Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/03/2023, 20:12

General

  • Target

    52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3.exe

  • Size

    1.2MB

  • MD5

    718851e3f679d37e670918ffd078961a

  • SHA1

    9c10c66b026582d97290c470b551d262e86d42a3

  • SHA256

    52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3

  • SHA512

    f47bb5b1955b0dc1d7e161a1a0b82cdefa909fc10f55346f468333867e4bce35e669e33b1a716abc9b10dd8b012f952b79677ec7049234f845693310f17f06b0

  • SSDEEP

    24576:r1QV+zUQjIdnYfnj349Nt+krzbholb28DMx//CN/k3BRfBZ+:rmszUB4nb63n+lb/DynCN/k3BlB

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

79.134.225.23:1097

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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-UY1HFR

  • 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.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 8 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.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3.exe
    "C:\Users\Admin\AppData\Local\Temp\52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pEiJZszBZRr.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3924
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pEiJZszBZRr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A3C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2192
    • C:\Users\Admin\AppData\Local\Temp\52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3.exe
      "C:\Users\Admin\AppData\Local\Temp\52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:560
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4624
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pEiJZszBZRr.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2612
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pEiJZszBZRr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD188.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:768
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          PID:1360

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          1.2MB

          MD5

          718851e3f679d37e670918ffd078961a

          SHA1

          9c10c66b026582d97290c470b551d262e86d42a3

          SHA256

          52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3

          SHA512

          f47bb5b1955b0dc1d7e161a1a0b82cdefa909fc10f55346f468333867e4bce35e669e33b1a716abc9b10dd8b012f952b79677ec7049234f845693310f17f06b0

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          1.2MB

          MD5

          718851e3f679d37e670918ffd078961a

          SHA1

          9c10c66b026582d97290c470b551d262e86d42a3

          SHA256

          52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3

          SHA512

          f47bb5b1955b0dc1d7e161a1a0b82cdefa909fc10f55346f468333867e4bce35e669e33b1a716abc9b10dd8b012f952b79677ec7049234f845693310f17f06b0

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          1.2MB

          MD5

          718851e3f679d37e670918ffd078961a

          SHA1

          9c10c66b026582d97290c470b551d262e86d42a3

          SHA256

          52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3

          SHA512

          f47bb5b1955b0dc1d7e161a1a0b82cdefa909fc10f55346f468333867e4bce35e669e33b1a716abc9b10dd8b012f952b79677ec7049234f845693310f17f06b0

        • C:\ProgramData\Remcos\remcos.exe

          Filesize

          1.2MB

          MD5

          718851e3f679d37e670918ffd078961a

          SHA1

          9c10c66b026582d97290c470b551d262e86d42a3

          SHA256

          52062e748f2857bf6bc3161cdfade85ec042d45093673514ca1787f7216a70f3

          SHA512

          f47bb5b1955b0dc1d7e161a1a0b82cdefa909fc10f55346f468333867e4bce35e669e33b1a716abc9b10dd8b012f952b79677ec7049234f845693310f17f06b0

        • 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

          914e5741da527d7ed4abe6db4a8abd30

          SHA1

          0e69bfea30dcaeb15a49f20dc4e77f292796cfab

          SHA256

          1068e298f8ac101fc0ad6710a1c145b6131c9bb7db3bbc32929915af8534edf9

          SHA512

          85a1953b6f0403d87c9493944e35d7ced9237f4bc30579ea8aa98b086b3aa23773a1baea2d00a6043fe6cdb7ee6b82f900a053ce341c0ad8d30c654135e5311f

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hkv2fbex.2mi.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp2A3C.tmp

          Filesize

          1KB

          MD5

          0d58d0d946ecfb2a5dc2f099749c3b09

          SHA1

          b592bf4cec2c3d55741df2c450243b313d06b0e7

          SHA256

          d3765566ca6e54c1cdc07ad7ee6ac261651ec00cf1a00c9147d7b1095a27a852

          SHA512

          a8ac0f00749bded4c0edbb4dd745a70b6e43d1c4d835da87e6f602d125f30caeb7b4a77e49809081f289db8fec4115c61fdc18caa4eebcf569744bf1f7e67494

        • C:\Users\Admin\AppData\Local\Temp\tmpD188.tmp

          Filesize

          1KB

          MD5

          0d58d0d946ecfb2a5dc2f099749c3b09

          SHA1

          b592bf4cec2c3d55741df2c450243b313d06b0e7

          SHA256

          d3765566ca6e54c1cdc07ad7ee6ac261651ec00cf1a00c9147d7b1095a27a852

          SHA512

          a8ac0f00749bded4c0edbb4dd745a70b6e43d1c4d835da87e6f602d125f30caeb7b4a77e49809081f289db8fec4115c61fdc18caa4eebcf569744bf1f7e67494

        • memory/560-178-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/560-147-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/560-148-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/560-175-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/560-150-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-220-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-251-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-276-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-275-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-274-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-273-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-272-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-271-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-270-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-249-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-248-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-269-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-268-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-267-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-266-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-265-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-264-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-263-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-262-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-261-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-260-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-259-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-258-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-257-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-256-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-247-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-246-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-245-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-218-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-244-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-243-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-222-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-223-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-255-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-254-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-253-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-252-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-250-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-238-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-240-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-241-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1360-242-0x0000000000400000-0x0000000000480000-memory.dmp

          Filesize

          512KB

        • memory/1528-134-0x0000000005F80000-0x0000000006524000-memory.dmp

          Filesize

          5.6MB

        • memory/1528-133-0x0000000000F70000-0x00000000010A2000-memory.dmp

          Filesize

          1.2MB

        • memory/1528-135-0x0000000005A70000-0x0000000005B02000-memory.dmp

          Filesize

          584KB

        • memory/1528-136-0x0000000005A20000-0x0000000005A30000-memory.dmp

          Filesize

          64KB

        • memory/1528-137-0x0000000005B20000-0x0000000005B2A000-memory.dmp

          Filesize

          40KB

        • memory/1528-138-0x0000000005A20000-0x0000000005A30000-memory.dmp

          Filesize

          64KB

        • memory/1528-139-0x0000000007450000-0x00000000074EC000-memory.dmp

          Filesize

          624KB

        • memory/2612-236-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

          Filesize

          64KB

        • memory/2612-224-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

          Filesize

          64KB

        • memory/2612-237-0x000000007F6C0000-0x000000007F6D0000-memory.dmp

          Filesize

          64KB

        • memory/2612-226-0x0000000073580000-0x00000000735CC000-memory.dmp

          Filesize

          304KB

        • memory/2612-225-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

          Filesize

          64KB

        • memory/3924-195-0x00000000071A0000-0x00000000071BA000-memory.dmp

          Filesize

          104KB

        • memory/3924-182-0x00000000702D0000-0x000000007031C000-memory.dmp

          Filesize

          304KB

        • memory/3924-200-0x00000000074C0000-0x00000000074C8000-memory.dmp

          Filesize

          32KB

        • memory/3924-199-0x00000000074E0000-0x00000000074FA000-memory.dmp

          Filesize

          104KB

        • memory/3924-198-0x00000000073D0000-0x00000000073DE000-memory.dmp

          Filesize

          56KB

        • memory/3924-197-0x0000000007420000-0x00000000074B6000-memory.dmp

          Filesize

          600KB

        • memory/3924-196-0x0000000007220000-0x000000000722A000-memory.dmp

          Filesize

          40KB

        • memory/3924-194-0x000000007FBC0000-0x000000007FBD0000-memory.dmp

          Filesize

          64KB

        • memory/3924-152-0x0000000004F50000-0x0000000004FB6000-memory.dmp

          Filesize

          408KB

        • memory/3924-193-0x00000000077F0000-0x0000000007E6A000-memory.dmp

          Filesize

          6.5MB

        • memory/3924-192-0x0000000006430000-0x000000000644E000-memory.dmp

          Filesize

          120KB

        • memory/3924-155-0x0000000005750000-0x00000000057B6000-memory.dmp

          Filesize

          408KB

        • memory/3924-181-0x0000000006450000-0x0000000006482000-memory.dmp

          Filesize

          200KB

        • memory/3924-180-0x0000000002670000-0x0000000002680000-memory.dmp

          Filesize

          64KB

        • memory/3924-149-0x0000000004EB0000-0x0000000004ED2000-memory.dmp

          Filesize

          136KB

        • memory/3924-144-0x0000000002570000-0x00000000025A6000-memory.dmp

          Filesize

          216KB

        • memory/3924-146-0x0000000005030000-0x0000000005658000-memory.dmp

          Filesize

          6.2MB

        • memory/3924-173-0x0000000002670000-0x0000000002680000-memory.dmp

          Filesize

          64KB

        • memory/3924-167-0x0000000002670000-0x0000000002680000-memory.dmp

          Filesize

          64KB

        • memory/3924-166-0x0000000005E80000-0x0000000005E9E000-memory.dmp

          Filesize

          120KB

        • memory/4624-179-0x0000000005390000-0x00000000053A0000-memory.dmp

          Filesize

          64KB

        • memory/4624-203-0x0000000005390000-0x00000000053A0000-memory.dmp

          Filesize

          64KB