Analysis

  • max time kernel
    148s
  • max time network
    154s
  • 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 12:02

General

  • Target

    MalwareBazaar.exe

  • Size

    939KB

  • MD5

    3f69729a8f2b22e625bb984f28758ebc

  • SHA1

    ab8aab5952dfcf0d705daff76448920c67b6241d

  • SHA256

    d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd

  • SHA512

    c4622e82f66aa728ded76ef628bd31ddcd35581a10a6043e735e557a26c8f9c72c67713f29a3ed90f647bf268484b44cf812918a02aa8e1539c3fdac7bcc1fa1

  • SSDEEP

    24576:Yglv8Jv17LLE1hUG+n1KD9Wa9PMEgDzx9mZREOUqqHXONlVUE:oPYf+n1KDghPx9ARDhqHXOR

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.

  • 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.

  • 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 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
    "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.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:2264
    • 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\MalwareBazaar.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1516
    • 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"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:404
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HODoCxSdp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp171D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4720
    • C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
      "C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4060

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

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    4719ad3516c1873779d49e3c991ed9e0

    SHA1

    f3923f8d7ed7d2fc34e94e197728ed47fb147a17

    SHA256

    cf58084f59d847a639e60994d2fe0c4b7b72eda4cd7576144408f8c68850bd88

    SHA512

    49a28e11ee2f4c3c4a655dd5db7bf975f1a03a6030778e935539f0960f3d2068fd25a476fcab5b1042dc4ad82e4a0f1f0e40165c9190b27abbba1b7c4505f759

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_izdg2gl5.yyd.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp171D.tmp

    Filesize

    1KB

    MD5

    47eb33c983ff6b34082df8c53b9e3c33

    SHA1

    94f724b356a382227a1691c7019c084084fd880d

    SHA256

    132db6dac6bb4a74ded8c992f8fd563524aa61ca4fb8d84ddb0bc27d8428aec1

    SHA512

    e69cc45b41219ccd8e6ceeecb54b326a7af3af86d44e97e608198e40fe68c5c4e5d2c0b682e59f981cfaf5e77c4dfcc549e9db3f83d5b514e663635ad88542d7

  • memory/404-78-0x00000000080A0000-0x000000000871A000-memory.dmp

    Filesize

    6.5MB

  • memory/404-66-0x0000000006CD0000-0x0000000006CEE000-memory.dmp

    Filesize

    120KB

  • memory/404-82-0x0000000007C60000-0x0000000007C71000-memory.dmp

    Filesize

    68KB

  • memory/404-81-0x0000000007CE0000-0x0000000007D76000-memory.dmp

    Filesize

    600KB

  • memory/404-86-0x0000000007D80000-0x0000000007D88000-memory.dmp

    Filesize

    32KB

  • memory/404-79-0x0000000007A60000-0x0000000007A7A000-memory.dmp

    Filesize

    104KB

  • memory/404-67-0x0000000007730000-0x00000000077D3000-memory.dmp

    Filesize

    652KB

  • memory/404-83-0x0000000007C90000-0x0000000007C9E000-memory.dmp

    Filesize

    56KB

  • memory/404-55-0x00000000076F0000-0x0000000007722000-memory.dmp

    Filesize

    200KB

  • memory/404-56-0x0000000074D40000-0x0000000074D8C000-memory.dmp

    Filesize

    304KB

  • memory/404-53-0x0000000006710000-0x000000000672E000-memory.dmp

    Filesize

    120KB

  • memory/404-50-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/404-93-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/404-35-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/404-25-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/1516-84-0x0000000007950000-0x0000000007964000-memory.dmp

    Filesize

    80KB

  • memory/1516-94-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/1516-24-0x0000000005D70000-0x0000000005DD6000-memory.dmp

    Filesize

    408KB

  • memory/1516-36-0x0000000005DE0000-0x0000000006134000-memory.dmp

    Filesize

    3.3MB

  • memory/1516-21-0x0000000005420000-0x0000000005442000-memory.dmp

    Filesize

    136KB

  • memory/1516-20-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/1516-22-0x0000000005C10000-0x0000000005C76000-memory.dmp

    Filesize

    408KB

  • memory/1516-85-0x0000000007A50000-0x0000000007A6A000-memory.dmp

    Filesize

    104KB

  • memory/1516-18-0x00000000055E0000-0x0000000005C08000-memory.dmp

    Filesize

    6.2MB

  • memory/1516-80-0x0000000007780000-0x000000000778A000-memory.dmp

    Filesize

    40KB

  • memory/1516-68-0x0000000074D40000-0x0000000074D8C000-memory.dmp

    Filesize

    304KB

  • memory/1516-16-0x0000000002AF0000-0x0000000002B26000-memory.dmp

    Filesize

    216KB

  • memory/1516-54-0x0000000006400000-0x000000000644C000-memory.dmp

    Filesize

    304KB

  • memory/1516-19-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/2264-8-0x0000000005CE0000-0x0000000005CEE000-memory.dmp

    Filesize

    56KB

  • memory/2264-3-0x00000000051C0000-0x0000000005764000-memory.dmp

    Filesize

    5.6MB

  • memory/2264-11-0x000000007449E000-0x000000007449F000-memory.dmp

    Filesize

    4KB

  • memory/2264-10-0x0000000005F70000-0x000000000602E000-memory.dmp

    Filesize

    760KB

  • memory/2264-1-0x0000000000080000-0x000000000016E000-memory.dmp

    Filesize

    952KB

  • memory/2264-9-0x0000000005E70000-0x0000000005E7E000-memory.dmp

    Filesize

    56KB

  • memory/2264-52-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/2264-17-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/2264-5-0x0000000005C50000-0x0000000005C5A000-memory.dmp

    Filesize

    40KB

  • memory/2264-6-0x0000000005E90000-0x0000000005F2C000-memory.dmp

    Filesize

    624KB

  • memory/2264-7-0x00000000062C0000-0x0000000006390000-memory.dmp

    Filesize

    832KB

  • memory/2264-0-0x000000007449E000-0x000000007449F000-memory.dmp

    Filesize

    4KB

  • memory/2264-2-0x0000000004B30000-0x0000000004BC2000-memory.dmp

    Filesize

    584KB

  • memory/2264-4-0x0000000074490000-0x0000000074C40000-memory.dmp

    Filesize

    7.7MB

  • memory/4060-48-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-49-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-47-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-46-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-95-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-96-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-97-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-99-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-100-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-101-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-102-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-103-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-104-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4060-105-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB