Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 02:59

General

  • Target

    cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.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 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.exe
    "C:\Users\Admin\AppData\Local\Temp\cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.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:3556
    • 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\cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:644
    • 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:1552
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uCItbEGgKu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF405.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3768
    • C:\Users\Admin\AppData\Local\Temp\cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.exe
      "C:\Users\Admin\AppData\Local\Temp\cac29565b48f92e8c7a43b7dcca13294bae02890c26df75ae5e5ee31a464e4f3.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:4704
      • 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:3004
        • 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:2640
          • 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:2932
            • 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:8
            • 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:4700
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uCItbEGgKu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6BA6.tmp"
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:5076
            • 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:3024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    a32eb3296a8b06752c39a4640a3e1517

    SHA1

    8e8fa7dd18e2c74949cbf9de102b9a31077e3e39

    SHA256

    c6acafdf13aaf1f7a2dc637c7f6d281f0f90cc3b1931253c7cdf30cbee7dc0fe

    SHA512

    6e2c0b003b5f0a9a14d60ebb86559cddb8f926fd71258cae5e1b5551bff4fcdfe15087314c983673c0abbebe7a64d0f046d55cbe9f187a97ec78638679f671ac

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

    Filesize

    18KB

    MD5

    ea6e5d6bf2778e08b38cd9b090fb104e

    SHA1

    2090e63bdc8333789b108898671a2a96d023442b

    SHA256

    33a919f7df5c12f99939f2f13e7cfc2aa43a6087ceaecb5e91307ee34a79a1e1

    SHA512

    d37caa7e0d738c2c8e02224a776f9e91399881f1fd7b7d296a642858d453cfe2955ac091ca726411859e937607590cbb65fe987b7812fca1c84f2da63a71db33

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pkttkcy1.vze.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\tmpF405.tmp

    Filesize

    1KB

    MD5

    005f6c6f6235c03f82cbf99d1821515e

    SHA1

    5a2798756cb8cfebc4a04e8a96dfec74066fd47b

    SHA256

    17fa6eb3b1428c2e7fd00a433ffaa0aa7c3672cad85353482910179b3848d932

    SHA512

    cbb73427c18063e95294e462e62f097c5cd4700b9706cebe5356d0b43bbb7282b2a2059f404d60d8476220b6fa8546e879eab71ee4cae5193d52c6450733036f

  • memory/8-154-0x0000000007A30000-0x0000000007A41000-memory.dmp

    Filesize

    68KB

  • memory/8-113-0x0000000005E40000-0x0000000006194000-memory.dmp

    Filesize

    3.3MB

  • memory/8-127-0x0000000006A90000-0x0000000006ADC000-memory.dmp

    Filesize

    304KB

  • memory/8-131-0x0000000072F10000-0x0000000072F5C000-memory.dmp

    Filesize

    304KB

  • memory/8-141-0x0000000007550000-0x00000000075F3000-memory.dmp

    Filesize

    652KB

  • memory/8-155-0x0000000007A70000-0x0000000007A84000-memory.dmp

    Filesize

    80KB

  • memory/644-90-0x0000000007560000-0x0000000007568000-memory.dmp

    Filesize

    32KB

  • memory/644-88-0x0000000007480000-0x0000000007494000-memory.dmp

    Filesize

    80KB

  • memory/644-17-0x0000000005190000-0x00000000057B8000-memory.dmp

    Filesize

    6.2MB

  • memory/644-79-0x0000000007880000-0x0000000007EFA000-memory.dmp

    Filesize

    6.5MB

  • memory/644-23-0x00000000057C0000-0x0000000005826000-memory.dmp

    Filesize

    408KB

  • memory/644-22-0x0000000005110000-0x0000000005176000-memory.dmp

    Filesize

    408KB

  • memory/644-21-0x0000000004F70000-0x0000000004F92000-memory.dmp

    Filesize

    136KB

  • memory/644-16-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/644-33-0x00000000059F0000-0x0000000005D44000-memory.dmp

    Filesize

    3.3MB

  • memory/644-18-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/644-39-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/644-87-0x0000000007470000-0x000000000747E000-memory.dmp

    Filesize

    56KB

  • memory/644-15-0x0000000002600000-0x0000000002636000-memory.dmp

    Filesize

    216KB

  • memory/644-83-0x0000000007440000-0x0000000007451000-memory.dmp

    Filesize

    68KB

  • memory/644-51-0x0000000005EF0000-0x0000000005F0E000-memory.dmp

    Filesize

    120KB

  • memory/644-52-0x0000000006270000-0x00000000062BC000-memory.dmp

    Filesize

    304KB

  • memory/644-93-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/644-82-0x00000000074C0000-0x0000000007556000-memory.dmp

    Filesize

    600KB

  • memory/644-57-0x0000000074CF0000-0x0000000074D3C000-memory.dmp

    Filesize

    304KB

  • memory/644-56-0x0000000006EF0000-0x0000000006F22000-memory.dmp

    Filesize

    200KB

  • memory/1552-68-0x0000000006FF0000-0x000000000700E000-memory.dmp

    Filesize

    120KB

  • memory/1552-89-0x00000000074F0000-0x000000000750A000-memory.dmp

    Filesize

    104KB

  • memory/1552-78-0x0000000007060000-0x0000000007103000-memory.dmp

    Filesize

    652KB

  • memory/1552-80-0x00000000071B0000-0x00000000071CA000-memory.dmp

    Filesize

    104KB

  • memory/1552-81-0x0000000007230000-0x000000000723A000-memory.dmp

    Filesize

    40KB

  • memory/1552-58-0x0000000074CF0000-0x0000000074D3C000-memory.dmp

    Filesize

    304KB

  • memory/1552-97-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1552-20-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/1552-34-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/2932-98-0x0000000004E60000-0x0000000004E72000-memory.dmp

    Filesize

    72KB

  • memory/3024-143-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-129-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-164-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-163-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-162-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-161-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-160-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-105-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-104-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-159-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-103-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-130-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3024-128-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/3556-3-0x0000000005540000-0x00000000055D2000-memory.dmp

    Filesize

    584KB

  • memory/3556-50-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-5-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-4-0x00000000055E0000-0x00000000055EA000-memory.dmp

    Filesize

    40KB

  • memory/3556-10-0x0000000006C70000-0x0000000006D30000-memory.dmp

    Filesize

    768KB

  • memory/3556-0-0x000000007444E000-0x000000007444F000-memory.dmp

    Filesize

    4KB

  • memory/3556-6-0x00000000057E0000-0x000000000587C000-memory.dmp

    Filesize

    624KB

  • memory/3556-1-0x00000000009F0000-0x0000000000B20000-memory.dmp

    Filesize

    1.2MB

  • memory/3556-9-0x0000000074440000-0x0000000074BF0000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-7-0x0000000005630000-0x0000000005642000-memory.dmp

    Filesize

    72KB

  • memory/3556-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

    Filesize

    5.6MB

  • memory/3556-8-0x000000007444E000-0x000000007444F000-memory.dmp

    Filesize

    4KB

  • memory/4700-144-0x0000000072F10000-0x0000000072F5C000-memory.dmp

    Filesize

    304KB

  • memory/4704-35-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4704-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB