Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231201-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231201-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2023, 21:13

General

  • Target

    $R2VGET4.exe

  • Size

    1.1MB

  • MD5

    aec9174c8479a575306048bb92f94829

  • SHA1

    049eaa475e61cbe1e38c007507bd64d30fbe82b9

  • SHA256

    79015a0c68260b6317ecfea1983091e74c98dd8ced80766e1515df93534a3f6d

  • SHA512

    08bdd9bb7200ba25cb2939d3d845ddfc4a8de1cdbe0848888bd33861b0c26b599d29173bf507ca4118a5b1c166e775d53caafe9934cd5da5343382e92b76ac1d

  • SSDEEP

    24576:ogeik1YB0bJMqpiXP4kRRb2X/yVqRNNbmfz89qLs4v7WkiHa/Gx8yo7Y:ogeikqBsJM1QuRsq4R4v7Wki6/GxA

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

167.114.189.33:2404

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-7ZDF66

  • 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.

  • 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 11 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\$R2VGET4.exe
    "C:\Users\Admin\AppData\Local\Temp\$R2VGET4.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4928
    • 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\$R2VGET4.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eSFNAbyW.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4856
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eSFNAbyW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF889.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3236
    • C:\Users\Admin\AppData\Local\Temp\$R2VGET4.exe
      "C:\Users\Admin\AppData\Local\Temp\$R2VGET4.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:3608

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          f46438ff20cf4b7b7067194df35037d6

          SHA1

          f4c9e481ed2fed4e0becd3c5fb70e9ce7556c459

          SHA256

          f50f82180042af4e8a931751f988578a24e550d4fe34d3dcfe23b583d9b1f8c7

          SHA512

          d048c05d839ef97c4882764c23cb8f1cebcc04837f17f490d27f08d6153a0b231a48676530d87344342068712c4abf1362fad28deeb91fd2e0120818990e452e

        • 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

          fcb3bdab5c4ee89ad206fcfb87533905

          SHA1

          cbd007e57dc64063049e03c14860428a66d5d2b7

          SHA256

          cae76768699cbc021db79a68b1c11c238551ab1d401c6a6602494d9369824002

          SHA512

          00349125b6517c1b7fa6e50cc74cf13bf6f7de37f40eeb589d52a66a499e0c5d391b383933ebc3ce8811d84ac8f93061544d25b699ed28403498d4851501554b

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vfzpw5v3.5di.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmpF889.tmp

          Filesize

          1KB

          MD5

          3065fee6c163dcdc801aa730fcbb782c

          SHA1

          e33bc33ccd0ea8853e78cf55b5bad2d6c713de8a

          SHA256

          004919a0a7baf7b0a74698c91c8926af7154f4ffe38c7d82ba8b7d2cba0c91c8

          SHA512

          a5adad403551721b8c5e23af8d99adb3b23078c2f03828896b409754e8e402947d8b693eceabd90e1af7ad276f80699f6c2af581eba02bd926deec99054aa302

        • memory/2632-90-0x0000000007110000-0x000000000711E000-memory.dmp

          Filesize

          56KB

        • memory/2632-32-0x00000000054B0000-0x0000000005804000-memory.dmp

          Filesize

          3.3MB

        • memory/2632-86-0x0000000006EF0000-0x0000000006F0A000-memory.dmp

          Filesize

          104KB

        • memory/2632-73-0x0000000006160000-0x000000000617E000-memory.dmp

          Filesize

          120KB

        • memory/2632-89-0x00000000070E0000-0x00000000070F1000-memory.dmp

          Filesize

          68KB

        • memory/2632-63-0x000000007F9C0000-0x000000007F9D0000-memory.dmp

          Filesize

          64KB

        • memory/2632-91-0x0000000007120000-0x0000000007134000-memory.dmp

          Filesize

          80KB

        • memory/2632-17-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/2632-18-0x0000000004670000-0x0000000004680000-memory.dmp

          Filesize

          64KB

        • memory/2632-16-0x00000000045C0000-0x00000000045F6000-memory.dmp

          Filesize

          216KB

        • memory/2632-19-0x0000000004670000-0x0000000004680000-memory.dmp

          Filesize

          64KB

        • memory/2632-20-0x0000000004CB0000-0x00000000052D8000-memory.dmp

          Filesize

          6.2MB

        • memory/2632-92-0x0000000007200000-0x000000000721A000-memory.dmp

          Filesize

          104KB

        • memory/2632-23-0x0000000004AC0000-0x0000000004AE2000-memory.dmp

          Filesize

          136KB

        • memory/2632-99-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/2632-62-0x0000000073270000-0x00000000732BC000-memory.dmp

          Filesize

          304KB

        • memory/2632-26-0x0000000005980000-0x00000000059E6000-memory.dmp

          Filesize

          408KB

        • memory/3608-54-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-55-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-107-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-42-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-47-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-112-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-106-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-49-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-105-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-52-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-56-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-113-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-119-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-120-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-125-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/3608-126-0x0000000000400000-0x0000000000481000-memory.dmp

          Filesize

          516KB

        • memory/4856-58-0x0000000006140000-0x000000000618C000-memory.dmp

          Filesize

          304KB

        • memory/4856-93-0x00000000076F0000-0x00000000076F8000-memory.dmp

          Filesize

          32KB

        • memory/4856-61-0x0000000073270000-0x00000000732BC000-memory.dmp

          Filesize

          304KB

        • memory/4856-84-0x0000000007090000-0x0000000007133000-memory.dmp

          Filesize

          652KB

        • memory/4856-83-0x0000000002750000-0x0000000002760000-memory.dmp

          Filesize

          64KB

        • memory/4856-85-0x0000000007A20000-0x000000000809A000-memory.dmp

          Filesize

          6.5MB

        • memory/4856-60-0x000000007F950000-0x000000007F960000-memory.dmp

          Filesize

          64KB

        • memory/4856-87-0x0000000007440000-0x000000000744A000-memory.dmp

          Filesize

          40KB

        • memory/4856-88-0x0000000007650000-0x00000000076E6000-memory.dmp

          Filesize

          600KB

        • memory/4856-21-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/4856-22-0x0000000002750000-0x0000000002760000-memory.dmp

          Filesize

          64KB

        • memory/4856-57-0x00000000060B0000-0x00000000060CE000-memory.dmp

          Filesize

          120KB

        • memory/4856-24-0x0000000005110000-0x0000000005176000-memory.dmp

          Filesize

          408KB

        • memory/4856-59-0x0000000006680000-0x00000000066B2000-memory.dmp

          Filesize

          200KB

        • memory/4856-100-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/4928-2-0x00000000055E0000-0x0000000005B84000-memory.dmp

          Filesize

          5.6MB

        • memory/4928-4-0x00000000050D0000-0x00000000050E0000-memory.dmp

          Filesize

          64KB

        • memory/4928-3-0x0000000004F10000-0x0000000004FA2000-memory.dmp

          Filesize

          584KB

        • memory/4928-5-0x0000000004FD0000-0x0000000004FDA000-memory.dmp

          Filesize

          40KB

        • memory/4928-50-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/4928-0-0x0000000000420000-0x0000000000548000-memory.dmp

          Filesize

          1.2MB

        • memory/4928-1-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/4928-6-0x00000000051E0000-0x000000000527C000-memory.dmp

          Filesize

          624KB

        • memory/4928-11-0x00000000069C0000-0x0000000006A94000-memory.dmp

          Filesize

          848KB

        • memory/4928-10-0x00000000053B0000-0x00000000053BE000-memory.dmp

          Filesize

          56KB

        • memory/4928-9-0x00000000050D0000-0x00000000050E0000-memory.dmp

          Filesize

          64KB

        • memory/4928-8-0x00000000747C0000-0x0000000074F70000-memory.dmp

          Filesize

          7.7MB

        • memory/4928-7-0x0000000005380000-0x0000000005396000-memory.dmp

          Filesize

          88KB