Analysis

  • max time kernel
    147s
  • 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
    01-09-2024 04:36

General

  • Target

    C8DA5E64C79548B8447B7544517442DB.exe

  • Size

    1006KB

  • MD5

    c8da5e64c79548b8447b7544517442db

  • SHA1

    e8bc50e2f1fe84fe96523a40d2a0abfd01c72bf7

  • SHA256

    61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f

  • SHA512

    1d3e062b225f87bc1bde79b25b9bdd0499eda092817b83436d1f1760da9a928f9dcf07456485ce472559f7f4b6e5e7ac0a7af1069cbc1983be0d906cac4893e1

  • SSDEEP

    24576:/doEWj+MjS9+ZW8Z6+soNQMOHGRukDq7IR0RJgU:i1jm+w8dCHGRuEq7IRqh

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.89.247.135:2404

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-7IHQDG

  • 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 1 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.

  • 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
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 15 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
    "C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.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:5068
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\unpuLJjbqcRkR.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3548
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\unpuLJjbqcRkR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3023.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:116
    • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
      "C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
        C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\molpeifzlzwjilryukuq"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:3172
      • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
        C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\pqrzfaqbhiowsznclvpkapz"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:4920
      • C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe
        C:\Users\Admin\AppData\Local\Temp\C8DA5E64C79548B8447B7544517442DB.exe /stext "C:\Users\Admin\AppData\Local\Temp\zkwsflbuvqgbufbgufcllutkrv"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3mnbiolu.iu1.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    c0ab2847671ed5375328c5127a02cc72

    SHA1

    dc2bcb51562fb17e5c8787833bc0181d88a5b75e

    SHA256

    e961f466a0638bc99182d0056245e2d8bf1ccc13a189b802aada981f379e2384

    SHA512

    0b8b634d21ac71e02cef86687bf84b6fcecfd24dafab8130f42ce8b4b3f308a2e1b1fa7bf8d37f2eda76efae2b30b8d39f41d808d771562d8545ed144241924f

  • C:\Users\Admin\AppData\Local\Temp\tmp3023.tmp

    Filesize

    1KB

    MD5

    bf648390b05172600b0ac5084b5165c5

    SHA1

    5f618befb0fdcd6f01316e5f032338613bd72fc0

    SHA256

    02f622b3f0837a44033a5ef7ff98d697b426126afad7f7cdf3d75d70596c5001

    SHA512

    134b2de29d60192e7405ef68e662df5bed788a7c2c09c0c6c8286a8a6f2198a5c0668484d214141ed9efff4357f9c530f619e09269835c3e778ebfedbcf05b10

  • memory/336-59-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/336-58-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/336-54-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2336-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-81-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-98-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-76-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2336-79-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2336-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-80-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2336-99-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2336-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3172-50-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3172-52-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3172-49-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3548-16-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-89-0x0000000007EE0000-0x0000000007EFA000-memory.dmp

    Filesize

    104KB

  • memory/3548-20-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-15-0x00000000052C0000-0x00000000052F6000-memory.dmp

    Filesize

    216KB

  • memory/3548-93-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-33-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/3548-42-0x0000000006E00000-0x0000000006E4C000-memory.dmp

    Filesize

    304KB

  • memory/3548-90-0x0000000007EC0000-0x0000000007EC8000-memory.dmp

    Filesize

    32KB

  • memory/3548-21-0x00000000060C0000-0x0000000006126000-memory.dmp

    Filesize

    408KB

  • memory/3548-19-0x00000000057D0000-0x00000000057F2000-memory.dmp

    Filesize

    136KB

  • memory/3548-40-0x0000000006860000-0x000000000687E000-memory.dmp

    Filesize

    120KB

  • memory/3548-88-0x0000000007DE0000-0x0000000007DF4000-memory.dmp

    Filesize

    80KB

  • memory/3548-62-0x0000000006E50000-0x0000000006E82000-memory.dmp

    Filesize

    200KB

  • memory/3548-63-0x000000006F140000-0x000000006F18C000-memory.dmp

    Filesize

    304KB

  • memory/3548-73-0x0000000006DE0000-0x0000000006DFE000-memory.dmp

    Filesize

    120KB

  • memory/3548-74-0x0000000007A60000-0x0000000007B03000-memory.dmp

    Filesize

    652KB

  • memory/3548-22-0x0000000006130000-0x0000000006196000-memory.dmp

    Filesize

    408KB

  • memory/3548-87-0x0000000007DD0000-0x0000000007DDE000-memory.dmp

    Filesize

    56KB

  • memory/3548-29-0x00000000062A0000-0x00000000065F4000-memory.dmp

    Filesize

    3.3MB

  • memory/3548-86-0x0000000007DA0000-0x0000000007DB1000-memory.dmp

    Filesize

    68KB

  • memory/3548-17-0x0000000005A90000-0x00000000060B8000-memory.dmp

    Filesize

    6.2MB

  • memory/3548-82-0x00000000081E0000-0x000000000885A000-memory.dmp

    Filesize

    6.5MB

  • memory/3548-83-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

    Filesize

    104KB

  • memory/3548-84-0x0000000007C10000-0x0000000007C1A000-memory.dmp

    Filesize

    40KB

  • memory/3548-85-0x0000000007E20000-0x0000000007EB6000-memory.dmp

    Filesize

    600KB

  • memory/4920-60-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4920-53-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/4920-51-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5068-8-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/5068-9-0x0000000006070000-0x0000000006130000-memory.dmp

    Filesize

    768KB

  • memory/5068-6-0x0000000007610000-0x0000000007628000-memory.dmp

    Filesize

    96KB

  • memory/5068-41-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/5068-10-0x0000000009B40000-0x0000000009BDC000-memory.dmp

    Filesize

    624KB

  • memory/5068-7-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/5068-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

    Filesize

    4KB

  • memory/5068-5-0x0000000004F10000-0x0000000004F1A000-memory.dmp

    Filesize

    40KB

  • memory/5068-4-0x00000000747A0000-0x0000000074F50000-memory.dmp

    Filesize

    7.7MB

  • memory/5068-3-0x0000000004D60000-0x0000000004DF2000-memory.dmp

    Filesize

    584KB

  • memory/5068-2-0x0000000005270000-0x0000000005814000-memory.dmp

    Filesize

    5.6MB

  • memory/5068-1-0x0000000000270000-0x0000000000372000-memory.dmp

    Filesize

    1.0MB