize

    256KB