Analysis

  • max time kernel
    149s
  • 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
    22/08/2024, 17:37

General

  • Target
    SecuriteInfo.com.Trojan.Siggen29.26946.16208.25271.exe
  • Size 1.5MB
  • Sample240822-v65raayhpc
  • SHA256 b4ca0b94b1a4e5b2ed28ad66c2df781b5add3c46cf5232b64b3a5253bcc341e8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • remcos

Botnet
  • one

C2
  • 101.99.75.178:2404

  • 101.99.75.178:8080

  • 101.99.75.178:80

  • 101.99.75.178:4899

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

    xkosl-VDHNPT

  • 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3564
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen29.26946.16208.25271.exe
        "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen29.26946.16208.25271.exe"
        2⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4652
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k move Recording Recording.cmd & Recording.cmd & exit
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4816
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:876
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3716
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:3260
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "avastui.exe avgui.exe bdservicehost.exe ekrn.exe nswscsvc.exe sophoshealth.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:5056
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 594083
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1928
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V "bookingsconstraintmoraltranscripts" Seriously
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3812
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c copy /b ..\Lease + ..\Mounted + ..\Equations + ..\Hole + ..\Marriage + ..\Cest + ..\Ext + ..\Savage + ..\Release + ..\Gig + ..\Considerations + ..\Dentists s
            4⤵
            • System Location Discovery: System Language Discovery
            PID:4268
          • C:\Users\Admin\AppData\Local\Temp\594083\Explicit.pif
            Explicit.pif s
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1888
          • C:\Windows\SysWOW64\choice.exe
            choice /d y /t 5
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3248
      • C:\Windows\SysWOW64\cmd.exe
        cmd /k echo [InternetShortcut] > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HannahSense.url" & echo URL="C:\Users\Admin\AppData\Local\GreenTech Innovations\HannahSense.js" >> "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HannahSense.url" & exit
        2⤵
        • Drops startup file
        • System Location Discovery: System Language Discovery
        PID:2388

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          logs.dat

          • Path C:\ProgramData\remcos\logs.dat
          • Size 144B
          • SHA256 67eb172f1a0f0d7f8a2c60dec2c40ca7928aca95d2aee5b60c0e84bc092091a3
          • MD5 SHA1 SHA512

          Explicit.pif

          • Path C:\Users\Admin\AppData\Local\Temp\594083\Explicit.pif
          • Size 872KB
          • SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
          • MD5 SHA1 SHA512 SSDEEP

          s

          • Path C:\Users\Admin\AppData\Local\Temp\594083\s
          • Size 899KB
          • SHA256 a28baa4405b10257d3cb8df20a02e2956f081dc46119d49d43a9feda6430642a
          • MD5 SHA1 SHA512 SSDEEP

          Cest

          • Path C:\Users\Admin\AppData\Local\Temp\Cest
          • Size 59KB
          • SHA256 720087dd3ae5a8ba851c7aff8d31720e2084b2f9c61d378853813fe33672b368
          • MD5 SHA1 SHA512 SSDEEP

          Considerations

          • Path C:\Users\Admin\AppData\Local\Temp\Considerations
          • Size 86KB
          • SHA256 900fa0d849d548b66ce5fb5d232f52dbefe0a366da2406c672f19cf32a0f0bcb
          • MD5 SHA1 SHA512 SSDEEP

          Dentists

          • Path C:\Users\Admin\AppData\Local\Temp\Dentists
          • Size 33KB
          • SHA256 144e7e328cf7323c73faec90342ad8876c25e43e94bd1b40f158198472f5e989
          • MD5 SHA1 SHA512 SSDEEP

          Equations

          • Path C:\Users\Admin\AppData\Local\Temp\Equations
          • Size 62KB
          • SHA256 0c7535e5e2a31bf2a9d7179c9577f0443f34effd9197346beb0c6dcf49389bc9
          • MD5 SHA1 SHA512 SSDEEP

          Ext

          • Path C:\Users\Admin\AppData\Local\Temp\Ext
          • Size 86KB
          • SHA256 ab2d3b8df2bedfe8c580d872f30d875c09e3a29061b3846dff43e36afb6663b1
          • MD5 SHA1 SHA512 SSDEEP

          Gig

          • Path C:\Users\Admin\AppData\Local\Temp\Gig
          • Size 89KB
          • SHA256 1093bcd920325d2904f6d1d5c8051e4015ac1a57966a9c197a6ee74d02d73d8c
          • MD5 SHA1 SHA512 SSDEEP

          Hole

          • Path C:\Users\Admin\AppData\Local\Temp\Hole
          • Size 99KB
          • SHA256 abc76dbed0e5b73b20565f4cb51598efe1597ad63081631ba3e45df2827974a0
          • MD5 SHA1 SHA512 SSDEEP

          Lease

          • Path C:\Users\Admin\AppData\Local\Temp\Lease
          • Size 53KB
          • SHA256 e96846a9e3cb74d243f1ddd55e6934ed3068807c0679ed050c409aec4592f20d
          • MD5 SHA1 SHA512 SSDEEP

          Marriage

          • Path C:\Users\Admin\AppData\Local\Temp\Marriage
          • Size 91KB
          • SHA256 bf67bf321527d057965238fa6eb454212475fcbec506ef8512d9b7f3d57de5dc
          • MD5 SHA1 SHA512 SSDEEP

          Mounted

          • Path C:\Users\Admin\AppData\Local\Temp\Mounted
          • Size 72KB
          • SHA256 a398460ec1f44523c7cf99878abd78456324eb490bcc18feb8bd266c84232af5
          • MD5 SHA1 SHA512 SSDEEP

          Recording

          • Path C:\Users\Admin\AppData\Local\Temp\Recording
          • Size 18KB
          • SHA256 231d848d0d72811ac52659fc12dd79efe72051c5974d07d9aea1130ff4391137
          • MD5 SHA1 SHA512 SSDEEP

          Release

          • Path C:\Users\Admin\AppData\Local\Temp\Release
          • Size 71KB
          • SHA256 88f3f61d9080fe1b54ebb4f8da65987e20b0ad1744a80514c666df4c01a2eacb
          • MD5 SHA1 SHA512 SSDEEP

          Savage

          • Path C:\Users\Admin\AppData\Local\Temp\Savage
          • Size 98KB
          • SHA256 f7425e689c3bee0dc7d527d29250765bc2f126e20ea4199d541542eb1c40678f
          • MD5 SHA1 SHA512 SSDEEP

          Seriously

          • Path C:\Users\Admin\AppData\Local\Temp\Seriously
          • Size 586B
          • SHA256 87123241fcfc29bdc7ed114af4e95306c13ef7654637c8168d736db746d898b7
          • MD5 SHA1 SHA512

          Thick

          • Path C:\Users\Admin\AppData\Local\Temp\Thick
          • Size 872KB
          • SHA256 04ab59b43246a06d16c9cc7700e817fa537fea69b83ec61d32a25d6172b5d095
          • MD5 SHA1 SHA512 SSDEEP

          memory/1888-44-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-45-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-46-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-47-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-48-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-49-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-50-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-51-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-55-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-54-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-60-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-43-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-66-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-73-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-78-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-79-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-86-0x0000000004870000-0x00000000048F2000-memory.dmp

          memory/1888-91-0x0000000004870000-0x00000000048F2000-memory.dmp