Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2023, 17:20

General

  • Target

    FAT986545600986.exe

  • Size

    1.0MB

  • MD5

    470249dbfe3ac7f1d16ea4a52ef76fb3

  • SHA1

    984ef38fbfa4efd6b9310a07c4a6b2be63e328bf

  • SHA256

    f77532a0a209676025270db283534fc63ba0780415e8273d670fc6d1bc4bf1f5

  • SHA512

    ec2edf6140afcf84719a8a2d53303ee86fa6b32406b0fc99db6d87dcc162577b9766f88e5fb7643e4cb4fb09c5431c5ab3d8029800eab02aa1b81914e3faba39

  • SSDEEP

    24576:h34/up+pJ1sRbSz55MlrTQF4ZriIqBT3peD:h38PJ1QSz55CsIiIqBs

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

107.175.229.139:8087

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-IZFV1M

  • 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 6 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\FAT986545600986.exe
    "C:\Users\Admin\AppData\Local\Temp\FAT986545600986.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3192
    • 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\FAT986545600986.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1268
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zulqgtKXtL.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1236
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zulqgtKXtL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp79E3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2872
    • C:\Users\Admin\AppData\Local\Temp\FAT986545600986.exe
      "C:\Users\Admin\AppData\Local\Temp\FAT986545600986.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2156

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\remcos\logs.dat

          Filesize

          144B

          MD5

          3d9e480958e1cecdcfa994cf9b464964

          SHA1

          0bfc9fc58c75e4f10a2bf05b438e7c8e96f3c683

          SHA256

          808df5654d69d9aa181afdffe90de57165f0ed2adf91d71c1709a309823049ac

          SHA512

          86f3ca3595525b5ca253c0340de9d52e23e290b97eae6c591b96113cf061843bc7a139c72e5cf627fb948d9f3199bafaf19417af2142cbc5bc75c351f6e7786c

        • 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

          c507c17b33fef4244b5f3766d99faec9

          SHA1

          373f41c5c97897716cde8060ae8c714c45518c47

          SHA256

          9556920293cc2738b4062206339b4134f5b4e4c7704b25cd00c355b9af0778c4

          SHA512

          f21cd7511c66938a433229dd4c0b21058ccdbf1ed0a629d2771e41d02a8263d30d10a2d5871d807e87ac4bade2b07df2347300b82e77b560a34aa0bb666c076d

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pywattea.nkm.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Local\Temp\tmp79E3.tmp

          Filesize

          1KB

          MD5

          09926921f7608a41fd39bba063257770

          SHA1

          f951c8787cb96478529a9fb0c9b664a0c88c35ff

          SHA256

          ea03f9bebee436b168bc16b9aaf64aa8a74f1f2a08983ca0d98bb96809439df3

          SHA512

          a3492df07b3a62d8a675b7965c5598158b4e0884ea3a52b13f886c51a98b96db54c3afdedec87cd64e0aedc75a99683c6116e1f9b418936b8376bc81a53b101f

        • memory/1236-96-0x0000000007C30000-0x0000000007C38000-memory.dmp

          Filesize

          32KB

        • memory/1236-93-0x0000000007B40000-0x0000000007B4E000-memory.dmp

          Filesize

          56KB

        • memory/1236-102-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/1236-95-0x0000000007C50000-0x0000000007C6A000-memory.dmp

          Filesize

          104KB

        • memory/1236-94-0x0000000007B50000-0x0000000007B64000-memory.dmp

          Filesize

          80KB

        • memory/1236-92-0x0000000007B10000-0x0000000007B21000-memory.dmp

          Filesize

          68KB

        • memory/1236-61-0x00000000075B0000-0x00000000075E2000-memory.dmp

          Filesize

          200KB

        • memory/1236-62-0x000000007EF80000-0x000000007EF90000-memory.dmp

          Filesize

          64KB

        • memory/1236-73-0x0000000006BB0000-0x0000000006BCE000-memory.dmp

          Filesize

          120KB

        • memory/1236-74-0x0000000005160000-0x0000000005170000-memory.dmp

          Filesize

          64KB

        • memory/1236-75-0x00000000077F0000-0x0000000007893000-memory.dmp

          Filesize

          652KB

        • memory/1236-22-0x0000000005160000-0x0000000005170000-memory.dmp

          Filesize

          64KB

        • memory/1236-88-0x0000000007F50000-0x00000000085CA000-memory.dmp

          Filesize

          6.5MB

        • memory/1236-63-0x00000000738E0000-0x000000007392C000-memory.dmp

          Filesize

          304KB

        • memory/1236-25-0x0000000005F40000-0x0000000005FA6000-memory.dmp

          Filesize

          408KB

        • memory/1236-21-0x0000000005160000-0x0000000005170000-memory.dmp

          Filesize

          64KB

        • memory/1236-36-0x0000000006120000-0x0000000006186000-memory.dmp

          Filesize

          408KB

        • memory/1236-35-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/1236-60-0x0000000006610000-0x000000000665C000-memory.dmp

          Filesize

          304KB

        • memory/1236-59-0x00000000065D0000-0x00000000065EE000-memory.dmp

          Filesize

          120KB

        • memory/1268-86-0x0000000004F90000-0x0000000004FA0000-memory.dmp

          Filesize

          64KB

        • memory/1268-15-0x0000000002970000-0x00000000029A6000-memory.dmp

          Filesize

          216KB

        • memory/1268-76-0x00000000738E0000-0x000000007392C000-memory.dmp

          Filesize

          304KB

        • memory/1268-91-0x0000000007840000-0x00000000078D6000-memory.dmp

          Filesize

          600KB

        • memory/1268-103-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/1268-20-0x0000000004F90000-0x0000000004FA0000-memory.dmp

          Filesize

          64KB

        • memory/1268-18-0x0000000004F90000-0x0000000004FA0000-memory.dmp

          Filesize

          64KB

        • memory/1268-47-0x0000000005DE0000-0x0000000006134000-memory.dmp

          Filesize

          3.3MB

        • memory/1268-17-0x00000000055D0000-0x0000000005BF8000-memory.dmp

          Filesize

          6.2MB

        • memory/1268-16-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/1268-90-0x0000000007630000-0x000000000763A000-memory.dmp

          Filesize

          40KB

        • memory/1268-23-0x00000000052F0000-0x0000000005312000-memory.dmp

          Filesize

          136KB

        • memory/1268-89-0x00000000075C0000-0x00000000075DA000-memory.dmp

          Filesize

          104KB

        • memory/1268-87-0x0000000004F90000-0x0000000004FA0000-memory.dmp

          Filesize

          64KB

        • memory/2156-109-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-115-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-110-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-141-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-136-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-48-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-134-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-49-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-53-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-51-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-116-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-129-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-128-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-57-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-123-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-122-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-52-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-56-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-58-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/2156-107-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/3192-6-0x0000000006240000-0x0000000006258000-memory.dmp

          Filesize

          96KB

        • memory/3192-37-0x0000000005250000-0x0000000005260000-memory.dmp

          Filesize

          64KB

        • memory/3192-8-0x00000000062A0000-0x00000000062AA000-memory.dmp

          Filesize

          40KB

        • memory/3192-3-0x0000000005070000-0x0000000005102000-memory.dmp

          Filesize

          584KB

        • memory/3192-2-0x00000000056F0000-0x0000000005C94000-memory.dmp

          Filesize

          5.6MB

        • memory/3192-5-0x0000000005230000-0x000000000523A000-memory.dmp

          Filesize

          40KB

        • memory/3192-7-0x0000000006290000-0x0000000006298000-memory.dmp

          Filesize

          32KB

        • memory/3192-1-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3192-4-0x0000000005250000-0x0000000005260000-memory.dmp

          Filesize

          64KB

        • memory/3192-9-0x0000000006820000-0x00000000068D8000-memory.dmp

          Filesize

          736KB

        • memory/3192-54-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3192-19-0x0000000074E10000-0x00000000755C0000-memory.dmp

          Filesize

          7.7MB

        • memory/3192-0-0x0000000000590000-0x00000000006A0000-memory.dmp

          Filesize

          1.1MB

        • memory/3192-10-0x00000000063F0000-0x000000000648C000-memory.dmp

          Filesize

          624KB