Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 15:23

General

  • Target

    Receipt-#202431029B3.exe

  • Size

    1.2MB

  • MD5

    152c7485cbeb3bc280d028e065891d6e

  • SHA1

    0ddffbb675b4569217ea960b288da13a67801983

  • SHA256

    1420ee82c4ec66f06a832f01c43b0aca270fa9990f82f23fb36b899cabe11590

  • SHA512

    1dc27627c964b8d39251833e4a97b3c51b334fd9cdc132094082a1ac4cae4a6d97258e04e9b87de929c18340d4af53768fa99469085db777bafb59559b1208b3

  • SSDEEP

    24576:dMZMXvpjs+e2azR9jSca2PEt2kWT3GJqhDYRoPd+pT2A:AMfpjs+b2PEfYY+PspT2A

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

172.245.244.69:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    JavaRuntime.exe

  • copy_folder

    Java

  • 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-I0P1F7

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    JavaRuntime

  • 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 4 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 10 IoCs

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

  • Modifies registry class 1 IoCs
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Receipt-#202431029B3.exe
    "C:\Users\Admin\AppData\Local\Temp\Receipt-#202431029B3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4560
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EtEJXD.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3900
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EtEJXD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE80E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2200
    • C:\Users\Admin\AppData\Local\Temp\Receipt-#202431029B3.exe
      "C:\Users\Admin\AppData\Local\Temp\Receipt-#202431029B3.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1388
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Java\JavaRuntime.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4284
          • C:\ProgramData\Java\JavaRuntime.exe
            C:\ProgramData\Java\JavaRuntime.exe
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3100
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EtEJXD.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1628
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EtEJXD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2E00.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:3336
            • C:\ProgramData\Java\JavaRuntime.exe
              "C:\ProgramData\Java\JavaRuntime.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:5028

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Java\JavaRuntime.exe

    Filesize

    1.2MB

    MD5

    152c7485cbeb3bc280d028e065891d6e

    SHA1

    0ddffbb675b4569217ea960b288da13a67801983

    SHA256

    1420ee82c4ec66f06a832f01c43b0aca270fa9990f82f23fb36b899cabe11590

    SHA512

    1dc27627c964b8d39251833e4a97b3c51b334fd9cdc132094082a1ac4cae4a6d97258e04e9b87de929c18340d4af53768fa99469085db777bafb59559b1208b3

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    fd90900478008a926d1fd2814471488d

    SHA1

    5f1f38950dfde425eebecd0c134a882a767a6a13

    SHA256

    26a21356f580b3aec9e03fefef40c1b32ed9080273b845bf956d63ebba206de7

    SHA512

    b4237a85f636c2b1dd1675b819a2ffa04910996794fd0773597672c51f37d917d854dcb57aeb439567da33f570005609c1077c10110a8e0d073791aa0c2b339a

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

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    91f32f37bc0ec5ba6fc0c365ea39c628

    SHA1

    b3ceb3745acfbf3c0102ce8b544a0987f73639d5

    SHA256

    e75b289d7ebd5184339ee8a82d98f60eb2fd94abda7ad8b7bdeb2149254ae14d

    SHA512

    cea0fe2f8fa636c0b25f05c84cea1018518827d6ff89463b8f8fa14affd663bb1a98b8a3a807a4620e8203797940e86c61acf9b413d1528b8e77b86c00949ad3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uvdfbi22.bp4.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    392B

    MD5

    7935d3c5851b7744eaf93d733908c25c

    SHA1

    d4eea4f1943a84663fa887cea509f2527dc04e49

    SHA256

    bced2446ec2ee988dd2060e4a02be9b7413485da23be0be4e34934827518cb42

    SHA512

    25556efb93a58d6ba43345c1e5f39ba642a90fc1c051c3094e0e70b79d4a9d31221f1f1d9c6b03c59e852cf6a7a27ee2ce8124d885e14dd5ccca89062f0943cc

  • C:\Users\Admin\AppData\Local\Temp\tmpE80E.tmp

    Filesize

    1KB

    MD5

    15abc7635796b765aa4b4f78187de272

    SHA1

    cfb45c112827b0e644b785e130571942ee72e889

    SHA256

    387fc4265ec9b17e4889ab0c9b1259efc3b581f45d3baae0c10be829da067bd8

    SHA512

    ee6abda64f93440ce12022ea2eba7a8f131fa839c302b5713751f358f7e5bce0d44b1cda2c919f0dd3bf2a2fa4fa3de201d5ee28cb7a0f7efc865ff392d89ea6

  • memory/1476-45-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1476-24-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1476-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1476-22-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1476-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1628-99-0x00000000066D0000-0x000000000671C000-memory.dmp

    Filesize

    304KB

  • memory/1628-100-0x00000000750F0000-0x000000007513C000-memory.dmp

    Filesize

    304KB

  • memory/1628-110-0x0000000007890000-0x0000000007933000-memory.dmp

    Filesize

    652KB

  • memory/1628-111-0x0000000007B60000-0x0000000007B71000-memory.dmp

    Filesize

    68KB

  • memory/1628-112-0x0000000007BA0000-0x0000000007BB4000-memory.dmp

    Filesize

    80KB

  • memory/3100-66-0x0000000006A70000-0x0000000006A96000-memory.dmp

    Filesize

    152KB

  • memory/3900-62-0x0000000006D60000-0x0000000006D7E000-memory.dmp

    Filesize

    120KB

  • memory/3900-70-0x00000000070E0000-0x00000000070EE000-memory.dmp

    Filesize

    56KB

  • memory/3900-76-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-20-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-19-0x0000000004CB0000-0x00000000052D8000-memory.dmp

    Filesize

    6.2MB

  • memory/3900-32-0x0000000005490000-0x00000000054F6000-memory.dmp

    Filesize

    408KB

  • memory/3900-31-0x00000000053B0000-0x0000000005416000-memory.dmp

    Filesize

    408KB

  • memory/3900-30-0x0000000005310000-0x0000000005332000-memory.dmp

    Filesize

    136KB

  • memory/3900-17-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-44-0x0000000005B70000-0x0000000005B8E000-memory.dmp

    Filesize

    120KB

  • memory/3900-46-0x0000000005BA0000-0x0000000005BEC000-memory.dmp

    Filesize

    304KB

  • memory/3900-16-0x0000000002260000-0x0000000002296000-memory.dmp

    Filesize

    216KB

  • memory/3900-73-0x00000000071D0000-0x00000000071D8000-memory.dmp

    Filesize

    32KB

  • memory/3900-23-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-52-0x000000006FCE0000-0x000000006FD2C000-memory.dmp

    Filesize

    304KB

  • memory/3900-51-0x0000000006140000-0x0000000006172000-memory.dmp

    Filesize

    200KB

  • memory/3900-72-0x00000000071F0000-0x000000000720A000-memory.dmp

    Filesize

    104KB

  • memory/3900-63-0x0000000006D80000-0x0000000006E23000-memory.dmp

    Filesize

    652KB

  • memory/3900-64-0x0000000007500000-0x0000000007B7A000-memory.dmp

    Filesize

    6.5MB

  • memory/3900-65-0x0000000006EB0000-0x0000000006ECA000-memory.dmp

    Filesize

    104KB

  • memory/3900-71-0x00000000070F0000-0x0000000007104000-memory.dmp

    Filesize

    80KB

  • memory/3900-67-0x0000000006F30000-0x0000000006F3A000-memory.dmp

    Filesize

    40KB

  • memory/3900-68-0x0000000007130000-0x00000000071C6000-memory.dmp

    Filesize

    600KB

  • memory/3900-69-0x00000000070B0000-0x00000000070C1000-memory.dmp

    Filesize

    68KB

  • memory/4560-10-0x000000000B240000-0x000000000B300000-memory.dmp

    Filesize

    768KB

  • memory/4560-4-0x0000000006540000-0x0000000006894000-memory.dmp

    Filesize

    3.3MB

  • memory/4560-0-0x000000007484E000-0x000000007484F000-memory.dmp

    Filesize

    4KB

  • memory/4560-11-0x000000000D400000-0x000000000D49C000-memory.dmp

    Filesize

    624KB

  • memory/4560-28-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4560-8-0x000000007484E000-0x000000007484F000-memory.dmp

    Filesize

    4KB

  • memory/4560-1-0x0000000000F20000-0x0000000001050000-memory.dmp

    Filesize

    1.2MB

  • memory/4560-9-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/4560-2-0x0000000005F90000-0x0000000006534000-memory.dmp

    Filesize

    5.6MB

  • memory/4560-3-0x0000000005A80000-0x0000000005B12000-memory.dmp

    Filesize

    584KB

  • memory/4560-7-0x0000000005F70000-0x0000000005F96000-memory.dmp

    Filesize

    152KB

  • memory/4560-6-0x0000000005C80000-0x0000000005C8A000-memory.dmp

    Filesize

    40KB

  • memory/4560-5-0x0000000074840000-0x0000000074FF0000-memory.dmp

    Filesize

    7.7MB

  • memory/5028-87-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-83-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-86-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-114-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-116-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-118-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-82-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-131-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-132-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-135-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-134-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/5028-136-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB