Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250502-en
  • resource tags

    arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    12/08/2025, 17:01

General

  • Target
    b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe
  • Size 1.0MB
  • Sample250812-vj22waspx4
  • SHA256 b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Version
  • 7.0.1 Pro

C2
  • 172.94.96.90:5999

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.

  • Executes dropped EXE 3 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 9 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe
    "C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5148
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OJXXJkGJNkvdB.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2916
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OJXXJkGJNkvdB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC6BB.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1468
    • C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe
      "C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4784
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4864
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3064
    • C:\ProgramData\Remcos\remcos.exe
      C:\ProgramData\Remcos\remcos.exe
      2⤵
      • 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:884
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OJXXJkGJNkvdB.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3168
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OJXXJkGJNkvdB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFF9.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5000
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:3948

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        remcos.exe

        • Path C:\ProgramData\Remcos\remcos.exe
        • Size 1.0MB
        • SHA256 b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167
        • MD5 SHA1 SHA512 SSDEEP

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
        • MD5 SHA1 SHA512

        remcos.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\remcos.exe.log
        • Size 1KB
        • SHA256 929bf372a52cdd4a9078e76b856f007273c739706372688c80ac073358f945c3
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 cef18ac4fc3103e4a75f68dc62577e29b4a448fa5b6863c85da5b68fd24e3602
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_p1gx5dfi.zyw.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p1gx5dfi.zyw.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmpC6BB.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC6BB.tmp
        • Size 1KB
        • SHA256 f92f5f9c4b9b9a46e262c108a1a5e222e765d9cf66694823e0d7cce264954327
        • MD5 SHA1 SHA512

        memory/884-51-0x0000000006250000-0x0000000006262000-memory.dmp

        memory/2916-70-0x0000000007310000-0x000000000731E000-memory.dmp

        memory/2916-64-0x0000000006F90000-0x0000000007034000-memory.dmp

        memory/2916-68-0x0000000007360000-0x00000000073F6000-memory.dmp

        memory/2916-67-0x0000000007150000-0x000000000715A000-memory.dmp

        memory/2916-15-0x0000000004C70000-0x0000000004C80000-memory.dmp

        memory/2916-16-0x0000000002580000-0x00000000025B6000-memory.dmp

        memory/2916-18-0x0000000004C70000-0x0000000004C80000-memory.dmp

        memory/2916-54-0x0000000071280000-0x00000000712CC000-memory.dmp

        memory/2916-20-0x00000000052B0000-0x00000000058DA000-memory.dmp

        memory/2916-66-0x00000000070D0000-0x00000000070EA000-memory.dmp

        memory/2916-65-0x0000000007710000-0x0000000007D8A000-memory.dmp

        memory/2916-69-0x00000000072E0000-0x00000000072F1000-memory.dmp

        memory/2916-63-0x0000000006D70000-0x0000000006D8E000-memory.dmp

        memory/2916-26-0x0000000005110000-0x0000000005176000-memory.dmp

        memory/2916-29-0x0000000005230000-0x0000000005296000-memory.dmp

        memory/2916-71-0x0000000007320000-0x0000000007335000-memory.dmp

        memory/2916-72-0x0000000007420000-0x000000000743A000-memory.dmp

        memory/2916-43-0x00000000058E0000-0x0000000005C37000-memory.dmp

        memory/2916-53-0x0000000006D10000-0x0000000006D44000-memory.dmp

        memory/2916-49-0x0000000005D80000-0x0000000005D9E000-memory.dmp

        memory/2916-50-0x0000000005DB0000-0x0000000005DFC000-memory.dmp

        memory/2916-73-0x0000000007410000-0x0000000007418000-memory.dmp

        memory/3168-94-0x0000000005A00000-0x0000000005D57000-memory.dmp

        memory/3168-108-0x00000000075E0000-0x00000000075F5000-memory.dmp

        memory/3168-107-0x00000000075A0000-0x00000000075B1000-memory.dmp

        memory/3168-106-0x0000000007210000-0x00000000072B4000-memory.dmp

        memory/3168-97-0x0000000071730000-0x000000007177C000-memory.dmp

        memory/3168-96-0x00000000063F0000-0x000000000643C000-memory.dmp

        memory/3948-114-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-84-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-118-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-110-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-117-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-116-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-115-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-111-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-113-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-119-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-85-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-112-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3948-82-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4784-22-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4784-24-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4784-19-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4784-21-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4784-47-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4864-52-0x0000000007E50000-0x0000000007E62000-memory.dmp

        memory/5148-8-0x0000000005390000-0x00000000053A0000-memory.dmp

        memory/5148-1-0x0000000005870000-0x0000000005E16000-memory.dmp

        memory/5148-0-0x0000000000770000-0x0000000000874000-memory.dmp

        memory/5148-2-0x00000000053A0000-0x0000000005432000-memory.dmp

        memory/5148-3-0x0000000005390000-0x00000000053A0000-memory.dmp

        memory/5148-4-0x0000000005340000-0x000000000534A000-memory.dmp

        memory/5148-5-0x0000000007FD0000-0x0000000008327000-memory.dmp

        memory/5148-6-0x0000000008420000-0x0000000008442000-memory.dmp

        memory/5148-7-0x00000000083F0000-0x0000000008402000-memory.dmp

        memory/5148-9-0x0000000008750000-0x0000000008816000-memory.dmp

        memory/5148-10-0x000000000AF70000-0x000000000B00C000-memory.dmp