Analysis
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max time kernel
147s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
03-11-2022 16:10
Static task
static1
Behavioral task
behavioral1
Sample
929df8a15e583ad6b64698fb702cf44183f0d726d86cada07cf072d7f9f74913.xlsx
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
929df8a15e583ad6b64698fb702cf44183f0d726d86cada07cf072d7f9f74913.xlsx
Resource
win10v2004-20220812-en
General
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Target
929df8a15e583ad6b64698fb702cf44183f0d726d86cada07cf072d7f9f74913.xlsx
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Size
615KB
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MD5
c0540e9242a21eb4de07fb232601dd0e
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SHA1
de322fcde28b0a90d2e89e6545c2cf32c2cc714d
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SHA256
929df8a15e583ad6b64698fb702cf44183f0d726d86cada07cf072d7f9f74913
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SHA512
613e2802a62fc4560a33a05e794b77852f5be6573cd6728946ee9c1cab3e42a8deb2c8e814e71c84be816c8241dbdbdfe17e56051a88a7b0eb8b55385fc7e3fc
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SSDEEP
12288:iMmaVPxIFv02yL3i7zvI287jr43/s7L1j9rYf1g7/TuZuRlMmJMH/x9MoMWZ4MyP:iexI1sLS77Kr4v490f1gvKunMmWmW2aq
Malware Config
Extracted
remcos
XP
xpremcuz300622.ddns.net:3542
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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
oos.exe
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delete_file
false
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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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install_path
%AppData%
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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
Remcos-MMP2I7
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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
kkl
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
EQNEDT32.EXEflow pid process 1 1100 EQNEDT32.EXE -
Downloads MZ/PE file
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Executes dropped EXE 4 IoCs
Processes:
JEF.exeJEF.exeoos.exeoos.exepid process 1420 JEF.exe 1916 JEF.exe 956 oos.exe 1952 oos.exe -
Loads dropped DLL 4 IoCs
Processes:
EQNEDT32.EXEcmd.exepid process 1100 EQNEDT32.EXE 1100 EQNEDT32.EXE 1584 cmd.exe 1584 cmd.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
oos.exeJEF.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" oos.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ JEF.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" JEF.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ JEF.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" JEF.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ oos.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\"" oos.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ oos.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
JEF.exeoos.exedescription pid process target process PID 1420 set thread context of 1916 1420 JEF.exe JEF.exe PID 956 set thread context of 1952 956 oos.exe oos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
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Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE -
Modifies registry class 64 IoCs
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\"" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\ShellEx EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohevi.dll" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1448 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
EXCEL.EXEoos.exepid process 1448 EXCEL.EXE 1448 EXCEL.EXE 1448 EXCEL.EXE 1952 oos.exe -
Suspicious use of WriteProcessMemory 42 IoCs
Processes:
EQNEDT32.EXEJEF.exeJEF.exeWScript.execmd.exeoos.exedescription pid process target process PID 1100 wrote to memory of 1420 1100 EQNEDT32.EXE JEF.exe PID 1100 wrote to memory of 1420 1100 EQNEDT32.EXE JEF.exe PID 1100 wrote to memory of 1420 1100 EQNEDT32.EXE JEF.exe PID 1100 wrote to memory of 1420 1100 EQNEDT32.EXE JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1420 wrote to memory of 1916 1420 JEF.exe JEF.exe PID 1916 wrote to memory of 1960 1916 JEF.exe WScript.exe PID 1916 wrote to memory of 1960 1916 JEF.exe WScript.exe PID 1916 wrote to memory of 1960 1916 JEF.exe WScript.exe PID 1916 wrote to memory of 1960 1916 JEF.exe WScript.exe PID 1960 wrote to memory of 1584 1960 WScript.exe cmd.exe PID 1960 wrote to memory of 1584 1960 WScript.exe cmd.exe PID 1960 wrote to memory of 1584 1960 WScript.exe cmd.exe PID 1960 wrote to memory of 1584 1960 WScript.exe cmd.exe PID 1584 wrote to memory of 956 1584 cmd.exe oos.exe PID 1584 wrote to memory of 956 1584 cmd.exe oos.exe PID 1584 wrote to memory of 956 1584 cmd.exe oos.exe PID 1584 wrote to memory of 956 1584 cmd.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe PID 956 wrote to memory of 1952 956 oos.exe oos.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\929df8a15e583ad6b64698fb702cf44183f0d726d86cada07cf072d7f9f74913.xlsx1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
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C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\JEF.exeC:\Users\Admin\AppData\Roaming\JEF.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\JEF.exe"C:\Users\Admin\AppData\Roaming\JEF.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\oos.exeC:\Users\Admin\AppData\Roaming\oos.exe6⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\oos.exe"C:\Users\Admin\AppData\Roaming\oos.exe"7⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\install.vbsFilesize
398B
MD5a5d3440f90cbfae712166e20870eaed7
SHA1cc1e1a2945eb2ad475234344f7527ad9e9873647
SHA256960a570da95b8d16809cbcc18e8ca4d81e16cb666354ddc1d572daf93f291f02
SHA512d3136a280fbb326ccc5cb5ab1214aed8ccd6baa7f3f89ef9e0b5bf391a957dab2c121640bb056e6cbda0594f83133c4dbb4e1e2f0e290b44a401cd2cf8cfd4aa
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C:\Users\Admin\AppData\Roaming\JEF.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\JEF.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\JEF.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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C:\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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\Users\Admin\AppData\Roaming\JEF.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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\Users\Admin\AppData\Roaming\JEF.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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\Users\Admin\AppData\Roaming\oos.exeFilesize
934KB
MD5706ac294f54bfd2a28d03f1c79165f9b
SHA13d1dfcfe35776eb04ecd773f1d2038f74dbcb4f0
SHA256d35305729959edc2c2f6821a1460ea8b1680ad5083a649080df614221c02492e
SHA512aeb77106f3ac27c05a0178ad56b8d959d3120e883575732e2e656ffc596e23b81e6673ea03fd54598028c1c45a2155c83f8a1f4d3a981a7777e459cb3e7b68c0
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memory/956-98-0x0000000000000000-mapping.dmp
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memory/956-100-0x0000000000910000-0x0000000000A00000-memory.dmpFilesize
960KB
-
memory/956-102-0x0000000004A20000-0x0000000004B04000-memory.dmpFilesize
912KB
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memory/1420-67-0x0000000004F10000-0x0000000004FF4000-memory.dmpFilesize
912KB
-
memory/1420-71-0x0000000005CC0000-0x0000000005D3A000-memory.dmpFilesize
488KB
-
memory/1420-68-0x0000000001E60000-0x0000000001E76000-memory.dmpFilesize
88KB
-
memory/1420-70-0x0000000007C70000-0x0000000007D20000-memory.dmpFilesize
704KB
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memory/1420-65-0x0000000000070000-0x0000000000160000-memory.dmpFilesize
960KB
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memory/1420-62-0x0000000000000000-mapping.dmp
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memory/1448-103-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/1448-58-0x00000000758B1000-0x00000000758B3000-memory.dmpFilesize
8KB
-
memory/1448-57-0x00000000721ED000-0x00000000721F8000-memory.dmpFilesize
44KB
-
memory/1448-56-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/1448-69-0x00000000721ED000-0x00000000721F8000-memory.dmpFilesize
44KB
-
memory/1448-54-0x000000002F8A1000-0x000000002F8A4000-memory.dmpFilesize
12KB
-
memory/1448-104-0x00000000721ED000-0x00000000721F8000-memory.dmpFilesize
44KB
-
memory/1448-55-0x0000000071201000-0x0000000071203000-memory.dmpFilesize
8KB
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memory/1584-94-0x0000000000000000-mapping.dmp
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memory/1916-80-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-77-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-72-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-89-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-84-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1916-85-0x000000000043168C-mapping.dmp
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memory/1916-82-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-79-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-78-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-91-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
-
memory/1916-75-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1916-73-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1952-118-0x000000000043168C-mapping.dmp
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memory/1952-122-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1952-123-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1952-124-0x0000000000400000-0x000000000047E000-memory.dmpFilesize
504KB
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memory/1960-90-0x0000000000000000-mapping.dmp