Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    01-10-2024 01:53

General

  • Target

    f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe

  • Size

    908KB

  • MD5

    7b9844639ef183122af8383ce901b8e0

  • SHA1

    87514d622f74e94720cd77243326dd8c8217dfae

  • SHA256

    f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b

  • SHA512

    c98ad33821fbe4f71480a3ea36133d47dafbbb41dda3c3dc31ff4d6755491ea42a5418179e3f7f9d27fddb55a9b933ae221650b850a53096c6a216d39e151bf0

  • SSDEEP

    24576:XO++gHdGXYcihGy+XKjHjjxHqHlngC9fnfyQ5G/:XO++gHdGXYcT7XkjFHqHlgY6/

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.101.137:5980

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-DO8TMQ

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe
    "C:\Users\Admin\AppData\Local\Temp\f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JhWUOJ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2604
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JhWUOJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B77.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3020
    • C:\Users\Admin\AppData\Local\Temp\f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe
      "C:\Users\Admin\AppData\Local\Temp\f62f5c6710e7609e4ba0172304f9887df37064c6f1aec70efac871eb3683085b.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    48ba7646174d16e2ebd6baa4a3df1773

    SHA1

    0a561c1f52f69aadaea6f96e8a257ed7bb5a7f29

    SHA256

    390a9c3ce108afa0cc3cd67147be88203f92651b658a022367c1062b97c84ba4

    SHA512

    f50c1fe81c78f5ddf0783c0059163cc76980822d8ddb0ebc1b06e520c7de466e3f0f886765e000b51855a777d825dd62d2f333434bb02b4af066425663dc0bf9

  • C:\Users\Admin\AppData\Local\Temp\tmp7B77.tmp

    Filesize

    1KB

    MD5

    dc86c70274c6cb726d10d0efb8dde6f1

    SHA1

    a79d3403160153e6a84d1fdef9a21a0b4cac2a5b

    SHA256

    9ca32b9c364b77acb818cf1848b4ba2d8b1685fce31505e44a283c3b7888e009

    SHA512

    94377f88283fcb10a0ea17299ac0b143655b9fa6a742f95ddf22cfd103433be56ca439bb2201984733e055adb6f9e3dc3983f1495c83821dd428bf936445a016

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

    Filesize

    7KB

    MD5

    9e130666f1857daa87618dde0d8485e6

    SHA1

    7b9cf2e4792ffa8d55a1a232739c01cd9b2c3ba5

    SHA256

    50b89a96c5f54ece0a3190e27cd4a2ce61314bdec3b25bc19ad2299c4a08c298

    SHA512

    d6b50fceb57b8c672fdbce1a58a719cf1a5ff8a91fefd919afa4dc97355e396da3f8c51ad46a72a55497f69078bb87073e7a0c218bfd20d06c4c237307838cb3

  • memory/2576-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2576-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2576-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2668-43-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-1-0x0000000000B80000-0x0000000000C6A000-memory.dmp

    Filesize

    936KB

  • memory/2668-4-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/2668-5-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-0-0x00000000745DE000-0x00000000745DF000-memory.dmp

    Filesize

    4KB

  • memory/2668-2-0x00000000745D0000-0x0000000074CBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2668-3-0x00000000006A0000-0x00000000006B0000-memory.dmp

    Filesize

    64KB

  • memory/2668-6-0x0000000005850000-0x0000000005910000-memory.dmp

    Filesize

    768KB