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Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/09/2024, 09:07

General

  • Target

    8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe

  • Size

    883KB

  • MD5

    571902de75705d1aeaa32be01459dc65

  • SHA1

    4ccf3c9a339146008c1d8466857e13d3c7752a05

  • SHA256

    8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5

  • SHA512

    966381cdeaf8213fefdca876052a59dcda9e2436cfc50b4516eca936ebb9e75b9421058969526fa0b46d06067a43398a51c8e7201fa72d39faa0153c4328a9d7

  • SSDEEP

    24576:kBGzjcJ6NacNEyNOU+6cNuuH2SNcjmYY4Swv:kE86N1l5x8uuWSpYXS2

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • 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 1 IoCs

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

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
    "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.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:2664
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4396
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\efsOOkOP.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:808
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efsOOkOP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3368
    • C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe
      "C:\Users\Admin\AppData\Local\Temp\8f2c4543e4bc9194d1c1a9bc946a75d49162b0eee2715df4ba626980892107b5.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:924

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    e438304439e89bb754a30315f49a7e20

    SHA1

    6bc54a770d167b7878736458ccd0c9b8fd20f4c6

    SHA256

    d26186624b78ca3f5f24a8e1cd828438a5e8c1a7c22c98027dcecd1c04497c58

    SHA512

    79f985dec5c08354c4af32bd27d8011041edecb22b648a1d208795b5a09240c653510aba933ecec32ae508e2fd8c3b5b2c442e244624479b6d11feab6483819b

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fphlf0vj.1jh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpD438.tmp

    Filesize

    1KB

    MD5

    505b133ed29fb8ee75068f663b960c0c

    SHA1

    df58a2195768ef5c54d0dc0737f7b0a0263d3746

    SHA256

    d46df903f013edc94661dddc3c37085cc0d4810f086c370f6229147ad3e5c9e7

    SHA512

    53b015944d67673781de0e532b5116a47375c2d72fbbc272588c71a503a31f4e22ba13cad74d3ea0738baad4acd34b466493e1170dfc6fbe906e65aecdc0cd5b

  • memory/808-53-0x0000000006720000-0x000000000676C000-memory.dmp

    Filesize

    304KB

  • memory/808-55-0x00000000755C0000-0x000000007560C000-memory.dmp

    Filesize

    304KB

  • memory/808-92-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/808-85-0x0000000007CB0000-0x0000000007CCA000-memory.dmp

    Filesize

    104KB

  • memory/808-84-0x0000000007BB0000-0x0000000007BC4000-memory.dmp

    Filesize

    80KB

  • memory/808-82-0x0000000007B70000-0x0000000007B81000-memory.dmp

    Filesize

    68KB

  • memory/808-54-0x0000000007620000-0x0000000007652000-memory.dmp

    Filesize

    200KB

  • memory/808-79-0x00000000079E0000-0x00000000079EA000-memory.dmp

    Filesize

    40KB

  • memory/808-65-0x0000000006C10000-0x0000000006C2E000-memory.dmp

    Filesize

    120KB

  • memory/808-16-0x0000000005720000-0x0000000005D48000-memory.dmp

    Filesize

    6.2MB

  • memory/808-18-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/808-76-0x0000000007860000-0x0000000007903000-memory.dmp

    Filesize

    652KB

  • memory/808-81-0x0000000007BF0000-0x0000000007C86000-memory.dmp

    Filesize

    600KB

  • memory/808-22-0x0000000005EC0000-0x0000000005F26000-memory.dmp

    Filesize

    408KB

  • memory/808-29-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/808-52-0x0000000006640000-0x000000000665E000-memory.dmp

    Filesize

    120KB

  • memory/808-23-0x0000000005F30000-0x0000000005F96000-memory.dmp

    Filesize

    408KB

  • memory/808-21-0x0000000005690000-0x00000000056B2000-memory.dmp

    Filesize

    136KB

  • memory/808-35-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/808-34-0x0000000006260000-0x00000000065B4000-memory.dmp

    Filesize

    3.3MB

  • memory/924-80-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-47-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-49-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-50-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-105-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-104-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-103-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-46-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-102-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-101-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-100-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-97-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-96-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-95-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/924-94-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/2664-4-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2664-1-0x0000000000BF0000-0x0000000000CD4000-memory.dmp

    Filesize

    912KB

  • memory/2664-51-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2664-9-0x00000000071A0000-0x000000000725E000-memory.dmp

    Filesize

    760KB

  • memory/2664-5-0x0000000005750000-0x000000000575A000-memory.dmp

    Filesize

    40KB

  • memory/2664-8-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/2664-7-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

    Filesize

    4KB

  • memory/2664-3-0x0000000005690000-0x0000000005722000-memory.dmp

    Filesize

    584KB

  • memory/2664-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

    Filesize

    5.6MB

  • memory/2664-6-0x0000000006D20000-0x0000000006D32000-memory.dmp

    Filesize

    72KB

  • memory/2664-0-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

    Filesize

    4KB

  • memory/2664-10-0x0000000009870000-0x000000000990C000-memory.dmp

    Filesize

    624KB

  • memory/4396-77-0x0000000007A10000-0x000000000808A000-memory.dmp

    Filesize

    6.5MB

  • memory/4396-78-0x00000000073D0000-0x00000000073EA000-memory.dmp

    Filesize

    104KB

  • memory/4396-17-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4396-19-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4396-66-0x00000000755C0000-0x000000007560C000-memory.dmp

    Filesize

    304KB

  • memory/4396-15-0x0000000004B00000-0x0000000004B36000-memory.dmp

    Filesize

    216KB

  • memory/4396-83-0x0000000007600000-0x000000000760E000-memory.dmp

    Filesize

    56KB

  • memory/4396-93-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4396-86-0x00000000076F0000-0x00000000076F8000-memory.dmp

    Filesize

    32KB

  • memory/4396-36-0x0000000074D10000-0x00000000754C0000-memory.dmp

    Filesize

    7.7MB