Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 21:46

General

  • Target

    53893a8c0f205e7f0c96f045a6f7bce683bde52b4a692fc64075f863cd8f3c3d.exe

  • Size

    1.1MB

  • MD5

    77e3e093c61c0e2ca41f47a470e74f31

  • SHA1

    c1de740d11d19016caa74c6667b63d85bb765a9f

  • SHA256

    53893a8c0f205e7f0c96f045a6f7bce683bde52b4a692fc64075f863cd8f3c3d

  • SHA512

    fe88fc3a873b33e0f3838f5d9067e1166d8b735e2a596f5a166be47bfc6b9fdf002faf459bc088ea11c35c826aff6c0eacc0e560894ee08451d9828a38b99a8f

  • SSDEEP

    24576:XIGqgFOl3M0XmHxT+3A2U8REKt6csqfa+d+Dih:FFOSDt+QuWKvswjX

Malware Config

Extracted

Family

remcos

Botnet

AQUAFINA

C2

december2n.duckdns.org:6241

december2nd.ddns.net:6241

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-5TYRFW

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 26 IoCs
  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53893a8c0f205e7f0c96f045a6f7bce683bde52b4a692fc64075f863cd8f3c3d.exe
    "C:\Users\Admin\AppData\Local\Temp\53893a8c0f205e7f0c96f045a6f7bce683bde52b4a692fc64075f863cd8f3c3d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1112
    • 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\53893a8c0f205e7f0c96f045a6f7bce683bde52b4a692fc64075f863cd8f3c3d.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4100
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UXatlomLO.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4708
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UXatlomLO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB2B6.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4344
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
        PID:1736

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • 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

      b76c89c5e6c116d5453bfcfe23b077e2

      SHA1

      da11bd18fc0e390a0190f8379977227c84cc35e4

      SHA256

      aff4f9bafa9c43346abbfbb5f1aab81aa7eafe335dd64018fb8ab400d2737ff2

      SHA512

      4b943d041a3708764ab2c4a5f50ff0bd959d085ee24c922088695d9b041d10c46598d100132f2c52424a3bf826e5b6358ace2a9f924f1952a29dea36ac9797f8

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f31ugkj1.p4q.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpB2B6.tmp

      Filesize

      1KB

      MD5

      5f9326ae46244241e150c5ba51875557

      SHA1

      3bfede1654a59b66fd569dc40653f6317b0f42e5

      SHA256

      543ac0f1db5b0922d4cdc6716c26905121f6629ee56863b0a2a85d89575c63c9

      SHA512

      45a23dc6754539f1cf1c42d976539fe32bf2f1f6da7039a95ae1102cd8ce84f15445117ee1eeb5676fd368ade9ee88b36a401c138b359d60d36a1b961e7ba480

    • memory/1112-8-0x0000000006DB0000-0x0000000006DC0000-memory.dmp

      Filesize

      64KB

    • memory/1112-11-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

      Filesize

      4KB

    • memory/1112-6-0x0000000005CC0000-0x0000000005CCA000-memory.dmp

      Filesize

      40KB

    • memory/1112-7-0x0000000008890000-0x00000000088AA000-memory.dmp

      Filesize

      104KB

    • memory/1112-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

      Filesize

      4KB

    • memory/1112-9-0x0000000008AD0000-0x0000000008B90000-memory.dmp

      Filesize

      768KB

    • memory/1112-10-0x000000000B2D0000-0x000000000B36C000-memory.dmp

      Filesize

      624KB

    • memory/1112-5-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/1112-12-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/1112-4-0x0000000005930000-0x0000000005C84000-memory.dmp

      Filesize

      3.3MB

    • memory/1112-50-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/1112-3-0x0000000005720000-0x00000000057B2000-memory.dmp

      Filesize

      584KB

    • memory/1112-2-0x0000000005CD0000-0x0000000006274000-memory.dmp

      Filesize

      5.6MB

    • memory/1112-1-0x0000000000B90000-0x0000000000CB6000-memory.dmp

      Filesize

      1.1MB

    • memory/1736-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-110-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-96-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-114-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-102-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-112-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-111-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-49-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-51-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-115-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-55-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-56-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-108-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-104-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1736-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4100-18-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4100-83-0x00000000075D0000-0x0000000007666000-memory.dmp

      Filesize

      600KB

    • memory/4100-86-0x0000000007590000-0x00000000075A4000-memory.dmp

      Filesize

      80KB

    • memory/4100-87-0x0000000007690000-0x00000000076AA000-memory.dmp

      Filesize

      104KB

    • memory/4100-82-0x00000000073C0000-0x00000000073CA000-memory.dmp

      Filesize

      40KB

    • memory/4100-79-0x00000000071F0000-0x0000000007293000-memory.dmp

      Filesize

      652KB

    • memory/4100-68-0x0000000070DA0000-0x0000000070DEC000-memory.dmp

      Filesize

      304KB

    • memory/4100-21-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4100-95-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4100-20-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4100-19-0x00000000050F0000-0x0000000005718000-memory.dmp

      Filesize

      6.2MB

    • memory/4100-17-0x0000000004A60000-0x0000000004A96000-memory.dmp

      Filesize

      216KB

    • memory/4708-22-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4708-94-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4708-88-0x0000000007920000-0x0000000007928000-memory.dmp

      Filesize

      32KB

    • memory/4708-85-0x0000000007830000-0x000000000783E000-memory.dmp

      Filesize

      56KB

    • memory/4708-84-0x0000000007800000-0x0000000007811000-memory.dmp

      Filesize

      68KB

    • memory/4708-81-0x0000000007600000-0x000000000761A000-memory.dmp

      Filesize

      104KB

    • memory/4708-80-0x0000000007C50000-0x00000000082CA000-memory.dmp

      Filesize

      6.5MB

    • memory/4708-78-0x0000000006890000-0x00000000068AE000-memory.dmp

      Filesize

      120KB

    • memory/4708-58-0x0000000070DA0000-0x0000000070DEC000-memory.dmp

      Filesize

      304KB

    • memory/4708-57-0x00000000068B0000-0x00000000068E2000-memory.dmp

      Filesize

      200KB

    • memory/4708-54-0x00000000062F0000-0x000000000633C000-memory.dmp

      Filesize

      304KB

    • memory/4708-53-0x00000000061C0000-0x00000000061DE000-memory.dmp

      Filesize

      120KB

    • memory/4708-27-0x0000000005AF0000-0x0000000005B56000-memory.dmp

      Filesize

      408KB

    • memory/4708-28-0x0000000005B60000-0x0000000005BC6000-memory.dmp

      Filesize

      408KB

    • memory/4708-26-0x0000000005A50000-0x0000000005A72000-memory.dmp

      Filesize

      136KB

    • memory/4708-25-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4708-23-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB