Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 15:55

General

  • Target
    Drv_ceo_12.8.1_x64.exe
  • Size 14.6MB
  • Sample260808-tcykfatycs
  • SHA256 0d4755125431b2df6a5232950b6c475bb6ae459a35503d64a6bc2c8075f5e2e5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Discovers running processes 1 TTPs 1 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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.

  • Modifies data under HKEY_USERS 46 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Drv_ceo_12.8.1_x64.exe
    "C:\Users\Admin\AppData\Local\Temp\Drv_ceo_12.8.1_x64.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C tasklist | findstr /I /C:"360tray.exe" /C:"HipsTray.exe"
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3328
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Discovers running processes
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:5924
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I /C:"360tray.exe" /C:"HipsTray.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4884
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C start "" /B cmd.exe /C "powershell Add-MpPreference -ExclusionPath C:\,D:\,F:\"
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:688
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C "powershell Add-MpPreference -ExclusionPath C:\,D:\,F:\"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2712
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell Add-MpPreference -ExclusionPath C:\,D:\,F:\
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1112
    • C:\Users\Admin\AppData\Roaming\comain_ev2f79\ev2f79.exe
      "C:\Users\Admin\AppData\Roaming\comain_ev2f79\ev2f79.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      PID:1580
    • C:\Users\Admin\AppData\Roaming\comain_ev2c34\ev2c34.exe
      "C:\Users\Admin\AppData\Roaming\comain_ev2c34\ev2c34.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:560
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1340
  • C:\Windows\System32\UserAccountBroker.exe
    C:\Windows\System32\UserAccountBroker.exe
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    PID:760
  • C:\Windows\System32\edpnotify.exe
    C:\Windows\System32\edpnotify.exe
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    PID:4732

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsx3BC9.tmp\System.dll
        • Size 11KB
        • SHA256 a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsx3BC9.tmp\nsExec.dll
        • Size 6KB
        • SHA256 b22c8f676dec58be8d25fbad1a37835ffc4029f29aaf79f4dc0337ca73a38782
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ap.asin

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\ap.asin
        • Size 260B
        • SHA256 156fb419996462ba4024e6c60fa36c4e240b3d6bf68a31a99cc636083ee17635
        • MD5 SHA1 SHA512 TLSH

        bnymir.ou

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\bnymir.ou
        • Size 532KB
        • SHA256 80ea61aa50e8fc47f3db2b37eca7350b21a3aa8f957c7cf9490bb7c3757379e1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        bteuns.pt

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\bteuns.pt
        • Size 540KB
        • SHA256 29fbb5abc68c1c3f912500670f2ceb41b4ba3a9bf6af9c9a681aedfa7eb8e279
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cmrsk.ce

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\cmrsk.ce
        • Size 192KB
        • SHA256 2f592516e42bdf4b48eb92eced833db8c43681d00874257ee6e53395104d0142
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ev2c34.exe.nhpart_2d004296fcc8

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\ev2c34.exe.nhpart_2d004296fcc8
        • Size 1.6MB
        • SHA256 d80c12abd623a0614e09163687fa73cb327d756749c1d18563cd1e1dd7d7b31d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        fhkan.oi

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2c34\fhkan.oi
        • Size 183KB
        • SHA256 d50b4753fd94a5d80e3931356fb483ceee749e7421e61dd5aa698805a2d6ff3b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dxyvnb.ti

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2f79\dxyvnb.ti
        • Size 45KB
        • SHA256 700f323400cebc41c77236144b8ed387acb93bfbef64a40af4faf12df8ce2cff
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ev2f79.exe

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2f79\ev2f79.exe
        • Size 1.6MB
        • SHA256 58b5185a7c1c4b22846cc19a2b67ffe62f1dc3e72c0c6d9f1026579a44ad6e97
        • MD5 SHA1 SHA512 SSDEEP TLSH

        otrm.oi

        • Path C:\Users\Admin\AppData\Roaming\comain_ev2f79\otrm.oi
        • Size 187KB
        • SHA256 cad3a6119836f449186774952891d78502213c894904eb3b2892fd3d0545a191
        • MD5 SHA1 SHA512 SSDEEP TLSH

        __PSScriptPolicyTest_0rhlv0td.00f.ps1

        • Path C:\Windows\SystemTemp\__PSScriptPolicyTest_0rhlv0td.00f.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        memory/560-131-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/560-314-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/560-123-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/560-128-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/560-129-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/560-130-0x0000000010000000-0x0000000010032000-memory.dmp

        memory/760-286-0x0000000180000000-0x000000018008A000-memory.dmp

        memory/760-321-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-317-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-315-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-320-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-318-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-316-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/760-319-0x0000024B9FB50000-0x0000024B9FC20000-memory.dmp

        memory/1112-17-0x0000000005B20000-0x0000000005E7B000-memory.dmp

        memory/1112-24-0x0000000006420000-0x0000000006440000-memory.dmp

        memory/1112-19-0x0000000005EE0000-0x0000000005F2C000-memory.dmp

        memory/1112-10-0x00000000052F0000-0x000000000593A000-memory.dmp

        memory/1112-20-0x0000000007010000-0x0000000007046000-memory.dmp

        memory/1112-31-0x0000000073700000-0x0000000073EBC000-memory.dmp

        memory/1112-16-0x0000000005280000-0x00000000052E6000-memory.dmp

        memory/1112-29-0x0000000007410000-0x00000000074A6000-memory.dmp

        memory/1112-7-0x0000000073712000-0x0000000073713000-memory.dmp

        memory/1112-18-0x0000000005AB0000-0x0000000005ACE000-memory.dmp

        memory/1112-28-0x0000000007210000-0x000000000721A000-memory.dmp

        memory/1112-8-0x00000000025E0000-0x0000000002616000-memory.dmp

        memory/1112-13-0x0000000005210000-0x0000000005276000-memory.dmp

        memory/1112-12-0x0000000005170000-0x0000000005192000-memory.dmp

        memory/1112-11-0x0000000073700000-0x0000000073EBC000-memory.dmp

        memory/1112-27-0x00000000071A0000-0x00000000071BA000-memory.dmp

        memory/1112-9-0x0000000073700000-0x0000000073EBC000-memory.dmp

        memory/1112-26-0x00000000077E0000-0x0000000007E5C000-memory.dmp

        memory/1112-25-0x0000000007060000-0x0000000007103000-memory.dmp

        memory/1112-21-0x00000000700A0000-0x00000000700EC000-memory.dmp

        memory/1340-85-0x000001B96E130000-0x000001B96E1E2000-memory.dmp

        memory/1340-87-0x000001B96D5D0000-0x000001B96D5EE000-memory.dmp

        memory/1340-86-0x000001B96D5A0000-0x000001B96D5AA000-memory.dmp

        memory/1340-84-0x000001B96D580000-0x000001B96D59E000-memory.dmp

        memory/1340-81-0x000001B96D370000-0x000001B96D392000-memory.dmp

        memory/1340-78-0x000001B96D260000-0x000001B96D26C000-memory.dmp

        memory/1580-77-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/1580-74-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/1580-65-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/1580-71-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/1580-73-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/1580-72-0x0000000010000000-0x0000000010033000-memory.dmp

        memory/4732-300-0x0000000180000000-0x000000018008E000-memory.dmp