Analysis

  • max time kernel
    150s
  • 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
    30/10/2024, 02:24

General

  • Target

    4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe

  • Size

    976KB

  • MD5

    fa638e5dcb26f16f0c960ed10f387782

  • SHA1

    85fefdf55321e998f93ebb52c63c275863e14e21

  • SHA256

    4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769

  • SHA512

    f1ccbd0af2a2bb0935df69f4471260c1056c5cca587294154dc0794f4642b381bbf87de5a757afa711434d17787cfa94e652c60f5a55ac51522626581f790bae

  • SSDEEP

    24576:KVLOy/gpKgVD/MXQPlv2aOxwyi85CDRmueO0kF:K9ObpKkMgPlv2aOyyP5CxX

Malware Config

Extracted

Family

remcos

Botnet

TEEWIRE10/27/24

C2

teebro1800.dynamic-dns.net:2195

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-ISGDIO

  • 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.

  • 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 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
    "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.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:2620
    • 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\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4072
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yVSkoplfDgy.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:456
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yVSkoplfDgy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4486.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3896
    • C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe
      "C:\Users\Admin\AppData\Local\Temp\4aa7d5055d37293efea2b6d715e655f07f3b153f31651278c7576575e7247769.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3700

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          ea3861d123456be5afe913301dd87780

          SHA1

          cbce7f64da5d28995ba059a944abdba6b6e8340e

          SHA256

          99a6e1c1ce1c90566c341d7e60355d32fa86530f73bbe5255a1166a9ef6f4e5a

          SHA512

          ff819d2c34110e209dd7d6483d65d881a2edfc08377537e967dd248e87e8beae6e5e1f1cae0bbcacec6e2f3ecaedb78b19a941f7a1828c5f8eedd054869fcb82

        • 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

          6359fc3908acae9dd249cc37a6f1a1ab

          SHA1

          4bf12331029ce088f941322d34d42fabc446eb5c

          SHA256

          33c140cd1ae5573193f4cf27382999fc73cdabb39590f57ea2d8dfbe00bd0bba

          SHA512

          aaad5d8fdbf6b787d201d508ea34ed17832c54c0df43fd0d18af4827917dc2b794cfe188f03a6a51788bd47d168cda03e79681792cce7d130583f6b3f83e304f

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tqvksg0w.wgk.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp4486.tmp

          Filesize

          1KB

          MD5

          1a7b4983932a9c5ec032066c4ccd9f0b

          SHA1

          e08937cf55db9199aee11e216ee41763cb6d4ed9

          SHA256

          83f7324701d48ca2fe42efd08434ccf201d87b15727bcea956779d424d8677cf

          SHA512

          6d3bb448eff386c7b55ec0f3350110cd09cb9f7e7e6fbb4f5d05a41a1df9c6bbd3aedced4d23f9cd3fa79a0d60f201fde910fdea9ed21317b19d48b592e3b598

        • memory/456-74-0x0000000006E70000-0x0000000006E8E000-memory.dmp

          Filesize

          120KB

        • memory/456-24-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/456-56-0x0000000006910000-0x000000000695C000-memory.dmp

          Filesize

          304KB

        • memory/456-58-0x0000000075BB0000-0x0000000075BFC000-memory.dmp

          Filesize

          304KB

        • memory/456-57-0x0000000006E30000-0x0000000006E62000-memory.dmp

          Filesize

          200KB

        • memory/456-94-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/456-86-0x0000000007E50000-0x0000000007E64000-memory.dmp

          Filesize

          80KB

        • memory/456-85-0x0000000007E40000-0x0000000007E4E000-memory.dmp

          Filesize

          56KB

        • memory/456-84-0x0000000007E10000-0x0000000007E21000-memory.dmp

          Filesize

          68KB

        • memory/456-82-0x0000000007C90000-0x0000000007C9A000-memory.dmp

          Filesize

          40KB

        • memory/456-83-0x0000000007E90000-0x0000000007F26000-memory.dmp

          Filesize

          600KB

        • memory/456-20-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/456-21-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/2620-3-0x0000000005650000-0x00000000056E2000-memory.dmp

          Filesize

          584KB

        • memory/2620-6-0x0000000005950000-0x00000000059EC000-memory.dmp

          Filesize

          624KB

        • memory/2620-0-0x000000007530E000-0x000000007530F000-memory.dmp

          Filesize

          4KB

        • memory/2620-10-0x000000000B770000-0x000000000B82E000-memory.dmp

          Filesize

          760KB

        • memory/2620-5-0x0000000005730000-0x000000000573A000-memory.dmp

          Filesize

          40KB

        • memory/2620-4-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/2620-1-0x0000000000B80000-0x0000000000C7A000-memory.dmp

          Filesize

          1000KB

        • memory/2620-9-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/2620-8-0x000000007530E000-0x000000007530F000-memory.dmp

          Filesize

          4KB

        • memory/2620-2-0x0000000005CE0000-0x0000000006284000-memory.dmp

          Filesize

          5.6MB

        • memory/2620-7-0x0000000005A90000-0x0000000005AAE000-memory.dmp

          Filesize

          120KB

        • memory/2620-53-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/3700-119-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-54-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-38-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-106-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-101-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-100-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-43-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-37-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-36-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-107-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-113-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-114-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-120-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-125-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/3700-127-0x0000000000400000-0x000000000047F000-memory.dmp

          Filesize

          508KB

        • memory/4072-18-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/4072-88-0x00000000071A0000-0x00000000071A8000-memory.dmp

          Filesize

          32KB

        • memory/4072-87-0x00000000071C0000-0x00000000071DA000-memory.dmp

          Filesize

          104KB

        • memory/4072-95-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/4072-81-0x0000000006E80000-0x0000000006E9A000-memory.dmp

          Filesize

          104KB

        • memory/4072-80-0x00000000074C0000-0x0000000007B3A000-memory.dmp

          Filesize

          6.5MB

        • memory/4072-79-0x0000000006D40000-0x0000000006DE3000-memory.dmp

          Filesize

          652KB

        • memory/4072-61-0x0000000075BB0000-0x0000000075BFC000-memory.dmp

          Filesize

          304KB

        • memory/4072-55-0x0000000005B50000-0x0000000005B6E000-memory.dmp

          Filesize

          120KB

        • memory/4072-41-0x00000000055A0000-0x00000000058F4000-memory.dmp

          Filesize

          3.3MB

        • memory/4072-23-0x0000000004BB0000-0x0000000004BD2000-memory.dmp

          Filesize

          136KB

        • memory/4072-26-0x0000000005430000-0x0000000005496000-memory.dmp

          Filesize

          408KB

        • memory/4072-25-0x0000000004CD0000-0x0000000004D36000-memory.dmp

          Filesize

          408KB

        • memory/4072-19-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/4072-16-0x0000000075300000-0x0000000075AB0000-memory.dmp

          Filesize

          7.7MB

        • memory/4072-17-0x0000000004D90000-0x00000000053B8000-memory.dmp

          Filesize

          6.2MB

        • memory/4072-15-0x0000000002230000-0x0000000002266000-memory.dmp

          Filesize

          216KB