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
    10-09-2024 02:23

General

  • Target

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe

  • Size

    991KB

  • MD5

    c18b6791df510f32c72a619ef3dd7c7d

  • SHA1

    671e8af4049ebc8e93a4a9c968dfe747c24c3a60

  • SHA256

    f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69

  • SHA512

    ac5d54ad8e46324286d55f7c1a78a6315483e338ebebd36c5d2c2db30085da9ef734bec20782120f4ec8eaf101bccc51f8612fa26adb6e0f0af0711c350b1974

  • SSDEEP

    12288:vdZshZWHXnhEE8tpUEx1I94L+R49xIUBZjlP4JH0Y6QC4zmEs0mwF0WOs5HvrWZX:vzshZEXw7jIS6RuXGUDQFDMEKW4THM05

Malware Config

Extracted

Family

remcos

Botnet

Aug 23C

C2

method8888.ddns.net: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-RCNGU6

  • 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\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
    "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:656
    • 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\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1428
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TkhOsslQS.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2920
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TkhOsslQS" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8A.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4072
    • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
      "C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2300
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\szcupgjg"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1600
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbhnqzuzbtx"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:5096
      • C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe
        C:\Users\Admin\AppData\Local\Temp\f94c2da3623066f0066d1e403069a3125160b4200a4d86138cee932cc6970e69.exe /stext "C:\Users\Admin\AppData\Local\Temp\evmyrrfbpbpljm"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    cc9d2eee4d040c28f983f99a800710e0

    SHA1

    0ef8b9ae5d5beef05759e72ae51d985f908f4dd0

    SHA256

    989d63b29ac77315f95f2f50716cefaaeef6265f55c244956798d26631d72e8c

    SHA512

    6c16ec5f5e3d0857659ba3b62a3f98e9db26d13c45f68e881808029b0e669931481e334e77a72a05a5523ec7c5802c942fb25984933e9273c15bdd8a84f768a0

  • 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

    9b414d3fcbc46e72f0fe9dd71309efb1

    SHA1

    679dd4c0caecb2e9bc9a6ab8eb16d0d13f2cab3e

    SHA256

    b048a9995b6e4930f66969994200b0124dbd445d572caeaec9bd0607a75d938c

    SHA512

    176f7f23f936db7ce4ea0b7b0d2c0e9bac52cd13850aa683389abb23ef2b8a1f6e2ae7c5168e78fa9cef0e0a27f8f75a6468501e47123c154fb2ef2682f7872f

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_onmd2itx.zwy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    4KB

    MD5

    1891919175c888ce82e9bd8a047b01ad

    SHA1

    502a6892a5d27ecb791ac5aa6d8586944f540453

    SHA256

    a6c43b4e4b8681cf0ef56c49c730fa77e34dc82db0260253a3ba75039030b9ec

    SHA512

    8bb940050b1abf6c27db133ed446f41e108f670f361ed5102408832ce33d9b87cd0880723441f1632292eeeb0a319c4e0fac0ea659eb55ebe1130cc3e6c776a3

  • C:\Users\Admin\AppData\Local\Temp\tmpA8A.tmp

    Filesize

    1KB

    MD5

    17b3942b75d95b35c1ef432229937033

    SHA1

    ccc7f8cdb08e7d1207f519c94a5ff8e6634972bb

    SHA256

    b29e2063d8db8469b42532a642c8d22ede523514fb149e2a11c644999f46aa65

    SHA512

    ae11172c5ec3379d1b16a0d46a9a900146e184aa8fcb62a7fb19e541a13e16cde861338ce59ee49e7abd94aa11a30aaa2bfc4958deb1bb2a725fccd47ea548a5

  • memory/656-10-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/656-13-0x0000000006D10000-0x0000000006DD0000-memory.dmp

    Filesize

    768KB

  • memory/656-4-0x00000000058D0000-0x00000000058DA000-memory.dmp

    Filesize

    40KB

  • memory/656-7-0x0000000007130000-0x0000000007218000-memory.dmp

    Filesize

    928KB

  • memory/656-8-0x0000000005DD0000-0x0000000005DEA000-memory.dmp

    Filesize

    104KB

  • memory/656-9-0x000000007528E000-0x000000007528F000-memory.dmp

    Filesize

    4KB

  • memory/656-5-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/656-11-0x0000000006CA0000-0x0000000006CAC000-memory.dmp

    Filesize

    48KB

  • memory/656-12-0x0000000006CB0000-0x0000000006CC0000-memory.dmp

    Filesize

    64KB

  • memory/656-6-0x0000000005B70000-0x0000000005C0C000-memory.dmp

    Filesize

    624KB

  • memory/656-40-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/656-3-0x00000000059E0000-0x0000000005A72000-memory.dmp

    Filesize

    584KB

  • memory/656-0-0x000000007528E000-0x000000007528F000-memory.dmp

    Filesize

    4KB

  • memory/656-1-0x0000000000F10000-0x000000000100A000-memory.dmp

    Filesize

    1000KB

  • memory/656-2-0x0000000005EF0000-0x0000000006494000-memory.dmp

    Filesize

    5.6MB

  • memory/784-106-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/784-105-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/784-103-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1428-18-0x00000000024D0000-0x0000000002506000-memory.dmp

    Filesize

    216KB

  • memory/1428-22-0x0000000004EF0000-0x0000000004F56000-memory.dmp

    Filesize

    408KB

  • memory/1428-20-0x00000000051A0000-0x00000000057C8000-memory.dmp

    Filesize

    6.2MB

  • memory/1428-19-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-21-0x0000000004E50000-0x0000000004E72000-memory.dmp

    Filesize

    136KB

  • memory/1428-34-0x00000000057D0000-0x0000000005B24000-memory.dmp

    Filesize

    3.3MB

  • memory/1428-54-0x0000000005DE0000-0x0000000005DFE000-memory.dmp

    Filesize

    120KB

  • memory/1428-55-0x0000000005E70000-0x0000000005EBC000-memory.dmp

    Filesize

    304KB

  • memory/1428-98-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-57-0x0000000006D90000-0x0000000006DC2000-memory.dmp

    Filesize

    200KB

  • memory/1428-58-0x0000000075B10000-0x0000000075B5C000-memory.dmp

    Filesize

    304KB

  • memory/1428-74-0x0000000006DD0000-0x0000000006DEE000-memory.dmp

    Filesize

    120KB

  • memory/1428-24-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-23-0x0000000004F60000-0x0000000004FC6000-memory.dmp

    Filesize

    408KB

  • memory/1428-35-0x0000000075280000-0x0000000075A30000-memory.dmp

    Filesize

    7.7MB

  • memory/1428-90-0x0000000007360000-0x0000000007374000-memory.dmp

    Filesize

    80KB

  • memory/1428-82-0x0000000007190000-0x000000000719A000-memory.dmp

    Filesize

    40KB

  • memory/1428-89-0x0000000007350000-0x000000000735E000-memory.dmp

    Filesize

    56KB

  • memory/1428-88-0x0000000007320000-0x0000000007331000-memory.dmp

    Filesize

    68KB

  • memory/1428-87-0x00000000073A0000-0x0000000007436000-memory.dmp

    Filesize

    600KB

  • memory/1600-101-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1600-107-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1600-104-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2300-133-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-140-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-86-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-149-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-150-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-84-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-83-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-132-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-141-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-85-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-125-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-119-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2300-118-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2300-115-0x0000000010000000-0x0000000010019000-memory.dmp

    Filesize

    100KB

  • memory/2300-124-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2300-120-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2920-80-0x0000000007DD0000-0x000000000844A000-memory.dmp

    Filesize

    6.5MB

  • memory/2920-92-0x0000000007AB0000-0x0000000007AB8000-memory.dmp

    Filesize

    32KB

  • memory/2920-91-0x0000000007AD0000-0x0000000007AEA000-memory.dmp

    Filesize

    104KB

  • memory/2920-81-0x0000000007790000-0x00000000077AA000-memory.dmp

    Filesize

    104KB

  • memory/2920-79-0x0000000007650000-0x00000000076F3000-memory.dmp

    Filesize

    652KB

  • memory/2920-68-0x0000000075B10000-0x0000000075B5C000-memory.dmp

    Filesize

    304KB

  • memory/5096-102-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5096-112-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/5096-108-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB