Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/02/2024, 11:03

General

  • Target

    PO-2143224.exe

  • Size

    865KB

  • MD5

    d90d929eed0b2f19a2dfc97207e4f1ed

  • SHA1

    abb561c141dab098b5d28f8d98fb290820b0f1a6

  • SHA256

    688e1a87b049676464e3aa5303d9a48f184da32c3fdfa0c092e1744153e761b0

  • SHA512

    6f463e82d2b3cba431bf6a7d7ef52075b52e694ba96599d66fd98564e9de0395f7237504acba82c7f2ff2c95dda366de3b53d02191dc12bde3134b9dd369d784

  • SSDEEP

    24576:BNP+nbEexncWPdhCCKlhOr8c/eQMNYCi0M:mbEqncAC1ieQMNYC

Malware Config

Extracted

Family

remcos

Botnet

DESK

C2

198.27.121.194:2024

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-EQJXDT

  • 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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 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 26 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TQbZIZmgTPXQc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD755.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2176
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TQbZIZmgTPXQc.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3176
    • 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\PO-2143224.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2912
    • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3160
      • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
        C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\onpzlviky"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1392
      • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
        C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\onpzlviky"
        3⤵
          PID:4940
        • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
          C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\etchk"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:1004
        • C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe
          C:\Users\Admin\AppData\Local\Temp\PO-2143224.exe /stext "C:\Users\Admin\AppData\Local\Temp\urxokknposotwvfagmgjvysyxhegppaqu"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3964

    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

            80d28c22297c5bc2b1f6986fc15ba7a6

            SHA1

            32ec74aa9d6cd55f1db1394d70a2cf9ebf0e66be

            SHA256

            0e29b9822e07272b13f9fc7ef165e9530f3ee243f0234996600909a659d219bd

            SHA512

            bee2a1ae8b8a4c4a97001fc143750b652a727a987695fb1e766c3ad993dbb974509d8ece722156c7b9341cc942cb1a920580a78f2637707e0f605a98bb7f0581

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_az34jf1g.knx.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\tmpD755.tmp

            Filesize

            1KB

            MD5

            94e27db60ec9db4a0aa5fb5dce813752

            SHA1

            a9d549f00a3fd73acd300abe1889849528a4605c

            SHA256

            c4ebf6fcc047faef8a7d023cefcc4696936649fbfd9037854abb2a635646c362

            SHA512

            f1a1c0a328773065664c39f9609cb938c8351bb978560b5e53769fae833ec9e9c9951e65acd6ddc4ab8f5ec2228026dc1be8725a02c84373a8e761572ae9db6d

          • C:\Users\Admin\AppData\Local\Temp\urxokknposotwvfagmgjvysyxhegppaqu

            Filesize

            4KB

            MD5

            9d1c4331e92ea47959e79f26ca09d973

            SHA1

            f8baa65953243feba3299fbaa7af110fbc7011b2

            SHA256

            ffddf68859952ecc2a486189ef0b15519f898d4d1ba04f6555264714b2d9108f

            SHA512

            76cc4cfa6a89d69035c0539294a5903f5b9b01314aaa2ffef7ccc6a5cdc163bf2336fa98e6f5406510b74c8da8bf5cbac5c55718df58f3b082b7fe8f8dda3daf

          • memory/116-10-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/116-2-0x0000000005360000-0x0000000005904000-memory.dmp

            Filesize

            5.6MB

          • memory/116-7-0x0000000004E20000-0x0000000004E32000-memory.dmp

            Filesize

            72KB

          • memory/116-8-0x0000000004E40000-0x0000000004E52000-memory.dmp

            Filesize

            72KB

          • memory/116-9-0x0000000007AB0000-0x0000000007B70000-memory.dmp

            Filesize

            768KB

          • memory/116-5-0x0000000004C90000-0x0000000004C9A000-memory.dmp

            Filesize

            40KB

          • memory/116-11-0x0000000004F90000-0x0000000004FA0000-memory.dmp

            Filesize

            64KB

          • memory/116-4-0x0000000004F90000-0x0000000004FA0000-memory.dmp

            Filesize

            64KB

          • memory/116-3-0x0000000004CA0000-0x0000000004D32000-memory.dmp

            Filesize

            584KB

          • memory/116-6-0x0000000004FA0000-0x000000000503C000-memory.dmp

            Filesize

            624KB

          • memory/116-0-0x00000000001C0000-0x000000000029E000-memory.dmp

            Filesize

            888KB

          • memory/116-1-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/116-42-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/1004-117-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1004-128-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1004-113-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1004-125-0x0000000000400000-0x0000000000457000-memory.dmp

            Filesize

            348KB

          • memory/1392-130-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1392-119-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1392-131-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/1392-127-0x0000000000400000-0x0000000000424000-memory.dmp

            Filesize

            144KB

          • memory/2912-25-0x00000000058E0000-0x0000000005946000-memory.dmp

            Filesize

            408KB

          • memory/2912-101-0x0000000007530000-0x0000000007544000-memory.dmp

            Filesize

            80KB

          • memory/2912-19-0x0000000002640000-0x0000000002650000-memory.dmp

            Filesize

            64KB

          • memory/2912-18-0x0000000005090000-0x00000000056B8000-memory.dmp

            Filesize

            6.2MB

          • memory/2912-110-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/2912-17-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/2912-103-0x0000000007610000-0x0000000007618000-memory.dmp

            Filesize

            32KB

          • memory/2912-41-0x0000000005A30000-0x0000000005D84000-memory.dmp

            Filesize

            3.3MB

          • memory/2912-16-0x0000000004A20000-0x0000000004A56000-memory.dmp

            Filesize

            216KB

          • memory/2912-23-0x0000000002640000-0x0000000002650000-memory.dmp

            Filesize

            64KB

          • memory/2912-59-0x0000000072E60000-0x0000000072EAC000-memory.dmp

            Filesize

            304KB

          • memory/2912-70-0x0000000006F30000-0x0000000006F4E000-memory.dmp

            Filesize

            120KB

          • memory/2912-72-0x000000007F6E0000-0x000000007F6F0000-memory.dmp

            Filesize

            64KB

          • memory/2912-102-0x0000000007630000-0x000000000764A000-memory.dmp

            Filesize

            104KB

          • memory/2912-85-0x0000000002640000-0x0000000002650000-memory.dmp

            Filesize

            64KB

          • memory/2912-100-0x0000000007520000-0x000000000752E000-memory.dmp

            Filesize

            56KB

          • memory/2912-95-0x0000000007570000-0x0000000007606000-memory.dmp

            Filesize

            600KB

          • memory/3160-89-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-142-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3160-88-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-149-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-148-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-92-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-93-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-147-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-146-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-145-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-144-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-143-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-87-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-135-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3160-98-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-99-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-138-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3160-139-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3160-140-0x0000000010000000-0x0000000010019000-memory.dmp

            Filesize

            100KB

          • memory/3160-82-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-29-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-111-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-141-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-53-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-27-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-36-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-52-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-54-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3160-56-0x0000000000400000-0x0000000000482000-memory.dmp

            Filesize

            520KB

          • memory/3176-20-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/3176-83-0x0000000005620000-0x0000000005630000-memory.dmp

            Filesize

            64KB

          • memory/3176-55-0x00000000068D0000-0x00000000068EE000-memory.dmp

            Filesize

            120KB

          • memory/3176-86-0x0000000005620000-0x0000000005630000-memory.dmp

            Filesize

            64KB

          • memory/3176-28-0x0000000006300000-0x0000000006366000-memory.dmp

            Filesize

            408KB

          • memory/3176-57-0x0000000006EC0000-0x0000000006F0C000-memory.dmp

            Filesize

            304KB

          • memory/3176-24-0x0000000005910000-0x0000000005932000-memory.dmp

            Filesize

            136KB

          • memory/3176-91-0x0000000007C00000-0x0000000007C1A000-memory.dmp

            Filesize

            104KB

          • memory/3176-109-0x00000000743C0000-0x0000000074B70000-memory.dmp

            Filesize

            7.7MB

          • memory/3176-84-0x00000000078E0000-0x0000000007983000-memory.dmp

            Filesize

            652KB

          • memory/3176-94-0x0000000007C70000-0x0000000007C7A000-memory.dmp

            Filesize

            40KB

          • memory/3176-90-0x0000000008240000-0x00000000088BA000-memory.dmp

            Filesize

            6.5MB

          • memory/3176-26-0x0000000005620000-0x0000000005630000-memory.dmp

            Filesize

            64KB

          • memory/3176-96-0x0000000007E00000-0x0000000007E11000-memory.dmp

            Filesize

            68KB

          • memory/3176-22-0x0000000005620000-0x0000000005630000-memory.dmp

            Filesize

            64KB

          • memory/3176-58-0x00000000078A0000-0x00000000078D2000-memory.dmp

            Filesize

            200KB

          • memory/3176-71-0x0000000072E60000-0x0000000072EAC000-memory.dmp

            Filesize

            304KB

          • memory/3176-60-0x000000007FC40000-0x000000007FC50000-memory.dmp

            Filesize

            64KB

          • memory/3964-116-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/3964-120-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/3964-133-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB

          • memory/3964-112-0x0000000000400000-0x0000000000478000-memory.dmp

            Filesize

            480KB