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Analysis

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

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 14:16

General

  • Target

    AWB81311002907.exe

  • Size

    931KB

  • MD5

    c8b97aad582adb6ccddc6f3e74bda215

  • SHA1

    bbf2e45bd5af0695f5f82fed5728a480a7fd4c04

  • SHA256

    d26670d5f425962b546d10ecd4d148f5884a3f392afe1c5fb4426466d4454c34

  • SHA512

    7ede8146da39ea716cd6c64f3a60ca324566c3000cb5c1275f5f1563cca726ec8b97420c7e4620f4fe998f8542896bb99294cef83a7e8bfae2e1e46fb4bbc100

  • SSDEEP

    24576:9elw4o5E6Gkf1CGkuH2sz6rtlHa08qsCJAUke0O:9elw4o5E+C1ttl605X3ko

Malware Config

Extracted

Family

remcos

Botnet

Sept. 04C

C2

154.216.20.211:6902

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-YGC9WY

  • 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 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).

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 10 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
    "C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3948
    • 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\AWB81311002907.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3852
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\iVWcGN.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3236
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iVWcGN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp40AE.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4364
    • C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
      "C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\bvyyznwvudzi"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:924
      • C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\eydrafgwplrnsssa"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:3704
      • C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe
        C:\Users\Admin\AppData\Local\Temp\AWB81311002907.exe /stext "C:\Users\Admin\AppData\Local\Temp\osjkbqrqdtjscggeemm"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    aca7d568a31abca0c2ded173879dde92

    SHA1

    e546201633d3f65117d5e2d447bae164352085ab

    SHA256

    2bae5ca60e156c875d0eb8f3b0e6f294938ac335a10efd7011189d0ed94c21bc

    SHA512

    a4b8f170ad3fedae61e6d79ff2e440a869827af21a51b2c3ff101d7416e1a4414cd8ab248719b8fdd1516496c848e6d5655cc6cc39c328202d7c77c0f78d9db0

  • 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

    1cfc48ab1235c3d6b8903e76d97476df

    SHA1

    fa606a34716fd4002b1f16a2ede7e4bd18a16208

    SHA256

    dd6286323ac59b412c4ec574c3405cd967b3f63a964d27de09b1a97221823726

    SHA512

    1bffe2c14f7e572a711b1febe7b2d7e48edb68102af0cc9e500cc909f8269905cba72c1f9d0dd7aceacb6f9d6b79fea84b8a70f862fb512bc45d64ccb4b0936f

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4olniikf.wp0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    1891919175c888ce82e9bd8a047b01ad

    SHA1

    502a6892a5d27ecb791ac5aa6d8586944f540453

    SHA256

    a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

    SHA512

    8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

  • C:\Users\Admin\AppData\Local\Temp\tmp40AE.tmp

    Filesize

    1KB

    MD5

    a9256b814eaa694e8a89614a955b9cba

    SHA1

    6617925e66e8995a87c5e37e1edaa2edf67faa1c

    SHA256

    148c4ca53b236cf5b81d1e5e6a62fa63819a21231de6cef323038b0a33339443

    SHA512

    9632e4ff6aad37b124e0d022a21e766839abc4293ddb516f8ecf5dabd56bdf97f04cd9f1cc1a29291ae5a74a2133cf6a814a3b3e9441d61aeeb88a68cf9cacdc

  • memory/924-78-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/924-81-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/924-76-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2160-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-128-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-127-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-114-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-112-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2160-113-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2160-109-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2160-144-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-143-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-135-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-136-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2160-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/3236-32-0x0000000005E00000-0x0000000006154000-memory.dmp

    Filesize

    3.3MB

  • memory/3236-90-0x0000000075930000-0x000000007597C000-memory.dmp

    Filesize

    304KB

  • memory/3236-102-0x00000000078E0000-0x00000000078F1000-memory.dmp

    Filesize

    68KB

  • memory/3236-106-0x0000000007A20000-0x0000000007A3A000-memory.dmp

    Filesize

    104KB

  • memory/3236-26-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-120-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-19-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3236-25-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3704-84-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3704-83-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3704-77-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3852-64-0x0000000075930000-0x000000007597C000-memory.dmp

    Filesize

    304KB

  • memory/3852-18-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-75-0x00000000074E0000-0x0000000007583000-memory.dmp

    Filesize

    652KB

  • memory/3852-74-0x0000000006850000-0x000000000686E000-memory.dmp

    Filesize

    120KB

  • memory/3852-56-0x0000000006870000-0x00000000068BC000-memory.dmp

    Filesize

    304KB

  • memory/3852-88-0x0000000007C70000-0x00000000082EA000-memory.dmp

    Filesize

    6.5MB

  • memory/3852-89-0x0000000007630000-0x000000000764A000-memory.dmp

    Filesize

    104KB

  • memory/3852-55-0x0000000006310000-0x000000000632E000-memory.dmp

    Filesize

    120KB

  • memory/3852-15-0x0000000004D50000-0x0000000004D86000-memory.dmp

    Filesize

    216KB

  • memory/3852-16-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-17-0x0000000005420000-0x0000000005A48000-memory.dmp

    Filesize

    6.2MB

  • memory/3852-22-0x0000000005360000-0x0000000005382000-memory.dmp

    Filesize

    136KB

  • memory/3852-121-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-100-0x00000000076A0000-0x00000000076AA000-memory.dmp

    Filesize

    40KB

  • memory/3852-20-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3852-101-0x00000000078B0000-0x0000000007946000-memory.dmp

    Filesize

    600KB

  • memory/3852-24-0x0000000005AC0000-0x0000000005B26000-memory.dmp

    Filesize

    408KB

  • memory/3852-104-0x0000000007860000-0x000000000786E000-memory.dmp

    Filesize

    56KB

  • memory/3852-105-0x0000000007870000-0x0000000007884000-memory.dmp

    Filesize

    80KB

  • memory/3852-63-0x00000000068E0000-0x0000000006912000-memory.dmp

    Filesize

    200KB

  • memory/3852-107-0x0000000007950000-0x0000000007958000-memory.dmp

    Filesize

    32KB

  • memory/3852-23-0x0000000005A50000-0x0000000005AB6000-memory.dmp

    Filesize

    408KB

  • memory/3948-7-0x000000007508E000-0x000000007508F000-memory.dmp

    Filesize

    4KB

  • memory/3948-3-0x0000000005240000-0x00000000052D2000-memory.dmp

    Filesize

    584KB

  • memory/3948-8-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3948-9-0x00000000063D0000-0x0000000006490000-memory.dmp

    Filesize

    768KB

  • memory/3948-5-0x0000000005210000-0x000000000521A000-memory.dmp

    Filesize

    40KB

  • memory/3948-4-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/3948-10-0x0000000008CC0000-0x0000000008D5C000-memory.dmp

    Filesize

    624KB

  • memory/3948-6-0x0000000006880000-0x0000000006898000-memory.dmp

    Filesize

    96KB

  • memory/3948-2-0x00000000057F0000-0x0000000005D94000-memory.dmp

    Filesize

    5.6MB

  • memory/3948-1-0x0000000000720000-0x000000000080C000-memory.dmp

    Filesize

    944KB

  • memory/3948-0-0x000000007508E000-0x000000007508F000-memory.dmp

    Filesize

    4KB

  • memory/3948-54-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4900-80-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4900-79-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/4900-82-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB