Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 11:40

General

  • Target

    SecuriteInfo.com.Win32.RATX-gen.5931.50.exe

  • Size

    910KB

  • MD5

    129ab29e55efb205471261bc48380372

  • SHA1

    75670ebbf86906138538caad68b5a75f17097be3

  • SHA256

    322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24

  • SHA512

    8020ed1d32fce5d9931da0e52b501c985de294c323a3d70a1f3873642f1a323f79479d555ddb5c2991d68c4300cbb95607e7582f42213080798a8d9de78a70e9

  • SSDEEP

    24576:qzKGObd+rcjuV/B1mV4uhB4tqyJy70oRXr85ABIxWD:qzKGOorcc8Q5k70o5g58Ixc

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.243.155:7643

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-C9YEJ8

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • 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 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 1 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 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.5931.50.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.5931.50.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3856
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.RATX-gen.5931.50.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3492
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kkUfsLDbd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1656
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kkUfsLDbd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC3B.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1292
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    5bc40e9ba518bd80a63a5b6049aada9e

    SHA1

    24096d821d11e73dafd44e4c02f7bd97c83a4646

    SHA256

    ca0b5be23b83854192f26ee4b741b77a45279f77719d3cc3330cba2db4cc1991

    SHA512

    36219eced78589f110ef44d7537195c9957b3f3d133c29e7701c98b54d4326ca077b4207bcbeab1e78358509b5a593d6199871441fe25329a0c579e4610cb962

  • 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

    1a37b099796e2ee71c5e3aa0544f73f3

    SHA1

    d0de6bad38a9ce77721093f1f6e82048a08f14d3

    SHA256

    3a9a37ddd3fbef7a5a2c98bbe86cc84ed15b44654618f1c4cedf7f33ec344b9b

    SHA512

    2adfb0b6f9a95e3d4b0ef28980c90847a3eaa045453610e7f69097d8eb9576376f0941e8f1ceaad5b731ff68f8f037987677413c4dc89ee57f0eb467734822c2

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pynlj5fl.qrb.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpBC3B.tmp

    Filesize

    1KB

    MD5

    ed725fe5ac06ca253bd0925d2c28d3b7

    SHA1

    bfd4fffba72b2d256e08adac8fcc4615c8ea75f0

    SHA256

    cae53a43519957492c8ba478d860d1849fad3eb430c398319280c38073ef17ea

    SHA512

    8b3661a21a4e279f8866199a04eb26a6e592f63e71c39450296728a9e8d1344984474c50c4f0296ea8f49dc2bea3c9608e339b1f10d5a417e698ef047b466a90

  • memory/1656-90-0x0000000007D30000-0x0000000007D3E000-memory.dmp

    Filesize

    56KB

  • memory/1656-92-0x0000000007E40000-0x0000000007E5A000-memory.dmp

    Filesize

    104KB

  • memory/1656-89-0x0000000007D00000-0x0000000007D11000-memory.dmp

    Filesize

    68KB

  • memory/1656-88-0x0000000007D80000-0x0000000007E16000-memory.dmp

    Filesize

    600KB

  • memory/1656-73-0x0000000074FF0000-0x000000007503C000-memory.dmp

    Filesize

    304KB

  • memory/1656-55-0x00000000067B0000-0x00000000067CE000-memory.dmp

    Filesize

    120KB

  • memory/1656-45-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/1656-53-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/1656-100-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/1656-29-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3492-19-0x0000000005A50000-0x0000000005A72000-memory.dmp

    Filesize

    136KB

  • memory/3492-99-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3492-21-0x00000000061E0000-0x0000000006246000-memory.dmp

    Filesize

    408KB

  • memory/3492-28-0x0000000006310000-0x0000000006664000-memory.dmp

    Filesize

    3.3MB

  • memory/3492-18-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3492-16-0x0000000005AD0000-0x00000000060F8000-memory.dmp

    Filesize

    6.2MB

  • memory/3492-20-0x0000000006170000-0x00000000061D6000-memory.dmp

    Filesize

    408KB

  • memory/3492-93-0x0000000007F60000-0x0000000007F68000-memory.dmp

    Filesize

    32KB

  • memory/3492-91-0x0000000007E80000-0x0000000007E94000-memory.dmp

    Filesize

    80KB

  • memory/3492-87-0x0000000007CB0000-0x0000000007CBA000-memory.dmp

    Filesize

    40KB

  • memory/3492-85-0x0000000008280000-0x00000000088FA000-memory.dmp

    Filesize

    6.5MB

  • memory/3492-86-0x0000000007C40000-0x0000000007C5A000-memory.dmp

    Filesize

    104KB

  • memory/3492-17-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3492-62-0x00000000078E0000-0x0000000007912000-memory.dmp

    Filesize

    200KB

  • memory/3492-15-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3492-63-0x0000000074FF0000-0x000000007503C000-memory.dmp

    Filesize

    304KB

  • memory/3492-14-0x0000000005370000-0x00000000053A6000-memory.dmp

    Filesize

    216KB

  • memory/3492-56-0x00000000069C0000-0x0000000006A0C000-memory.dmp

    Filesize

    304KB

  • memory/3492-82-0x00000000078A0000-0x00000000078BE000-memory.dmp

    Filesize

    120KB

  • memory/3492-84-0x0000000007B20000-0x0000000007BC3000-memory.dmp

    Filesize

    652KB

  • memory/3672-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-134-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-126-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-118-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-110-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3672-103-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3856-54-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3856-2-0x0000000005EA0000-0x0000000006444000-memory.dmp

    Filesize

    5.6MB

  • memory/3856-3-0x00000000057A0000-0x0000000005832000-memory.dmp

    Filesize

    584KB

  • memory/3856-0-0x000000007476E000-0x000000007476F000-memory.dmp

    Filesize

    4KB

  • memory/3856-1-0x0000000000CE0000-0x0000000000DCA000-memory.dmp

    Filesize

    936KB

  • memory/3856-4-0x0000000074760000-0x0000000074F10000-memory.dmp

    Filesize

    7.7MB

  • memory/3856-5-0x0000000005860000-0x000000000586A000-memory.dmp

    Filesize

    40KB

  • memory/3856-6-0x0000000006A50000-0x0000000006A6E000-memory.dmp

    Filesize

    120KB

  • memory/3856-7-0x0000000006A70000-0x0000000006A86000-memory.dmp

    Filesize

    88KB

  • memory/3856-8-0x0000000009000000-0x00000000090C0000-memory.dmp

    Filesize

    768KB

  • memory/3856-51-0x000000007476E000-0x000000007476F000-memory.dmp

    Filesize

    4KB

  • memory/3856-9-0x0000000009160000-0x00000000091FC000-memory.dmp

    Filesize

    624KB