Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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 15:28

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:1728
    • 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:1896
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EtEJXD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF915.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2172
    • 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:4580
      • 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:3056
        • 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:4804
          • 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:2328
            • 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:4944
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EtEJXD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E1D.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:3944
            • 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:1420

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

    aee4db1966ea2fc7a81c92f1ba6debca

    SHA1

    7e31168a0681e22e16a8afc461536a4da61dec95

    SHA256

    7d30c6627471076cdfdc0bee2ab75ac540dfac5684d543223117d0a8bbdf05b4

    SHA512

    ebfb3bfcd2bcd6833171b5674020be20b457f00032e3f78af2d71181db3ec5b921d0db2f7a74bcede2a2fbb08eb98ae0b65f2b45a936745d36a345d1c0e353cb

  • 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

    acf43c766647820a39c3936b57e17caf

    SHA1

    7bb86869e7be85f480f3e3b3fbc7776aa3582065

    SHA256

    b1925a65540780009b32de4329e60422fb582f47fb4957776340c02dcac3bc2f

    SHA512

    1201a7ee713a326fe568631f6d0356c0b571f496904795e95ae37c21cea2203bc50942f84567adc2ff8abae712d915154e727adda0851a90d3e6017aa7d7e4e2

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ye31o1k0.aob.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\tmpF915.tmp

    Filesize

    1KB

    MD5

    16616403443c4667e75152afe21e5a55

    SHA1

    a84cbdf92b33ed69947a9827713d088bede2e69b

    SHA256

    22899af7690a490dcbc35d1db724304bec62aaea02fe570c12982b4f714b2f72

    SHA512

    e1bbc934e44d402e1db54d851c7cc1675e0d8154d1052ff5681b5170fd702f47b876a72bdf008db4b5c37b044a6e3c8c70984764d2c683c5de62c880d3fedac0

  • memory/1420-131-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-144-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-91-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-95-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-94-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-156-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-155-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-153-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-152-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-151-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-149-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-90-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-113-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-148-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-114-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-147-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-145-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-135-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-130-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-134-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1420-133-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1728-6-0x0000000005440000-0x000000000544A000-memory.dmp

    Filesize

    40KB

  • memory/1728-4-0x00000000054C0000-0x0000000005814000-memory.dmp

    Filesize

    3.3MB

  • memory/1728-3-0x00000000052A0000-0x0000000005332000-memory.dmp

    Filesize

    584KB

  • memory/1728-43-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1728-2-0x0000000005940000-0x0000000005EE4000-memory.dmp

    Filesize

    5.6MB

  • memory/1728-8-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

    Filesize

    4KB

  • memory/1728-5-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1728-7-0x0000000006D90000-0x0000000006DB6000-memory.dmp

    Filesize

    152KB

  • memory/1728-1-0x00000000007C0000-0x00000000008F0000-memory.dmp

    Filesize

    1.2MB

  • memory/1728-0-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

    Filesize

    4KB

  • memory/1728-11-0x000000000DC70000-0x000000000DD0C000-memory.dmp

    Filesize

    624KB

  • memory/1728-10-0x000000000AB10000-0x000000000ABD0000-memory.dmp

    Filesize

    768KB

  • memory/1728-9-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1896-22-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1896-62-0x00000000065D0000-0x00000000065EE000-memory.dmp

    Filesize

    120KB

  • memory/1896-72-0x0000000007660000-0x0000000007668000-memory.dmp

    Filesize

    32KB

  • memory/1896-75-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1896-70-0x0000000007580000-0x0000000007594000-memory.dmp

    Filesize

    80KB

  • memory/1896-69-0x0000000007570000-0x000000000757E000-memory.dmp

    Filesize

    56KB

  • memory/1896-68-0x0000000007540000-0x0000000007551000-memory.dmp

    Filesize

    68KB

  • memory/1896-67-0x00000000075C0000-0x0000000007656000-memory.dmp

    Filesize

    600KB

  • memory/1896-66-0x00000000073B0000-0x00000000073BA000-memory.dmp

    Filesize

    40KB

  • memory/1896-65-0x0000000007340000-0x000000000735A000-memory.dmp

    Filesize

    104KB

  • memory/1896-16-0x0000000004AA0000-0x0000000004AD6000-memory.dmp

    Filesize

    216KB

  • memory/1896-18-0x0000000005110000-0x0000000005738000-memory.dmp

    Filesize

    6.2MB

  • memory/1896-17-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1896-20-0x00000000050D0000-0x00000000050F2000-memory.dmp

    Filesize

    136KB

  • memory/1896-23-0x0000000005920000-0x0000000005986000-memory.dmp

    Filesize

    408KB

  • memory/1896-64-0x0000000007990000-0x000000000800A000-memory.dmp

    Filesize

    6.5MB

  • memory/1896-63-0x0000000007230000-0x00000000072D3000-memory.dmp

    Filesize

    652KB

  • memory/1896-71-0x0000000007680000-0x000000000769A000-memory.dmp

    Filesize

    104KB

  • memory/1896-51-0x00000000065F0000-0x0000000006622000-memory.dmp

    Filesize

    200KB

  • memory/1896-52-0x0000000071300000-0x000000007134C000-memory.dmp

    Filesize

    304KB

  • memory/1896-47-0x0000000006090000-0x00000000060DC000-memory.dmp

    Filesize

    304KB

  • memory/1896-46-0x0000000006000000-0x000000000601E000-memory.dmp

    Filesize

    120KB

  • memory/1896-24-0x0000000074EF0000-0x00000000756A0000-memory.dmp

    Filesize

    7.7MB

  • memory/1896-21-0x00000000057B0000-0x0000000005816000-memory.dmp

    Filesize

    408KB

  • memory/4580-32-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4580-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4580-30-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4580-40-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4580-44-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4944-111-0x0000000007E90000-0x0000000007EA4000-memory.dmp

    Filesize

    80KB

  • memory/4944-110-0x0000000007E50000-0x0000000007E61000-memory.dmp

    Filesize

    68KB

  • memory/4944-109-0x0000000006E90000-0x0000000006F33000-memory.dmp

    Filesize

    652KB

  • memory/4944-99-0x0000000075780000-0x00000000757CC000-memory.dmp

    Filesize

    304KB

  • memory/4944-98-0x0000000006980000-0x00000000069CC000-memory.dmp

    Filesize

    304KB