Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250610-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • 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⤵
    • 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:3204
    • 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:4696
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OJXXJkGJNkvdB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFE84.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4392
    • C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe
      "C:\Users\Admin\AppData\Local\Temp\b32da4c31255e2f5dcf961e35e1757aca22f0c39cf80b3fac1d2a8aa734ae167.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4760
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.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:4268
        • 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"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:412
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OJXXJkGJNkvdB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp47C2.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3180
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:1824
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5428
    • C:\ProgramData\Remcos\remcos.exe
      C:\ProgramData\Remcos\remcos.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4840

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        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 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
        • MD5 SHA1 SHA512

        remcos.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\remcos.exe.log
        • Size 1KB
        • SHA256 0f995d44f947f2cdf6b96bfcd5c93fddd90f3d3179f47b211f9090468f64dba5
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 58b5cfb3c57350d7f89f3856d86dda660e3b2e0ade5cff864c8a3d94740fbbe4
        • MD5 SHA1 SHA512 SSDEEP

        __PSScriptPolicyTest_1i5ula5r.hb5.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1i5ula5r.hb5.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmpFE84.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpFE84.tmp
        • Size 1KB
        • SHA256 aaf98186eb972cacd9b5941d7a808be010cc0a0af8b4ff8b6a7fe9d28b915938
        • MD5 SHA1 SHA512

        memory/412-110-0x0000000007170000-0x0000000007184000-memory.dmp

        memory/412-97-0x0000000006150000-0x000000000619C000-memory.dmp

        memory/412-98-0x00000000755F0000-0x000000007563C000-memory.dmp

        memory/412-108-0x0000000006E80000-0x0000000006F23000-memory.dmp

        memory/412-109-0x0000000007120000-0x0000000007131000-memory.dmp

        memory/1824-120-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-112-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-119-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-121-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-94-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-118-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-117-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-116-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-115-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-114-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-93-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-113-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/1824-96-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/3204-9-0x00000000063D0000-0x0000000006496000-memory.dmp

        memory/3204-0-0x0000000000830000-0x0000000000934000-memory.dmp

        memory/3204-10-0x0000000006680000-0x000000000671C000-memory.dmp

        memory/3204-8-0x0000000005210000-0x0000000005220000-memory.dmp

        memory/3204-7-0x0000000008360000-0x0000000008372000-memory.dmp

        memory/3204-6-0x0000000008390000-0x00000000083B2000-memory.dmp

        memory/3204-5-0x0000000007F40000-0x0000000008294000-memory.dmp

        memory/3204-4-0x00000000051F0000-0x00000000051FA000-memory.dmp

        memory/3204-3-0x0000000005210000-0x0000000005220000-memory.dmp

        memory/3204-2-0x0000000005240000-0x00000000052D2000-memory.dmp

        memory/3204-1-0x00000000057F0000-0x0000000005D94000-memory.dmp

        memory/4268-51-0x0000000006310000-0x0000000006322000-memory.dmp

        memory/4696-19-0x0000000005480000-0x0000000005AA8000-memory.dmp

        memory/4696-53-0x00000000073D0000-0x0000000007402000-memory.dmp

        memory/4696-71-0x0000000007900000-0x000000000790E000-memory.dmp

        memory/4696-72-0x0000000007910000-0x0000000007924000-memory.dmp

        memory/4696-73-0x0000000007A10000-0x0000000007A2A000-memory.dmp

        memory/4696-74-0x00000000079F0000-0x00000000079F8000-memory.dmp

        memory/4696-69-0x0000000007950000-0x00000000079E6000-memory.dmp

        memory/4696-68-0x0000000007740000-0x000000000774A000-memory.dmp

        memory/4696-67-0x00000000076E0000-0x00000000076FA000-memory.dmp

        memory/4696-66-0x0000000007D40000-0x00000000083BA000-memory.dmp

        memory/4696-65-0x0000000007410000-0x00000000074B3000-memory.dmp

        memory/4696-64-0x0000000006920000-0x000000000693E000-memory.dmp

        memory/4696-54-0x00000000723C0000-0x000000007240C000-memory.dmp

        memory/4696-70-0x00000000078D0000-0x00000000078E1000-memory.dmp

        memory/4696-16-0x0000000004E10000-0x0000000004E46000-memory.dmp

        memory/4696-50-0x0000000006940000-0x000000000698C000-memory.dmp

        memory/4696-49-0x00000000063A0000-0x00000000063BE000-memory.dmp

        memory/4696-33-0x0000000005CC0000-0x0000000005D26000-memory.dmp

        memory/4696-15-0x0000000004E00000-0x0000000004E10000-memory.dmp

        memory/4696-34-0x0000000005D30000-0x0000000005D96000-memory.dmp

        memory/4696-17-0x0000000004E00000-0x0000000004E10000-memory.dmp

        memory/4760-25-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4760-21-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4760-20-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4760-23-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4760-43-0x0000000000400000-0x0000000000483000-memory.dmp

        memory/4840-52-0x00000000083B0000-0x00000000083C2000-memory.dmp