Analysis

  • max time kernel
    147s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-08-2024 02:41

General

  • Target

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe

  • Size

    998KB

  • MD5

    2732e2eb4efa4972d94d993a31a67f44

  • SHA1

    60e02e1d0f4f002532f7ea2fc24adaf80db430bd

  • SHA256

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

  • SHA512

    159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

  • SSDEEP

    24576:4ALYnT2KsbNqGuYsqf3hfGwuvMSNMTosRap+EyT:4xT9oqVq5fPcMS/tp+F

Malware Config

Extracted

Family

remcos

Botnet

CLIENT

C2

64.188.18.85:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    xlorers.exe

  • copy_folder

    xlorers

  • 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-GK0LTU

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 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 24 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe
    "C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.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:4336
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YexrSjnKtvvgI.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4964
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YexrSjnKtvvgI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDFA2.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2688
    • C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe
      "C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4144
      • C:\ProgramData\xlorers\xlorers.exe
        "C:\ProgramData\xlorers\xlorers.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:1236
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YexrSjnKtvvgI.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3880
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YexrSjnKtvvgI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp38AF.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1000
        • C:\ProgramData\xlorers\xlorers.exe
          "C:\ProgramData\xlorers\xlorers.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3412
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\qhuztgibgb"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:4332
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\akhkuztdtjdsn"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:4456
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\lemcurdxhrvxydfn"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1088

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\xlorers\xlorers.exe

    Filesize

    998KB

    MD5

    2732e2eb4efa4972d94d993a31a67f44

    SHA1

    60e02e1d0f4f002532f7ea2fc24adaf80db430bd

    SHA256

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

    SHA512

    159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

  • 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

    a8aa7f6e5113c6f8768395e69358bbdc

    SHA1

    a5ea8299a25b72cfbd28ecfbec990c930622e23f

    SHA256

    5842a57372e4e942176766897219ebc3b9c7796967fc803459e088e02ff0b3db

    SHA512

    8e5d929abe0b9f9349e229f875241252b915f97d5a44bd8ceb8444e6f7fd4b95223bc5bdd5b98e13365baa445663ecb2ce483a52798e1e35d7e7d741e1403cc1

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2esk3ngt.425.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\qhuztgibgb

    Filesize

    4KB

    MD5

    8b8277c8f03c24d1f290dbe476e961d2

    SHA1

    2e13baf3a4b708277d550dc3dd1e0f99b131f78e

    SHA256

    9af6881f6dbffba028a7a977f4c0a43c764f840332986993ad66de7b816c2f9e

    SHA512

    7367a0236cd0d6cd731caf1ba1f4ea8f851ea1018a9c6b49db6e9d13b2aaba92767774da9169481918e4287021ff5c3a58c3143eaa5e7fe9fa88383208615948

  • C:\Users\Admin\AppData\Local\Temp\tmpDFA2.tmp

    Filesize

    1KB

    MD5

    babb8847a3b3f8f1e08727567981bc64

    SHA1

    0e8913ceb5470ff6a88a783b3ac40f35340e1173

    SHA256

    8dae44a1d8fc98b1610f04d36b92c4514d3df73c1d697d3f3f83cdc1324ab71f

    SHA512

    e789f6bf0d91abed6f32869d4b3a1b463fbdffbd7e004aade718b66cb96c9ad60f528d86f2a454fc505412c538dc0469ac13bf93098bb0b0fca9d672e1d8f553

  • memory/1088-130-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1088-134-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1088-124-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3412-141-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3412-114-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-140-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3412-142-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-144-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-145-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-117-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-116-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-115-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-137-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/3412-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-146-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-147-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3412-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3880-100-0x0000000005D70000-0x0000000005DBC000-memory.dmp

    Filesize

    304KB

  • memory/3880-101-0x0000000075AD0000-0x0000000075B1C000-memory.dmp

    Filesize

    304KB

  • memory/3880-111-0x0000000007260000-0x0000000007271000-memory.dmp

    Filesize

    68KB

  • memory/3880-112-0x00000000072A0000-0x00000000072B4000-memory.dmp

    Filesize

    80KB

  • memory/3880-83-0x0000000005690000-0x00000000059E4000-memory.dmp

    Filesize

    3.3MB

  • memory/4144-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4144-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4144-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4144-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4144-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4332-123-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4332-128-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4332-120-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/4336-8-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-9-0x0000000005FC0000-0x0000000005FD6000-memory.dmp

    Filesize

    88KB

  • memory/4336-4-0x0000000005B90000-0x0000000005B9A000-memory.dmp

    Filesize

    40KB

  • memory/4336-5-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4336-6-0x0000000005FA0000-0x0000000005FBE000-memory.dmp

    Filesize

    120KB

  • memory/4336-7-0x000000007524E000-0x000000007524F000-memory.dmp

    Filesize

    4KB

  • memory/4336-0-0x000000007524E000-0x000000007524F000-memory.dmp

    Filesize

    4KB

  • memory/4336-3-0x0000000005930000-0x00000000059C2000-memory.dmp

    Filesize

    584KB

  • memory/4336-10-0x0000000009480000-0x0000000009540000-memory.dmp

    Filesize

    768KB

  • memory/4336-11-0x000000000C5E0000-0x000000000C67C000-memory.dmp

    Filesize

    624KB

  • memory/4336-1-0x0000000000E60000-0x0000000000F60000-memory.dmp

    Filesize

    1024KB

  • memory/4336-2-0x0000000005FE0000-0x0000000006584000-memory.dmp

    Filesize

    5.6MB

  • memory/4336-48-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4456-129-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4456-127-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4456-122-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4964-72-0x00000000073E0000-0x00000000073F1000-memory.dmp

    Filesize

    68KB

  • memory/4964-56-0x0000000071A30000-0x0000000071A7C000-memory.dmp

    Filesize

    304KB

  • memory/4964-70-0x0000000007250000-0x000000000725A000-memory.dmp

    Filesize

    40KB

  • memory/4964-52-0x0000000005AF0000-0x0000000005E44000-memory.dmp

    Filesize

    3.3MB

  • memory/4964-66-0x00000000063F0000-0x000000000640E000-memory.dmp

    Filesize

    120KB

  • memory/4964-26-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4964-28-0x0000000004F10000-0x0000000004F32000-memory.dmp

    Filesize

    136KB

  • memory/4964-18-0x0000000005020000-0x0000000005648000-memory.dmp

    Filesize

    6.2MB

  • memory/4964-17-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4964-45-0x0000000005800000-0x0000000005866000-memory.dmp

    Filesize

    408KB

  • memory/4964-47-0x00000000059E0000-0x0000000005A46000-memory.dmp

    Filesize

    408KB

  • memory/4964-69-0x00000000071E0000-0x00000000071FA000-memory.dmp

    Filesize

    104KB

  • memory/4964-16-0x00000000025B0000-0x00000000025E6000-memory.dmp

    Filesize

    216KB

  • memory/4964-54-0x0000000006410000-0x000000000645C000-memory.dmp

    Filesize

    304KB

  • memory/4964-22-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4964-53-0x0000000005ED0000-0x0000000005EEE000-memory.dmp

    Filesize

    120KB

  • memory/4964-68-0x0000000007820000-0x0000000007E9A000-memory.dmp

    Filesize

    6.5MB

  • memory/4964-55-0x0000000006480000-0x00000000064B2000-memory.dmp

    Filesize

    200KB

  • memory/4964-79-0x0000000075240000-0x00000000759F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4964-76-0x0000000007500000-0x0000000007508000-memory.dmp

    Filesize

    32KB

  • memory/4964-75-0x0000000007520000-0x000000000753A000-memory.dmp

    Filesize

    104KB

  • memory/4964-74-0x0000000007420000-0x0000000007434000-memory.dmp

    Filesize

    80KB

  • memory/4964-73-0x0000000007410000-0x000000000741E000-memory.dmp

    Filesize

    56KB

  • memory/4964-67-0x0000000007080000-0x0000000007123000-memory.dmp

    Filesize

    652KB

  • memory/4964-71-0x0000000007460000-0x00000000074F6000-memory.dmp

    Filesize

    600KB