Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 07:12

General

  • Target

    BankFundTransfer-589237.scr.exe

  • Size

    1.2MB

  • MD5

    552044ce92b78bf4b68d242c2c380afe

  • SHA1

    2ef4efa20f4fd0d05d8f49ccb22c9afeada93a62

  • SHA256

    cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3

  • SHA512

    4dc5ef0fb4b80a81015f4507422a67309074ea01787c9ed0d18c850a1d98ea1e3a444993a1d08428331e2ff044390c873d20c31ffbae049e325a82b64d5a3967

  • SSDEEP

    24576:6YdgfvzmIzxWOwxzCJYC3PPoKb0Eci5ihjJVxw9bYOd+8:qzmmWXRCaePPjb0Eci5ih7xw9bYI

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

212.162.149.226:9285

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    AppUpdate

  • 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-VCJ8ZS

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    AppUpdate

  • 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 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 4 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 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BankFundTransfer-589237.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\BankFundTransfer-589237.scr.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:1684
    • 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\BankFundTransfer-589237.scr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4092
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uCItbEGgKu.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3260
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uCItbEGgKu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE3A9.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1172
    • C:\Users\Admin\AppData\Local\Temp\BankFundTransfer-589237.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\BankFundTransfer-589237.scr.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3972
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\AppUpdate\remcos.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2824
          • C:\ProgramData\AppUpdate\remcos.exe
            C:\ProgramData\AppUpdate\remcos.exe
            5⤵
            • 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:2204
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4832
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\uCItbEGgKu.exe"
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:636
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uCItbEGgKu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4FB1.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:5060
            • C:\ProgramData\AppUpdate\remcos.exe
              "C:\ProgramData\AppUpdate\remcos.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              PID:1404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\AppUpdate\remcos.exe

    Filesize

    1.2MB

    MD5

    552044ce92b78bf4b68d242c2c380afe

    SHA1

    2ef4efa20f4fd0d05d8f49ccb22c9afeada93a62

    SHA256

    cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3

    SHA512

    4dc5ef0fb4b80a81015f4507422a67309074ea01787c9ed0d18c850a1d98ea1e3a444993a1d08428331e2ff044390c873d20c31ffbae049e325a82b64d5a3967

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    c3de5ebee6a6c6eb09d1b7bd86b4a173

    SHA1

    e96074d3260c56f1f999a1bf58ebc6f12aca9cac

    SHA256

    c7e8a8cc90a42b8cad1096e5b2e5c2bdfc8df87e0aca37941686a2b0d76af785

    SHA512

    a786cc39e780f872a42ec84eb052b99e28cefffd8ef028908c3044bedf4008f159247b380f5db70f588ce38ece2cdddb600c3584ac0b858ebdc5033145c89dea

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

    Filesize

    18KB

    MD5

    5a2774e17dcdca79d7061ac4ae2e3981

    SHA1

    e8e564ca11604950af617891ed29e57bc96fda53

    SHA256

    0033e37181119026e1ab93a2a24d900b9fbdc2d456da02cbc8f1b33d756218c3

    SHA512

    1b20acd83f358778a8185c8dc09a9c61f62ce3ef70b47924059e0593a274da71cb5d1087d5f02c78b8bae211b8d951c8c68e1c3733192fac246bdfa54c5561aa

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vvv54zvu.tsz.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\install.vbs

    Filesize

    392B

    MD5

    046708368578d720d91fb9ceecec742e

    SHA1

    1dc732f67f48a1d5694f4cf14a8d279dbd1d6ee6

    SHA256

    04f4edc28e97a16f93cf7acac864aba17cc467282550ae61baac719262be6f5e

    SHA512

    9106f645ee74c9e061fcb396a00d706512d41054a356125f26a10d42390d8f0d3ea3dd785393bf5de358b62464ec3c0f7d2e27411e87bb408581f820c427e7f0

  • C:\Users\Admin\AppData\Local\Temp\tmpE3A9.tmp

    Filesize

    1KB

    MD5

    08416df40d92c3844c08f106752a6f7f

    SHA1

    769e623d6a80c2b3d28582b5b521278750dea200

    SHA256

    ccec6f40b18896439604620b576e1701e7a982c0407794f71f4ceb7924b7df6b

    SHA512

    a90eb12b02d3b3cdc13c0c70a944f0cbc6fc26c15642ef8026139c1467f9da39f339043f3d508715dcbe24a3de81d7e7eecd110e0996966b1a7a7e0222305340

  • memory/636-129-0x0000000073330000-0x000000007337C000-memory.dmp

    Filesize

    304KB

  • memory/636-153-0x0000000007480000-0x0000000007491000-memory.dmp

    Filesize

    68KB

  • memory/636-154-0x00000000074C0000-0x00000000074D4000-memory.dmp

    Filesize

    80KB

  • memory/636-139-0x00000000071A0000-0x0000000007243000-memory.dmp

    Filesize

    652KB

  • memory/1404-165-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-164-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-163-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-162-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-116-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-161-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-160-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-150-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-151-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-152-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1404-114-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1684-4-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1684-0-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/1684-1-0x0000000000B00000-0x0000000000C30000-memory.dmp

    Filesize

    1.2MB

  • memory/1684-9-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1684-50-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/1684-8-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/1684-10-0x0000000005B70000-0x0000000005C30000-memory.dmp

    Filesize

    768KB

  • memory/1684-7-0x0000000005660000-0x0000000005672000-memory.dmp

    Filesize

    72KB

  • memory/1684-6-0x0000000005950000-0x00000000059EC000-memory.dmp

    Filesize

    624KB

  • memory/1684-2-0x0000000005C30000-0x00000000061D4000-memory.dmp

    Filesize

    5.6MB

  • memory/1684-3-0x0000000005680000-0x0000000005712000-memory.dmp

    Filesize

    584KB

  • memory/1684-5-0x0000000005630000-0x000000000563A000-memory.dmp

    Filesize

    40KB

  • memory/2204-98-0x0000000005AA0000-0x0000000005AB2000-memory.dmp

    Filesize

    72KB

  • memory/3260-56-0x0000000006600000-0x000000000664C000-memory.dmp

    Filesize

    304KB

  • memory/3260-81-0x0000000007390000-0x00000000073AA000-memory.dmp

    Filesize

    104KB

  • memory/3260-82-0x0000000007400000-0x000000000740A000-memory.dmp

    Filesize

    40KB

  • memory/3260-83-0x0000000007600000-0x0000000007696000-memory.dmp

    Filesize

    600KB

  • memory/3260-59-0x0000000070090000-0x00000000700DC000-memory.dmp

    Filesize

    304KB

  • memory/3260-79-0x00000000070C0000-0x0000000007163000-memory.dmp

    Filesize

    652KB

  • memory/3260-23-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3260-55-0x0000000006060000-0x000000000607E000-memory.dmp

    Filesize

    120KB

  • memory/3260-90-0x00000000076C0000-0x00000000076DA000-memory.dmp

    Filesize

    104KB

  • memory/3260-91-0x00000000076A0000-0x00000000076A8000-memory.dmp

    Filesize

    32KB

  • memory/3260-24-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3260-96-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/3260-49-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4092-21-0x0000000005F40000-0x0000000005FA6000-memory.dmp

    Filesize

    408KB

  • memory/4092-20-0x0000000005790000-0x00000000057B2000-memory.dmp

    Filesize

    136KB

  • memory/4092-89-0x0000000007CB0000-0x0000000007CC4000-memory.dmp

    Filesize

    80KB

  • memory/4092-15-0x0000000002E40000-0x0000000002E76000-memory.dmp

    Filesize

    216KB

  • memory/4092-88-0x0000000007CA0000-0x0000000007CAE000-memory.dmp

    Filesize

    56KB

  • memory/4092-87-0x0000000007C70000-0x0000000007C81000-memory.dmp

    Filesize

    68KB

  • memory/4092-16-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4092-80-0x00000000080B0000-0x000000000872A000-memory.dmp

    Filesize

    6.5MB

  • memory/4092-17-0x0000000005910000-0x0000000005F38000-memory.dmp

    Filesize

    6.2MB

  • memory/4092-58-0x0000000070090000-0x00000000700DC000-memory.dmp

    Filesize

    304KB

  • memory/4092-57-0x00000000076D0000-0x0000000007702000-memory.dmp

    Filesize

    200KB

  • memory/4092-77-0x00000000076B0000-0x00000000076CE000-memory.dmp

    Filesize

    120KB

  • memory/4092-51-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4092-19-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4092-29-0x0000000006190000-0x00000000064E4000-memory.dmp

    Filesize

    3.3MB

  • memory/4092-22-0x0000000006120000-0x0000000006186000-memory.dmp

    Filesize

    408KB

  • memory/4092-97-0x0000000074860000-0x0000000075010000-memory.dmp

    Filesize

    7.7MB

  • memory/4752-25-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4752-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4832-140-0x0000000073330000-0x000000007337C000-memory.dmp

    Filesize

    304KB

  • memory/4832-128-0x0000000005DB0000-0x0000000005DFC000-memory.dmp

    Filesize

    304KB

  • memory/4832-111-0x0000000005730000-0x0000000005A84000-memory.dmp

    Filesize

    3.3MB