Analysis
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max time kernel
430s -
max time network
432s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20-11-2024 10:31
Behavioral task
behavioral1
Sample
stub.exe
Resource
win10v2004-20241007-en
General
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Target
stub.exe
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Size
469KB
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MD5
e7be6cad5e537ccd392c2a1aefa60ee7
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SHA1
324b9688a5d8c39f5e96e41f451cfc9a225d48d2
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SHA256
8c7a4657ea68a69f364c8acb1881aa6e0f8140d3aba9a917f484ba6ec705db21
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SHA512
0fc526f228ace907e580433d7e85e170ebfdc1eae24cf21d2e35568007f30abf517de2c215b1718ed31787e0ebfdafd89f11e6214f09f01492f75fe209c09037
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SSDEEP
12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS0n9:uiLJbpI7I2WhQqZ709
Malware Config
Extracted
remcos
RemoteHost
else-directors.gl.at.ply.gg:56448
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
Bitdefender.exe
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copy_folder
Bitdefender
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delete_file
true
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hide_file
true
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hide_keylog_file
false
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install_flag
true
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-XTM51M
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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startup_value
VisualStudioServer
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Remcos family
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Processes:
reg.exereg.exereg.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe -
Adds policy Run key to start application 2 TTPs 6 IoCs
Processes:
stub.exeBitdefender.exeiexplore.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run stub.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" stub.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run Bitdefender.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" Bitdefender.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" iexplore.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
stub.exeWScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation stub.exe Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation WScript.exe -
Deletes itself 1 IoCs
Processes:
WScript.exepid process 1544 WScript.exe -
Executes dropped EXE 1 IoCs
Processes:
Bitdefender.exepid process 2360 Bitdefender.exe -
Adds Run key to start application 2 TTPs 6 IoCs
Processes:
Bitdefender.exeiexplore.exestub.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" Bitdefender.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" iexplore.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" stub.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" stub.exe Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VisualStudioServer = "\"C:\\ProgramData\\Bitdefender\\Bitdefender.exe\"" Bitdefender.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
Bitdefender.exeiexplore.exedescription pid process target process PID 2360 set thread context of 2452 2360 Bitdefender.exe iexplore.exe PID 2452 set thread context of 2008 2452 iexplore.exe svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 12 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
WScript.execmd.exeBitdefender.execmd.execmd.exereg.execmd.exereg.exereg.exeWScript.exestub.exeiexplore.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Bitdefender.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language stub.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iexplore.exe -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Modifies registry class 2 IoCs
Processes:
stub.exeiexplore.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings stub.exe Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings iexplore.exe -
Modifies registry key 1 TTPs 3 IoCs
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Suspicious behavior: EnumeratesProcesses 11 IoCs
Processes:
taskmgr.exepid process 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 2452 iexplore.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
Bitdefender.exeiexplore.exepid process 2360 Bitdefender.exe 2452 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
taskmgr.exedescription pid process Token: SeDebugPrivilege 320 taskmgr.exe Token: SeSystemProfilePrivilege 320 taskmgr.exe Token: SeCreateGlobalPrivilege 320 taskmgr.exe Token: 33 320 taskmgr.exe Token: SeIncBasePriorityPrivilege 320 taskmgr.exe -
Suspicious use of FindShellTrayWindow 34 IoCs
Processes:
taskmgr.exepid process 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe -
Suspicious use of SendNotifyMessage 34 IoCs
Processes:
taskmgr.exepid process 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe 320 taskmgr.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
stub.execmd.exeWScript.execmd.exeBitdefender.exeiexplore.execmd.execmd.exedescription pid process target process PID 1784 wrote to memory of 4908 1784 stub.exe cmd.exe PID 1784 wrote to memory of 4908 1784 stub.exe cmd.exe PID 1784 wrote to memory of 4908 1784 stub.exe cmd.exe PID 4908 wrote to memory of 3508 4908 cmd.exe reg.exe PID 4908 wrote to memory of 3508 4908 cmd.exe reg.exe PID 4908 wrote to memory of 3508 4908 cmd.exe reg.exe PID 1784 wrote to memory of 1544 1784 stub.exe WScript.exe PID 1784 wrote to memory of 1544 1784 stub.exe WScript.exe PID 1784 wrote to memory of 1544 1784 stub.exe WScript.exe PID 1544 wrote to memory of 1952 1544 WScript.exe cmd.exe PID 1544 wrote to memory of 1952 1544 WScript.exe cmd.exe PID 1544 wrote to memory of 1952 1544 WScript.exe cmd.exe PID 1952 wrote to memory of 2360 1952 cmd.exe Bitdefender.exe PID 1952 wrote to memory of 2360 1952 cmd.exe Bitdefender.exe PID 1952 wrote to memory of 2360 1952 cmd.exe Bitdefender.exe PID 2360 wrote to memory of 1292 2360 Bitdefender.exe cmd.exe PID 2360 wrote to memory of 1292 2360 Bitdefender.exe cmd.exe PID 2360 wrote to memory of 1292 2360 Bitdefender.exe cmd.exe PID 2360 wrote to memory of 2452 2360 Bitdefender.exe iexplore.exe PID 2360 wrote to memory of 2452 2360 Bitdefender.exe iexplore.exe PID 2360 wrote to memory of 2452 2360 Bitdefender.exe iexplore.exe PID 2360 wrote to memory of 2452 2360 Bitdefender.exe iexplore.exe PID 2452 wrote to memory of 4964 2452 iexplore.exe cmd.exe PID 2452 wrote to memory of 4964 2452 iexplore.exe cmd.exe PID 2452 wrote to memory of 4964 2452 iexplore.exe cmd.exe PID 2452 wrote to memory of 2008 2452 iexplore.exe svchost.exe PID 2452 wrote to memory of 2008 2452 iexplore.exe svchost.exe PID 2452 wrote to memory of 2008 2452 iexplore.exe svchost.exe PID 2452 wrote to memory of 2008 2452 iexplore.exe svchost.exe PID 1292 wrote to memory of 1596 1292 cmd.exe reg.exe PID 1292 wrote to memory of 1596 1292 cmd.exe reg.exe PID 1292 wrote to memory of 1596 1292 cmd.exe reg.exe PID 4964 wrote to memory of 3284 4964 cmd.exe reg.exe PID 4964 wrote to memory of 3284 4964 cmd.exe reg.exe PID 4964 wrote to memory of 3284 4964 cmd.exe reg.exe PID 2452 wrote to memory of 2164 2452 iexplore.exe WScript.exe PID 2452 wrote to memory of 2164 2452 iexplore.exe WScript.exe PID 2452 wrote to memory of 2164 2452 iexplore.exe WScript.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\stub.exe"C:\Users\Admin\AppData\Local\Temp\stub.exe"1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1784 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4908 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:3508
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"2⤵
- Checks computer location settings
- Deletes itself
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1544 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Bitdefender\Bitdefender.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1952 -
C:\ProgramData\Bitdefender\Bitdefender.exeC:\ProgramData\Bitdefender\Bitdefender.exe4⤵
- Adds policy Run key to start application
- 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:2360 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1292 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f6⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:1596
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\??\c:\program files (x86)\internet explorer\iexplore.exe"c:\program files (x86)\internet explorer\iexplore.exe"5⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2452 -
C:\Windows\SysWOW64\cmd.exe/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f6⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4964 -
C:\Windows\SysWOW64\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f7⤵
- UAC bypass
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:3284
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C:\Windows\SysWOW64\svchost.exesvchost.exe6⤵PID:2008
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\fpnoktasayirroucczubhkoyp.vbs"6⤵
- System Location Discovery: System Language Discovery
PID:2164
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:320
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
469KB
MD5e7be6cad5e537ccd392c2a1aefa60ee7
SHA1324b9688a5d8c39f5e96e41f451cfc9a225d48d2
SHA2568c7a4657ea68a69f364c8acb1881aa6e0f8140d3aba9a917f484ba6ec705db21
SHA5120fc526f228ace907e580433d7e85e170ebfdc1eae24cf21d2e35568007f30abf517de2c215b1718ed31787e0ebfdafd89f11e6214f09f01492f75fe209c09037
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Filesize
580B
MD53acb59fed7a8eb82ab2dafe7964abe36
SHA1a18fe9a9e10edc38c8f326a254f643892d24e2d4
SHA256e01b68ba47caab4271202c88172dfd0f3917c9c034a8f0188430388e1c6f9dde
SHA512c483d1f9cb129d3b99af543a888133c98a779332a522fb0860255c34782f97bb0028153195b39c9300d00ff5b6e93b4aa57aef820dad3a63ed52be930a052ef5
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Filesize
526B
MD597c3d0c687f8fce413698cb3cd93a436
SHA1457bdaecd0ed1a105efa42d31ba7737e5f71d76d
SHA256d133a68455e1837b70a85cce64e82d69f9cf8b04554c84b592bfe1fd97f98860
SHA5121a417f68919258c14f5f467533af7f84fdd42bbf5005ba5a1fe744cd08298c2b818f3362f4dacedc23da991f931caceccdfadab978d1b916a03906669276cfe3