Analysis

  • max time kernel
    152s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-08-2022 18:24

General

  • Target

    tmp.exe

  • Size

    2.4MB

  • MD5

    05f6fa39a293a904e53aad577744ee8e

  • SHA1

    99126bc0831b9d49eb46fd6dcdf7a12376db415d

  • SHA256

    928f75ac182baea6734e08cdd425bcea33bf7f27a43922b9f693d199d7aee550

  • SHA512

    3136c7a911b07496d0f85885780edf684592ec265173801a1a472406a8b73bc1bebe0fa48202ded9b83acb8a0f633d6b1ce1657adc6a5775ca8946010d76df9b

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

vivald21.hopto.org:3240

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-9HMSCN

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HziGohhJaJ.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3836
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HziGohhJaJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2546.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4216
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
        PID:4564
      • C:\Users\Admin\AppData\Local\Temp\tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
        2⤵
        • Checks computer location settings
        • Adds Run key to start application
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1700
        • C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:3096
        • C:\ProgramData\Synaptics\Synaptics.exe
          "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
          3⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:4076
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HziGohhJaJ.exe"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:5080
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HziGohhJaJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEF5C.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:4060
          • C:\ProgramData\Synaptics\Synaptics.exe
            "C:\ProgramData\Synaptics\Synaptics.exe"
            4⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:4996
            • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
              "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe"
              5⤵
              • Executes dropped EXE
              PID:3516

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Synaptics\Synaptics.exe
      Filesize

      2.4MB

      MD5

      05f6fa39a293a904e53aad577744ee8e

      SHA1

      99126bc0831b9d49eb46fd6dcdf7a12376db415d

      SHA256

      928f75ac182baea6734e08cdd425bcea33bf7f27a43922b9f693d199d7aee550

      SHA512

      3136c7a911b07496d0f85885780edf684592ec265173801a1a472406a8b73bc1bebe0fa48202ded9b83acb8a0f633d6b1ce1657adc6a5775ca8946010d76df9b

    • C:\ProgramData\Synaptics\Synaptics.exe
      Filesize

      2.4MB

      MD5

      05f6fa39a293a904e53aad577744ee8e

      SHA1

      99126bc0831b9d49eb46fd6dcdf7a12376db415d

      SHA256

      928f75ac182baea6734e08cdd425bcea33bf7f27a43922b9f693d199d7aee550

      SHA512

      3136c7a911b07496d0f85885780edf684592ec265173801a1a472406a8b73bc1bebe0fa48202ded9b83acb8a0f633d6b1ce1657adc6a5775ca8946010d76df9b

    • C:\ProgramData\Synaptics\Synaptics.exe
      Filesize

      2.4MB

      MD5

      05f6fa39a293a904e53aad577744ee8e

      SHA1

      99126bc0831b9d49eb46fd6dcdf7a12376db415d

      SHA256

      928f75ac182baea6734e08cdd425bcea33bf7f27a43922b9f693d199d7aee550

      SHA512

      3136c7a911b07496d0f85885780edf684592ec265173801a1a472406a8b73bc1bebe0fa48202ded9b83acb8a0f633d6b1ce1657adc6a5775ca8946010d76df9b

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      18KB

      MD5

      3ddf556da360c3b91899e9cc27621197

      SHA1

      b3b0c569dec4bbc411cc954a43c22c86269cf777

      SHA256

      aeabc52f4f629a6cbe1d0b9e7de20e8fdbb50d8bb380618d24ba32bb14cff97a

      SHA512

      f71a71a2f582e814522fd25dff0bcc8516e34f9ba7f3539c12a894a227091412cbba73fde158d4f699dd70a8c30f9c3f4927796d6453546296921af93bab908c

    • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
      Filesize

      466KB

      MD5

      e729b5c9501252eba5d7917256950424

      SHA1

      4dd74a695e40e22760e00a532677e1cc8857687c

      SHA256

      395cf5e6d3f891a3049ec3412a97e687a8fdd077834fd30a83dcf9b3fb0f2807

      SHA512

      31eac3aa066b30019f51b3678ed8dc628f8d518a2c05b93c15798ca2d7bce263245e700fe7a5e3af29eed5d47d66cf70ca08a7220ebd8d054e1f8b02dfa13443

    • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
      Filesize

      466KB

      MD5

      e729b5c9501252eba5d7917256950424

      SHA1

      4dd74a695e40e22760e00a532677e1cc8857687c

      SHA256

      395cf5e6d3f891a3049ec3412a97e687a8fdd077834fd30a83dcf9b3fb0f2807

      SHA512

      31eac3aa066b30019f51b3678ed8dc628f8d518a2c05b93c15798ca2d7bce263245e700fe7a5e3af29eed5d47d66cf70ca08a7220ebd8d054e1f8b02dfa13443

    • C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
      Filesize

      466KB

      MD5

      e729b5c9501252eba5d7917256950424

      SHA1

      4dd74a695e40e22760e00a532677e1cc8857687c

      SHA256

      395cf5e6d3f891a3049ec3412a97e687a8fdd077834fd30a83dcf9b3fb0f2807

      SHA512

      31eac3aa066b30019f51b3678ed8dc628f8d518a2c05b93c15798ca2d7bce263245e700fe7a5e3af29eed5d47d66cf70ca08a7220ebd8d054e1f8b02dfa13443

    • C:\Users\Admin\AppData\Local\Temp\._cache_tmp.exe
      Filesize

      466KB

      MD5

      e729b5c9501252eba5d7917256950424

      SHA1

      4dd74a695e40e22760e00a532677e1cc8857687c

      SHA256

      395cf5e6d3f891a3049ec3412a97e687a8fdd077834fd30a83dcf9b3fb0f2807

      SHA512

      31eac3aa066b30019f51b3678ed8dc628f8d518a2c05b93c15798ca2d7bce263245e700fe7a5e3af29eed5d47d66cf70ca08a7220ebd8d054e1f8b02dfa13443

    • C:\Users\Admin\AppData\Local\Temp\tmp2546.tmp
      Filesize

      1KB

      MD5

      451b80a26990149a410b828449967da3

      SHA1

      c2f3bd18bc549491f7d343b7d3852fed0bc9fc45

      SHA256

      47f041c99f49f34e799dfbfb95a30f9a6b13eb5ea921512f89f5f0dd6624912c

      SHA512

      19b4ec1ca47ec86c7edd4365fe414c45a7cdeafbc638fac7eaf205bc1aa7030196ca524d5f3b6f2cc8b9aadac0820086e4f38552abc0f1acd6431821e8155e32

    • C:\Users\Admin\AppData\Local\Temp\tmpEF5C.tmp
      Filesize

      1KB

      MD5

      451b80a26990149a410b828449967da3

      SHA1

      c2f3bd18bc549491f7d343b7d3852fed0bc9fc45

      SHA256

      47f041c99f49f34e799dfbfb95a30f9a6b13eb5ea921512f89f5f0dd6624912c

      SHA512

      19b4ec1ca47ec86c7edd4365fe414c45a7cdeafbc638fac7eaf205bc1aa7030196ca524d5f3b6f2cc8b9aadac0820086e4f38552abc0f1acd6431821e8155e32

    • memory/1700-145-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1700-144-0x0000000000000000-mapping.dmp
    • memory/1700-147-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1700-158-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1700-149-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1700-150-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3096-152-0x0000000000000000-mapping.dmp
    • memory/3516-180-0x0000000000000000-mapping.dmp
    • memory/3836-162-0x00000000078C0000-0x0000000007F3A000-memory.dmp
      Filesize

      6.5MB

    • memory/3836-166-0x00000000074A0000-0x00000000074AE000-memory.dmp
      Filesize

      56KB

    • memory/3836-151-0x0000000005F70000-0x0000000005F8E000-memory.dmp
      Filesize

      120KB

    • memory/3836-142-0x00000000052B0000-0x00000000058D8000-memory.dmp
      Filesize

      6.2MB

    • memory/3836-138-0x0000000000000000-mapping.dmp
    • memory/3836-140-0x0000000002680000-0x00000000026B6000-memory.dmp
      Filesize

      216KB

    • memory/3836-168-0x0000000007590000-0x0000000007598000-memory.dmp
      Filesize

      32KB

    • memory/3836-148-0x0000000005050000-0x00000000050B6000-memory.dmp
      Filesize

      408KB

    • memory/3836-159-0x0000000006F20000-0x0000000006F52000-memory.dmp
      Filesize

      200KB

    • memory/3836-160-0x000000006F900000-0x000000006F94C000-memory.dmp
      Filesize

      304KB

    • memory/3836-161-0x0000000006EE0000-0x0000000006EFE000-memory.dmp
      Filesize

      120KB

    • memory/3836-146-0x0000000004EB0000-0x0000000004ED2000-memory.dmp
      Filesize

      136KB

    • memory/3836-163-0x0000000007270000-0x000000000728A000-memory.dmp
      Filesize

      104KB

    • memory/3836-164-0x00000000072E0000-0x00000000072EA000-memory.dmp
      Filesize

      40KB

    • memory/3836-165-0x00000000074F0000-0x0000000007586000-memory.dmp
      Filesize

      600KB

    • memory/3836-167-0x00000000075B0000-0x00000000075CA000-memory.dmp
      Filesize

      104KB

    • memory/4060-170-0x0000000000000000-mapping.dmp
    • memory/4076-155-0x0000000000000000-mapping.dmp
    • memory/4216-139-0x0000000000000000-mapping.dmp
    • memory/4564-143-0x0000000000000000-mapping.dmp
    • memory/4856-134-0x0000000007680000-0x0000000007712000-memory.dmp
      Filesize

      584KB

    • memory/4856-137-0x000000000B5F0000-0x000000000B656000-memory.dmp
      Filesize

      408KB

    • memory/4856-136-0x000000000B350000-0x000000000B3EC000-memory.dmp
      Filesize

      624KB

    • memory/4856-135-0x0000000007600000-0x000000000760A000-memory.dmp
      Filesize

      40KB

    • memory/4856-132-0x0000000000520000-0x0000000000790000-memory.dmp
      Filesize

      2.4MB

    • memory/4856-133-0x0000000007B90000-0x0000000008134000-memory.dmp
      Filesize

      5.6MB

    • memory/4996-173-0x0000000000000000-mapping.dmp
    • memory/4996-177-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4996-179-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4996-184-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/5080-169-0x0000000000000000-mapping.dmp
    • memory/5080-183-0x00000000721C0000-0x000000007220C000-memory.dmp
      Filesize

      304KB