Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2024 03:38

General

  • Target

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe

  • Size

    908KB

  • MD5

    0a91b0a960e1cb925434f0ded97e30b7

  • SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

  • SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

  • SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • SSDEEP

    24576:Mo7x/alQteiW/C+sHTTPrCehcxQv4Zj6CSy:Mc/zhWK+vC4ZIy

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • take_screenshot_option

    false

  • take_screenshot_time

    5

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 2 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 8 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
    "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3812
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4752
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6F3.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3912
    • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
      "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4580
      • 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 use of WriteProcessMemory
        PID:4176
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3088
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp80B4.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1416
        • 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
          • Suspicious use of SetWindowsHookEx
          PID:1976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    1972888cbc515fc7b9cfa6a8db46076b

    SHA1

    dd0f00b4f4b8180795e8fb70545c2bcfc20ed141

    SHA256

    7531deab37d761de4f2d3a41b5fea22a1e0317fed7b15fd86da7058b56086c2c

    SHA512

    8949195a48d9ce35ae40da585ba9249cfdedb5e822518dd57cad2d5ba21da795b41fbbd52213756e65338a80a9c9f2a345803233dffb7850395c9306b314467c

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    908KB

    MD5

    0a91b0a960e1cb925434f0ded97e30b7

    SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

    SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

    SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • 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

    2e75ab7e6a9db24f09c1c88eca63ce5d

    SHA1

    6ece147ec07fb95b991339d6b0da8abb498c98ba

    SHA256

    7a2a294fdb813b478acbbe661d0d1e8c00be03aae0f2815ac1f4eb6a4cd9fd59

    SHA512

    d18b15af51610f6998ce8dd1374459b87b3d67cd071e819cb0c80d700b680591caaf4b5c96eef9594db41833fedf0079d22f076f0dc09bb3fbfd637bf9ac4ea0

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ouferxfu.fz3.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpF6F3.tmp

    Filesize

    1KB

    MD5

    fa6f8cc1a6103101bcced056c8d1d040

    SHA1

    c3dcbe7d5b36f9c4c8cba400a10e4005ff4b27a5

    SHA256

    923fa2d976b2e64691334e49bf37be36321c87acc721a6cd388577419613a9df

    SHA512

    9ecb0eb7de37c4c5014d6cafc2ce28c72c233f6173dd85c195b8874b791c86ad4d2300836080c382e67f4ad2fa1d4ee072d90f5f60c83bb37347b235dc97b7ef

  • memory/1976-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-138-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-96-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-131-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1976-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3088-105-0x0000000005D90000-0x0000000005DDC000-memory.dmp

    Filesize

    304KB

  • memory/3088-106-0x0000000072480000-0x00000000724CC000-memory.dmp

    Filesize

    304KB

  • memory/3088-116-0x0000000006F60000-0x0000000007003000-memory.dmp

    Filesize

    652KB

  • memory/3088-118-0x00000000072E0000-0x00000000072F4000-memory.dmp

    Filesize

    80KB

  • memory/3088-117-0x00000000072A0000-0x00000000072B1000-memory.dmp

    Filesize

    68KB

  • memory/3088-92-0x00000000058D0000-0x0000000005C24000-memory.dmp

    Filesize

    3.3MB

  • memory/3812-9-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-6-0x0000000005100000-0x000000000519C000-memory.dmp

    Filesize

    624KB

  • memory/3812-1-0x0000000000440000-0x000000000052A000-memory.dmp

    Filesize

    936KB

  • memory/3812-2-0x0000000005470000-0x0000000005A14000-memory.dmp

    Filesize

    5.6MB

  • memory/3812-3-0x0000000004DD0000-0x0000000004E62000-memory.dmp

    Filesize

    584KB

  • memory/3812-4-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-5-0x0000000004E80000-0x0000000004E8A000-memory.dmp

    Filesize

    40KB

  • memory/3812-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

    Filesize

    4KB

  • memory/3812-10-0x0000000007990000-0x0000000007A54000-memory.dmp

    Filesize

    784KB

  • memory/3812-26-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/3812-8-0x00000000050E0000-0x00000000050F2000-memory.dmp

    Filesize

    72KB

  • memory/3812-7-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

    Filesize

    4KB

  • memory/4176-79-0x00000000056F0000-0x0000000005702000-memory.dmp

    Filesize

    72KB

  • memory/4580-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4580-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4580-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4580-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4580-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4752-18-0x0000000005A70000-0x0000000006098000-memory.dmp

    Filesize

    6.2MB

  • memory/4752-70-0x0000000007F00000-0x0000000007F96000-memory.dmp

    Filesize

    600KB

  • memory/4752-71-0x0000000007E80000-0x0000000007E91000-memory.dmp

    Filesize

    68KB

  • memory/4752-72-0x0000000007EB0000-0x0000000007EBE000-memory.dmp

    Filesize

    56KB

  • memory/4752-73-0x0000000007EC0000-0x0000000007ED4000-memory.dmp

    Filesize

    80KB

  • memory/4752-74-0x0000000007FC0000-0x0000000007FDA000-memory.dmp

    Filesize

    104KB

  • memory/4752-75-0x0000000007FA0000-0x0000000007FA8000-memory.dmp

    Filesize

    32KB

  • memory/4752-78-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4752-69-0x0000000007CF0000-0x0000000007CFA000-memory.dmp

    Filesize

    40KB

  • memory/4752-67-0x00000000082C0000-0x000000000893A000-memory.dmp

    Filesize

    6.5MB

  • memory/4752-68-0x0000000007C80000-0x0000000007C9A000-memory.dmp

    Filesize

    104KB

  • memory/4752-66-0x0000000007960000-0x0000000007A03000-memory.dmp

    Filesize

    652KB

  • memory/4752-54-0x0000000007920000-0x0000000007952000-memory.dmp

    Filesize

    200KB

  • memory/4752-65-0x0000000006F30000-0x0000000006F4E000-memory.dmp

    Filesize

    120KB

  • memory/4752-55-0x00000000723F0000-0x000000007243C000-memory.dmp

    Filesize

    304KB

  • memory/4752-53-0x00000000069A0000-0x00000000069EC000-memory.dmp

    Filesize

    304KB

  • memory/4752-52-0x0000000006950000-0x000000000696E000-memory.dmp

    Filesize

    120KB

  • memory/4752-28-0x0000000006200000-0x0000000006222000-memory.dmp

    Filesize

    136KB

  • memory/4752-29-0x00000000062A0000-0x0000000006306000-memory.dmp

    Filesize

    408KB

  • memory/4752-50-0x0000000006490000-0x00000000067E4000-memory.dmp

    Filesize

    3.3MB

  • memory/4752-31-0x0000000006310000-0x0000000006376000-memory.dmp

    Filesize

    408KB

  • memory/4752-23-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4752-19-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4752-16-0x0000000074D40000-0x00000000754F0000-memory.dmp

    Filesize

    7.7MB

  • memory/4752-15-0x0000000005380000-0x00000000053B6000-memory.dmp

    Filesize

    216KB