Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2024, 16:31

General

  • Target

    RFQ-00948-STELLION-878378.exe

  • Size

    1.1MB

  • MD5

    7d78937ebc3648958437741df13eec52

  • SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

  • SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

  • SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • SSDEEP

    24576:PYoOciJwQYaoRuivChV3DSwctuoqBMY9zVZEueHTf:PsbwQIRssqBMWVZEu

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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-NJK093

  • screenshot_crypt

    false

  • 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.

  • Remcos family
  • 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.

  • 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 4 IoCs
  • Suspicious use of SetThreadContext 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 8 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4280
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF472.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4488
    • C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe
      "C:\Users\Admin\AppData\Local\Temp\RFQ-00948-STELLION-878378.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5004
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1580
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QgjhVvUyb.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4988
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QgjhVvUyb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp47D2.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:792
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    ecc60cea1b73360426ab183da0b174d1

    SHA1

    32a1e02f776ca7a1fdcdfa24e27ee81838d93b5e

    SHA256

    3555f7578d6e13bfc5e6e2f460590f3a876d328e29fbb0d7b031247f780c247a

    SHA512

    da9741f10edbb2e668d72cf46a0004b2d918910cb4894c035abb563f2e6f38605387fe9164187a7fc74798d1cf0771fc9a4aaa5cad8418c6f7d113a81cb77a6e

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    1.1MB

    MD5

    7d78937ebc3648958437741df13eec52

    SHA1

    9b30169d5adb06c082d6b9e297368faad45725f5

    SHA256

    ed73c850e933acc5b599b4afb095b7e1244133c28e94fdb30ffb31b22a4b3c6a

    SHA512

    7e1acb40093bdb9a23d598a5766011409e6ef88b329c69eec3b32ea6873817e09b41e70383ae5eed3752283087db35ede2f28bf291c49df14fbeaf5b98decba4

  • 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

    f2d5c636bafad97963c0fdde73379d33

    SHA1

    ef46f734a620e88d6e0b3e1f60aa0e1539f20174

    SHA256

    d1943ccea1a358555cc932a7aad3a5e487e978d321542b08d691da28adec1cca

    SHA512

    4b6a6c7e7a58ea40dc58987cc3fd70a2d73288226be4040740254cd5f55eb3b14ce0084f938378bf5c5fc3ff95d1cd6eff1a7c923b20de8c9013c1bf51635514

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_imyqkhpk.0hc.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpF472.tmp

    Filesize

    1KB

    MD5

    9a7f061c4dbbacf36993286d0bde0426

    SHA1

    9155be5f7008cfb71df3d14d35d593ec7ef01f16

    SHA256

    b65d3b15129d23b296043379f323f572154e4a6b682609eb6c97e715073de622

    SHA512

    469d5fe7d600913eaa04e7e104db81681097b85467c4a88cbe9ecfe7c2a681565cede8a01916ef632b3cac3c96d35f49cb5d1d65f1d9a31be8a3db224d90561d

  • memory/2864-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-122-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2864-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2908-0-0x00000000751CE000-0x00000000751CF000-memory.dmp

    Filesize

    4KB

  • memory/2908-6-0x00000000081E0000-0x00000000081FC000-memory.dmp

    Filesize

    112KB

  • memory/2908-5-0x0000000005A60000-0x0000000005A6A000-memory.dmp

    Filesize

    40KB

  • memory/2908-10-0x000000000AE90000-0x000000000AF2C000-memory.dmp

    Filesize

    624KB

  • memory/2908-4-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/2908-3-0x00000000059C0000-0x0000000005A52000-memory.dmp

    Filesize

    584KB

  • memory/2908-7-0x00000000751CE000-0x00000000751CF000-memory.dmp

    Filesize

    4KB

  • memory/2908-30-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/2908-9-0x0000000008770000-0x0000000008834000-memory.dmp

    Filesize

    784KB

  • memory/2908-2-0x0000000006060000-0x0000000006604000-memory.dmp

    Filesize

    5.6MB

  • memory/2908-1-0x0000000000EA0000-0x0000000000FBC000-memory.dmp

    Filesize

    1.1MB

  • memory/2908-8-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/4280-17-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/4280-73-0x0000000007050000-0x0000000007064000-memory.dmp

    Filesize

    80KB

  • memory/4280-53-0x0000000006060000-0x00000000060AC000-memory.dmp

    Filesize

    304KB

  • memory/4280-54-0x0000000006AA0000-0x0000000006AD2000-memory.dmp

    Filesize

    200KB

  • memory/4280-55-0x0000000075A50000-0x0000000075A9C000-memory.dmp

    Filesize

    304KB

  • memory/4280-65-0x00000000060D0000-0x00000000060EE000-memory.dmp

    Filesize

    120KB

  • memory/4280-66-0x0000000006CE0000-0x0000000006D83000-memory.dmp

    Filesize

    652KB

  • memory/4280-67-0x0000000007450000-0x0000000007ACA000-memory.dmp

    Filesize

    6.5MB

  • memory/4280-68-0x0000000006E10000-0x0000000006E2A000-memory.dmp

    Filesize

    104KB

  • memory/4280-69-0x0000000006E80000-0x0000000006E8A000-memory.dmp

    Filesize

    40KB

  • memory/4280-70-0x0000000007090000-0x0000000007126000-memory.dmp

    Filesize

    600KB

  • memory/4280-71-0x0000000007010000-0x0000000007021000-memory.dmp

    Filesize

    68KB

  • memory/4280-72-0x0000000007040000-0x000000000704E000-memory.dmp

    Filesize

    56KB

  • memory/4280-52-0x0000000005AE0000-0x0000000005AFE000-memory.dmp

    Filesize

    120KB

  • memory/4280-74-0x0000000007150000-0x000000000716A000-memory.dmp

    Filesize

    104KB

  • memory/4280-75-0x0000000007130000-0x0000000007138000-memory.dmp

    Filesize

    32KB

  • memory/4280-78-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/4280-15-0x00000000021A0000-0x00000000021D6000-memory.dmp

    Filesize

    216KB

  • memory/4280-50-0x00000000054B0000-0x0000000005804000-memory.dmp

    Filesize

    3.3MB

  • memory/4280-28-0x0000000004CB0000-0x0000000004D16000-memory.dmp

    Filesize

    408KB

  • memory/4280-29-0x0000000004D20000-0x0000000004D86000-memory.dmp

    Filesize

    408KB

  • memory/4280-27-0x0000000004A10000-0x0000000004A32000-memory.dmp

    Filesize

    136KB

  • memory/4280-18-0x0000000004E80000-0x00000000054A8000-memory.dmp

    Filesize

    6.2MB

  • memory/4280-19-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/4280-20-0x00000000751C0000-0x0000000075970000-memory.dmp

    Filesize

    7.7MB

  • memory/4988-114-0x0000000007870000-0x0000000007913000-memory.dmp

    Filesize

    652KB

  • memory/4988-115-0x0000000007BB0000-0x0000000007BC1000-memory.dmp

    Filesize

    68KB

  • memory/4988-116-0x0000000007BF0000-0x0000000007C04000-memory.dmp

    Filesize

    80KB

  • memory/4988-104-0x0000000072860000-0x00000000728AC000-memory.dmp

    Filesize

    304KB

  • memory/4988-103-0x0000000006BB0000-0x0000000006BFC000-memory.dmp

    Filesize

    304KB

  • memory/5004-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/5004-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/5004-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/5004-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/5004-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB