Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    03-09-2024 01:47

General

  • Target

    61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.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.

  • 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 10 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
    "C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3048
    • 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:2728
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\unpuLJjbqcRkR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2BF0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2744
    • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
      "C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
        C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\irhzejcrvnseaqxsljlflbkgzkynb"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1160
      • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
        C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\slmsfcntjvkjcwtwutyhwoephrqouivw"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2312
      • C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe
        C:\Users\Admin\AppData\Local\Temp\61ebc7c6cd424b7043ee4df8e01489d66259a23979593fa1a5e7fbf54fe4ef4f.exe /stext "C:\Users\Admin\AppData\Local\Temp\vnac"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\tmp2BF0.tmp

    Filesize

    1KB

    MD5

    4f90f43338cedb6496c5ebbc95f9a19d

    SHA1

    2a2d418fdd62d568332362df372def8620df083d

    SHA256

    47bbd08f237c988a05732e9cb4770d9037dd9d1af4cee87821fb04c41ca10276

    SHA512

    8d78870501bd7c56c29cf2b857ad2a6970a4a5ade08b101d6f8c0b7aad98cf69ca353f019b09cf28546d9d3dfc76de02a7021f41841db2d103c033db010efda7

  • memory/1160-43-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1160-46-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1160-48-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1688-52-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1688-51-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1688-53-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/2160-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-35-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-18-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2160-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-59-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2160-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-65-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-62-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2160-63-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2312-45-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2312-47-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2312-49-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3048-1-0x00000000008E0000-0x00000000009E2000-memory.dmp

    Filesize

    1.0MB

  • memory/3048-2-0x0000000074A70000-0x000000007515E000-memory.dmp

    Filesize

    6.9MB

  • memory/3048-3-0x0000000000750000-0x0000000000768000-memory.dmp

    Filesize

    96KB

  • memory/3048-4-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

    Filesize

    4KB

  • memory/3048-5-0x0000000074A70000-0x000000007515E000-memory.dmp

    Filesize

    6.9MB

  • memory/3048-6-0x0000000004EA0000-0x0000000004F60000-memory.dmp

    Filesize

    768KB

  • memory/3048-31-0x0000000074A70000-0x000000007515E000-memory.dmp

    Filesize

    6.9MB

  • memory/3048-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

    Filesize

    4KB