Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/08/2024, 10:20

General

  • Target

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe

  • Size

    998KB

  • MD5

    2732e2eb4efa4972d94d993a31a67f44

  • SHA1

    60e02e1d0f4f002532f7ea2fc24adaf80db430bd

  • SHA256

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

  • SHA512

    159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

  • SSDEEP

    24576:4ALYnT2KsbNqGuYsqf3hfGwuvMSNMTosRap+EyT:4xT9oqVq5fPcMS/tp+F

Malware Config

Extracted

Family

remcos

Botnet

CLIENT

C2

64.188.18.85:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    xlorers.exe

  • copy_folder

    xlorers

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-GK0LTU

  • 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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Detected Nirsoft tools 3 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 1 IoCs

    Password recovery tool for various web browsers

  • 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 3 IoCs

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

  • Executes dropped EXE 6 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 11 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe
    "C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YexrSjnKtvvgI.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YexrSjnKtvvgI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6C4.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1608
    • C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe
      "C:\Users\Admin\AppData\Local\Temp\c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\ProgramData\xlorers\xlorers.exe
        "C:\ProgramData\xlorers\xlorers.exe"
        3⤵
        • 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:4600
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YexrSjnKtvvgI.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1812
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YexrSjnKtvvgI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4CE3.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1568
        • C:\ProgramData\xlorers\xlorers.exe
          "C:\ProgramData\xlorers\xlorers.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\iyotfmcgmuaqkkdajmjzduessoxbekgwc"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:924
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\ssbmgf"
            5⤵
            • Executes dropped EXE
            • Accesses Microsoft Outlook accounts
            • System Location Discovery: System Language Discovery
            PID:516
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\vugfhxxbw"
            5⤵
            • Executes dropped EXE
            PID:4220
          • C:\ProgramData\xlorers\xlorers.exe
            C:\ProgramData\xlorers\xlorers.exe /stext "C:\Users\Admin\AppData\Local\Temp\vugfhxxbw"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3160

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\xlorers\xlorers.exe

    Filesize

    998KB

    MD5

    2732e2eb4efa4972d94d993a31a67f44

    SHA1

    60e02e1d0f4f002532f7ea2fc24adaf80db430bd

    SHA256

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

    SHA512

    159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

  • 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

    158fb07adc605c896f9ea4b085c1f3a7

    SHA1

    0015d587263cf22736e59d3985ba4b5b04cfed68

    SHA256

    3b690f90df447b4e078717eee77b659e620685252c6ba08c6abc60c4099183b1

    SHA512

    7b83c6829dda90da967ec64cf402ac269e6df33a34bbb0167c89116f840dd09cf48ddfd611637ea910906a68a98779eb5b388d2d0a153b7026dd9e2fda3d3d44

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_utnq1yih.qfd.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    15e28d82a9ee8a45c10bcf671fef0362

    SHA1

    2b126b086a1191cb8b4d444e87781358d51af3a4

    SHA256

    012fbb5f15d52a9560cf0e77fd36837ec2c56aff7a989d31c3d40d4f6df6cf9d

    SHA512

    3dd749523858a54e7e5ededba47d54715c9d5663dd0bd609363de7442436d1f0e924c5e4706e3ac413b79ddb6a18c796cc0ad166b4c87a3a7a6b009ba77fee82

  • C:\Users\Admin\AppData\Local\Temp\tmpF6C4.tmp

    Filesize

    1KB

    MD5

    c765bd0832090d47cee2023dc1d237cd

    SHA1

    062ebacad5108bb341a82c6c03f556980030d821

    SHA256

    278f88ee6ffd5a38582f6411d06ec5bb522054d95bcbab7c1fc414f7af850d38

    SHA512

    329734a7d3fff5094c008b7766b0f8fbacedbd2a86ecb0cf357cfcb6e4520aaa98542cee851b0450120bc628200658fbb460f4853dd1622f74b722cb1d2fe223

  • memory/516-122-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/516-135-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/516-131-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/924-120-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/924-123-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/924-129-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/980-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/980-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/980-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/980-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/980-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-117-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-115-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-151-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-150-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-149-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-148-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-147-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-146-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-145-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-119-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-144-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-141-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1612-142-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1612-138-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/1612-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-114-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1612-116-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/1776-1-0x0000000000E90000-0x0000000000F90000-memory.dmp

    Filesize

    1024KB

  • memory/1776-4-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/1776-6-0x00000000070F0000-0x000000000710E000-memory.dmp

    Filesize

    120KB

  • memory/1776-7-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

    Filesize

    4KB

  • memory/1776-5-0x0000000005CC0000-0x0000000005CCA000-memory.dmp

    Filesize

    40KB

  • memory/1776-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

    Filesize

    4KB

  • memory/1776-3-0x0000000005990000-0x0000000005A22000-memory.dmp

    Filesize

    584KB

  • memory/1776-2-0x0000000005EA0000-0x0000000006444000-memory.dmp

    Filesize

    5.6MB

  • memory/1776-9-0x0000000006C50000-0x0000000006C66000-memory.dmp

    Filesize

    88KB

  • memory/1776-8-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/1776-10-0x0000000009490000-0x0000000009550000-memory.dmp

    Filesize

    768KB

  • memory/1776-50-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/1776-11-0x000000000C5F0000-0x000000000C68C000-memory.dmp

    Filesize

    624KB

  • memory/1812-97-0x0000000005CC0000-0x0000000006014000-memory.dmp

    Filesize

    3.3MB

  • memory/1812-100-0x00000000757B0000-0x00000000757FC000-memory.dmp

    Filesize

    304KB

  • memory/1812-110-0x0000000007350000-0x00000000073F3000-memory.dmp

    Filesize

    652KB

  • memory/1812-111-0x0000000007610000-0x0000000007621000-memory.dmp

    Filesize

    68KB

  • memory/1812-112-0x0000000007650000-0x0000000007664000-memory.dmp

    Filesize

    80KB

  • memory/1812-99-0x0000000006110000-0x000000000615C000-memory.dmp

    Filesize

    304KB

  • memory/3160-130-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3160-126-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/3160-128-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4632-67-0x0000000007530000-0x0000000007BAA000-memory.dmp

    Filesize

    6.5MB

  • memory/4632-66-0x0000000006BB0000-0x0000000006C53000-memory.dmp

    Filesize

    652KB

  • memory/4632-72-0x0000000007120000-0x000000000712E000-memory.dmp

    Filesize

    56KB

  • memory/4632-71-0x00000000070F0000-0x0000000007101000-memory.dmp

    Filesize

    68KB

  • memory/4632-74-0x0000000007230000-0x000000000724A000-memory.dmp

    Filesize

    104KB

  • memory/4632-70-0x0000000007170000-0x0000000007206000-memory.dmp

    Filesize

    600KB

  • memory/4632-69-0x0000000006F60000-0x0000000006F6A000-memory.dmp

    Filesize

    40KB

  • memory/4632-68-0x0000000006EF0000-0x0000000006F0A000-memory.dmp

    Filesize

    104KB

  • memory/4632-75-0x0000000007210000-0x0000000007218000-memory.dmp

    Filesize

    32KB

  • memory/4632-78-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/4632-21-0x0000000005440000-0x0000000005462000-memory.dmp

    Filesize

    136KB

  • memory/4632-73-0x0000000007130000-0x0000000007144000-memory.dmp

    Filesize

    80KB

  • memory/4632-65-0x00000000061D0000-0x00000000061EE000-memory.dmp

    Filesize

    120KB

  • memory/4632-55-0x0000000071680000-0x00000000716CC000-memory.dmp

    Filesize

    304KB

  • memory/4632-54-0x0000000006190000-0x00000000061C2000-memory.dmp

    Filesize

    200KB

  • memory/4632-53-0x0000000005C70000-0x0000000005CBC000-memory.dmp

    Filesize

    304KB

  • memory/4632-52-0x0000000005BC0000-0x0000000005BDE000-memory.dmp

    Filesize

    120KB

  • memory/4632-16-0x00000000022C0000-0x00000000022F6000-memory.dmp

    Filesize

    216KB

  • memory/4632-22-0x0000000005510000-0x0000000005576000-memory.dmp

    Filesize

    408KB

  • memory/4632-17-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/4632-39-0x00000000056F0000-0x0000000005A44000-memory.dmp

    Filesize

    3.3MB

  • memory/4632-18-0x0000000004C90000-0x00000000052B8000-memory.dmp

    Filesize

    6.2MB

  • memory/4632-19-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/4632-29-0x0000000005580000-0x00000000055E6000-memory.dmp

    Filesize

    408KB