Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-07-2024 03:10

General

  • Target

    rfq1960.exe

  • Size

    904KB

  • MD5

    38b63c968b2733cef310a6df2dcfa478

  • SHA1

    bbbb4dcf4ecc6364af54480929d430da1c460a13

  • SHA256

    2768689f6c4a60b7fe18d6c87fdecd8a7f8dceefa298a5851c4a7c6909f3a92d

  • SHA512

    ab9486482bfae4c5a86a5d3dbe9aa47b003d9d74965b5fbd24f72a30ee1bd5a34a75cbcecff98aa3852e7c2019a582f8633bc1c8d762a65ef9084fb00791f3da

  • SSDEEP

    24576:CRv6SSp2ReQ/tOsbwHsIS7NjkDpGrWbv8MXK:CJZeQcsUHPSZjkDpcWb3

Malware Config

Extracted

Family

remcos

Botnet

5764576

C2

172.93.218.178:45667

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

    765-XJJE0J

  • 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 1 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 4 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rfq1960.exe
    "C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TlykqEvmBV.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2196
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TlykqEvmBV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA46E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1108
    • C:\Users\Admin\AppData\Local\Temp\rfq1960.exe
      "C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3tm50z5r.xbg.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA46E.tmp

    Filesize

    1KB

    MD5

    2f0b69a087fb9eddda2959005d5f78ca

    SHA1

    6ec32244c1bc1f19a502c1244a0cb607048c799b

    SHA256

    dac457537a67a6361727eb4ef34635ac94b320d754b7e215e2fc31bc1619a119

    SHA512

    54e02b5da81ea45c1ad3b014d8e485d9cdd3a60febfa8513fd822dc5830b58f1f4149a699dbe12728357def395184ae6f7a1df86bdab4bfb819a54361a8a5cf3

  • memory/452-6-0x00000000051C0000-0x00000000051DA000-memory.dmp

    Filesize

    104KB

  • memory/452-3-0x0000000004C30000-0x0000000004CC2000-memory.dmp

    Filesize

    584KB

  • memory/452-4-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/452-5-0x0000000004C10000-0x0000000004C1A000-memory.dmp

    Filesize

    40KB

  • memory/452-2-0x00000000051E0000-0x0000000005784000-memory.dmp

    Filesize

    5.6MB

  • memory/452-7-0x0000000005D90000-0x0000000005D9E000-memory.dmp

    Filesize

    56KB

  • memory/452-8-0x0000000005DF0000-0x0000000005EAE000-memory.dmp

    Filesize

    760KB

  • memory/452-9-0x0000000006000000-0x000000000609C000-memory.dmp

    Filesize

    624KB

  • memory/452-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

    Filesize

    4KB

  • memory/452-40-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/452-1-0x0000000000120000-0x0000000000208000-memory.dmp

    Filesize

    928KB

  • memory/2196-42-0x0000000006260000-0x00000000062AC000-memory.dmp

    Filesize

    304KB

  • memory/2196-57-0x0000000007560000-0x000000000757A000-memory.dmp

    Filesize

    104KB

  • memory/2196-19-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/2196-20-0x0000000005270000-0x0000000005292000-memory.dmp

    Filesize

    136KB

  • memory/2196-67-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/2196-64-0x0000000007880000-0x0000000007888000-memory.dmp

    Filesize

    32KB

  • memory/2196-17-0x0000000005450000-0x0000000005A78000-memory.dmp

    Filesize

    6.2MB

  • memory/2196-63-0x00000000078A0000-0x00000000078BA000-memory.dmp

    Filesize

    104KB

  • memory/2196-15-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/2196-62-0x00000000077A0000-0x00000000077B4000-memory.dmp

    Filesize

    80KB

  • memory/2196-61-0x0000000007790000-0x000000000779E000-memory.dmp

    Filesize

    56KB

  • memory/2196-39-0x0000000005D60000-0x00000000060B4000-memory.dmp

    Filesize

    3.3MB

  • memory/2196-25-0x0000000005BF0000-0x0000000005C56000-memory.dmp

    Filesize

    408KB

  • memory/2196-23-0x0000000005390000-0x00000000053F6000-memory.dmp

    Filesize

    408KB

  • memory/2196-60-0x0000000007760000-0x0000000007771000-memory.dmp

    Filesize

    68KB

  • memory/2196-41-0x0000000006210000-0x000000000622E000-memory.dmp

    Filesize

    120KB

  • memory/2196-14-0x0000000002910000-0x0000000002946000-memory.dmp

    Filesize

    216KB

  • memory/2196-44-0x0000000075950000-0x000000007599C000-memory.dmp

    Filesize

    304KB

  • memory/2196-54-0x0000000006840000-0x000000000685E000-memory.dmp

    Filesize

    120KB

  • memory/2196-55-0x0000000007220000-0x00000000072C3000-memory.dmp

    Filesize

    652KB

  • memory/2196-43-0x0000000006800000-0x0000000006832000-memory.dmp

    Filesize

    200KB

  • memory/2196-16-0x00000000750C0000-0x0000000075870000-memory.dmp

    Filesize

    7.7MB

  • memory/2196-56-0x0000000007BA0000-0x000000000821A000-memory.dmp

    Filesize

    6.5MB

  • memory/2196-58-0x00000000075D0000-0x00000000075DA000-memory.dmp

    Filesize

    40KB

  • memory/2196-59-0x00000000077E0000-0x0000000007876000-memory.dmp

    Filesize

    600KB

  • memory/4652-70-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-38-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-71-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-72-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-26-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-22-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-68-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-69-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-79-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-36-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-37-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-73-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-74-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-76-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-77-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-78-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4652-21-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB