Analysis
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max time kernel
147s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
03-03-2023 09:30
Static task
static1
Behavioral task
behavioral1
Sample
SW_030323.xlsx
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
SW_030323.xlsx
Resource
win10v2004-20230220-en
General
-
Target
SW_030323.xlsx
-
Size
861KB
-
MD5
e43e70829f350e566468a8d7b158ecca
-
SHA1
57a4e905a83e715a69e107dcc63f5bf8a606f9eb
-
SHA256
6d544e1b25b2081b2c9f895d5045085820ba2087bed05f20c2c59cfbc44bea02
-
SHA512
e765eaaf83eb79afa29158f98dd636c39d789f31cd8648754adf32d18a9dd31a4a1eedd68227e84480a8309f5008047f251ccab5a275e8ffab652ba7faa8f443
-
SSDEEP
24576:qhBFwctvyY1KgmwJR4AHCtsDrqdVHpYx/LFOmOaWSGx9:qhBFF0Y0HwMttYGrexXWS2
Malware Config
Extracted
formbook
poub
WY0eksfISzRg4O6c+opnGL6gaw==
moRjn9ExtYi8UmUo+Tya
2vME+GedoxzFnuLXesUoVj4=
EvW4JWJ1NQ8nN3tA3SM=
2mK9efMZMgN1VOs=
8d0jua5b0J6AQEW7
/2cyThOd37DSTYMASDye4Q0t/Vs=
ral+tbIh2KKAQEW7
YLY9jsPtYB/FRmMo+Tya
R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=
KFXGg/T1pCC9GjrxUPTcjw==
8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=
c7am8nhhlCo=
UW91trZj6dENxuRdpxOvW1Cf
sjOMUcvq6lYJCZEfV4euFzY=
62nBgPjdmWQkmWElww==
64E8JqA1aruSUvw=
NqI1reXpcR+REye0
8+y1oOsbjgSyEhjXUPTcjw==
Rx9by8gNBwN1VOs=
Muif0yE4CQN1VOs=
VEt6//SsIukFo46EOTs=
Z8su52MYL67C
usDwuHRs8/KlWg==
idmltXXu7XAgHLE/UPTcjw==
QPrxO2shWNiGexGboHDSRqBQ1TBd
hq9rqBND8/KlWg==
QS9iHFx08/KlWg==
v1soVFoThEdt/B/dK0v4+6Wb
7rqJytN13KKAQEW7
OWbeN2SDJwonsI6EOTs=
aqQrrKZDm16GMlAtvxavW1Cf
imnEZWIEbC4M8Q+i
Bry3oQg5+6ZaUNxzwg==
B3vYmyxPQS5XYvmCsqQXX8X948Zf
KbGBmwwCyKTKsUcRUNN6CD61aw==
2WpDae4P+W4cdqc8kPBcjqg0wS1X
MvkZLPRY25jI
Alr0VZGxYxG3dR/zSNjBhQ==
ZJkdjczlrF+8l0Os
dcmMkFm+QhFD4OM=
fMdUrd4J1n4mmWElww==
Gat+k1fHg11vTQ==
sn+7Q4uxaAu9FyGv7k24F1DWaBEvmRI=
CjvGRTnXOhtN6QSNxhmvW1Cf
CpHvP2VSxaKAQEW7
qQWkEUJYFKhPttOZ4MarX8KKLl+/Jg==
GNVP4yIy8/KlWg==
pqfVAERhYxN7YPM=
9nS5b/AGCpZNAfZj1A==
a3GcpSND8/KlWg==
fin6NmQXayreIOrzPyw=
EjdROfeTsDPVH+rzPyw=
DO4xD8nURBwM8Q+i
+p/LQHFh0KOAQEW7
iNos10QpwjvjvFrXJYtYFiuHdA==
SX//aFP4Yi5T6NbcKQr07J6e
2NKh0dNr52sTdH4OSNjBhQ==
ZMSJmgsxFrlp5fnecrgeVYcP4xRZNho=
oXmlavAJ+3IbFbl3Gm4H+iKG
ijjWRYCaXiTcigreSNjBhQ==
ZqpH49I4XPu1k+rzPyw=
ZZUh+4FrrBbKukgJWoeuFzY=
lLnTxHn7rq/W9G8rzjsgCnyBYw==
drzjup.space
Signatures
-
Xloader payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1448-77-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral1/memory/1448-81-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral1/memory/1448-90-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral1/memory/1828-94-0x0000000000090000-0x00000000000BC000-memory.dmp xloader behavioral1/memory/1828-96-0x0000000000090000-0x00000000000BC000-memory.dmp xloader -
Blocklisted process makes network request 2 IoCs
Processes:
EQNEDT32.EXErundll32.exeflow pid process 3 300 EQNEDT32.EXE 20 1828 rundll32.exe -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wezfenkpk.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Control Panel\International\Geo\Nation wezfenkpk.exe -
Executes dropped EXE 3 IoCs
Processes:
name.exewezfenkpk.exewezfenkpk.exepid process 112 name.exe 1056 wezfenkpk.exe 1448 wezfenkpk.exe -
Loads dropped DLL 4 IoCs
Processes:
cmd.exename.exewezfenkpk.exepid process 1232 cmd.exe 112 name.exe 112 name.exe 1056 wezfenkpk.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
rundll32.exedescription ioc process Key created \Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8PEX6TGHUB = "C:\\Program Files (x86)\\Ox2kdbbv\\mfcllr.exe" rundll32.exe -
Suspicious use of SetThreadContext 4 IoCs
Processes:
wezfenkpk.exewezfenkpk.exerundll32.exedescription pid process target process PID 1056 set thread context of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1448 set thread context of 1368 1448 wezfenkpk.exe Explorer.EXE PID 1448 set thread context of 1368 1448 wezfenkpk.exe Explorer.EXE PID 1828 set thread context of 1368 1828 rundll32.exe Explorer.EXE -
Drops file in Program Files directory 1 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification C:\Program Files (x86)\Ox2kdbbv\mfcllr.exe rundll32.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.
-
Processes:
EXCEL.EXErundll32.exedescription ioc process 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 deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" 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 HTML Editor\shell\edit EXCEL.EXE Key created \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\edit\COMMAND EXCEL.EXE Key deleted \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\edit\command EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor 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 HTML Editor\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 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\edit EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" 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 Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Key created \Registry\User\S-1-5-21-1914912747-3343861975-731272777-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 rundll32.exe Key created \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\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 EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE -
Modifies registry class 64 IoCs
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\mhtmlfile EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ = "&Open" 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\htmlfile\shell\Print\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ThreadingModel = "Apartment" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ = "&Open" 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\Microsoft Excel\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon\ = "\"%1\"" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit 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\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\"" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList 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\.mht\OpenWithList\MSPub.exe 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\Microsoft Excel\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\ = "&Open" 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print" 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1460 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 23 IoCs
Processes:
wezfenkpk.exerundll32.exepid process 1448 wezfenkpk.exe 1448 wezfenkpk.exe 1448 wezfenkpk.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 1368 Explorer.EXE -
Suspicious behavior: MapViewOfSection 9 IoCs
Processes:
wezfenkpk.exewezfenkpk.exerundll32.exepid process 1056 wezfenkpk.exe 1448 wezfenkpk.exe 1448 wezfenkpk.exe 1448 wezfenkpk.exe 1448 wezfenkpk.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe 1828 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
wezfenkpk.exeExplorer.EXErundll32.exedescription pid process Token: SeDebugPrivilege 1448 wezfenkpk.exe Token: SeShutdownPrivilege 1368 Explorer.EXE Token: SeShutdownPrivilege 1368 Explorer.EXE Token: SeShutdownPrivilege 1368 Explorer.EXE Token: SeShutdownPrivilege 1368 Explorer.EXE Token: SeDebugPrivilege 1828 rundll32.exe Token: SeShutdownPrivilege 1368 Explorer.EXE Token: SeShutdownPrivilege 1368 Explorer.EXE -
Suspicious use of FindShellTrayWindow 16 IoCs
Processes:
EXCEL.EXEExplorer.EXEpid process 1460 EXCEL.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1460 EXCEL.EXE -
Suspicious use of SendNotifyMessage 6 IoCs
Processes:
Explorer.EXEpid process 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE 1368 Explorer.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1460 EXCEL.EXE 1460 EXCEL.EXE 1460 EXCEL.EXE -
Suspicious use of WriteProcessMemory 33 IoCs
Processes:
EQNEDT32.EXEcmd.exename.exewezfenkpk.exeExplorer.EXErundll32.exedescription pid process target process PID 300 wrote to memory of 1232 300 EQNEDT32.EXE cmd.exe PID 300 wrote to memory of 1232 300 EQNEDT32.EXE cmd.exe PID 300 wrote to memory of 1232 300 EQNEDT32.EXE cmd.exe PID 300 wrote to memory of 1232 300 EQNEDT32.EXE cmd.exe PID 1232 wrote to memory of 112 1232 cmd.exe name.exe PID 1232 wrote to memory of 112 1232 cmd.exe name.exe PID 1232 wrote to memory of 112 1232 cmd.exe name.exe PID 1232 wrote to memory of 112 1232 cmd.exe name.exe PID 112 wrote to memory of 1056 112 name.exe wezfenkpk.exe PID 112 wrote to memory of 1056 112 name.exe wezfenkpk.exe PID 112 wrote to memory of 1056 112 name.exe wezfenkpk.exe PID 112 wrote to memory of 1056 112 name.exe wezfenkpk.exe PID 1056 wrote to memory of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1056 wrote to memory of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1056 wrote to memory of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1056 wrote to memory of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1056 wrote to memory of 1448 1056 wezfenkpk.exe wezfenkpk.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1368 wrote to memory of 1828 1368 Explorer.EXE rundll32.exe PID 1828 wrote to memory of 1400 1828 rundll32.exe cmd.exe PID 1828 wrote to memory of 1400 1828 rundll32.exe cmd.exe PID 1828 wrote to memory of 1400 1828 rundll32.exe cmd.exe PID 1828 wrote to memory of 1400 1828 rundll32.exe cmd.exe PID 1828 wrote to memory of 1716 1828 rundll32.exe Firefox.exe PID 1828 wrote to memory of 1716 1828 rundll32.exe Firefox.exe PID 1828 wrote to memory of 1716 1828 rundll32.exe Firefox.exe PID 1828 wrote to memory of 1716 1828 rundll32.exe Firefox.exe PID 1828 wrote to memory of 1716 1828 rundll32.exe Firefox.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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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\SW_030323.xlsx2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\SysWOW64\rundll32.exe"2⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"3⤵
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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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
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Public\name.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Public\name.exeC:\Users\Public\name.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe" C:\Users\Admin\AppData\Local\Temp\vsuua.et4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"5⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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\fzswddmia.ajFilesize
196KB
MD52c9ba6c19ec21081b759d3e0f889dda1
SHA13809a0f38138c973d14b346ab4d62496fc895d82
SHA2563c8c84a00d3e569587c0c3918def00f8869e6e9b3327eec42c8ffdec733cc8b5
SHA512b369cfe1625dc1057fe98d5bf9d2153aac2545ef47fc5d128f9c9f96d7531fa26ed49670d334d12bb8b9dc7d43ae66e3e82653286742e1e299ae6b24452e70bd
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C:\Users\Admin\AppData\Local\Temp\vsuua.etFilesize
5KB
MD5fab2e47f3265300d0c9224bc2ac3f883
SHA1d714768273e25c70e4b24189b160c39fe95ac9c4
SHA2562a6fe5103416cdcb2fbd6c15ac572a01cc70f02946c300a7737fcb0e4cfdaeaa
SHA5129f6452f21e5870943037709a655e62a0e2708c7276ea0e24fd217fa119fc846f2f4b4104d49db3f055f972c1331f5e9f5cd9872fb0e3476a3edad2ab231edd63
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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C:\Users\Public\name.exeFilesize
233KB
MD5a41acdf19b7e87d38d877be588d5f56c
SHA1ee6284581f51d55a4b0751934c49cbddb21a398d
SHA256dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc
SHA5122125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a
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C:\Users\Public\name.exeFilesize
233KB
MD5a41acdf19b7e87d38d877be588d5f56c
SHA1ee6284581f51d55a4b0751934c49cbddb21a398d
SHA256dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc
SHA5122125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a
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\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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\Users\Admin\AppData\Local\Temp\wezfenkpk.exeFilesize
19KB
MD53de9c51a02680d20b72024c1700330cb
SHA1b4b48d9e01b7bab67207c1f6b27c5644fde0de40
SHA256a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7
SHA512c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9
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\Users\Public\name.exeFilesize
233KB
MD5a41acdf19b7e87d38d877be588d5f56c
SHA1ee6284581f51d55a4b0751934c49cbddb21a398d
SHA256dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc
SHA5122125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a
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memory/1368-84-0x0000000007180000-0x00000000072D8000-memory.dmpFilesize
1.3MB
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memory/1368-88-0x0000000007E80000-0x0000000008007000-memory.dmpFilesize
1.5MB
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memory/1368-103-0x0000000009B70000-0x0000000009CDE000-memory.dmpFilesize
1.4MB
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memory/1368-101-0x0000000009B70000-0x0000000009CDE000-memory.dmpFilesize
1.4MB
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memory/1368-100-0x0000000009B70000-0x0000000009CDE000-memory.dmpFilesize
1.4MB
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memory/1448-90-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1448-83-0x0000000000170000-0x0000000000181000-memory.dmpFilesize
68KB
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memory/1448-77-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1448-81-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1448-82-0x0000000000930000-0x0000000000C33000-memory.dmpFilesize
3.0MB
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memory/1448-87-0x0000000000200000-0x0000000000211000-memory.dmpFilesize
68KB
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memory/1460-54-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1460-110-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1828-94-0x0000000000090000-0x00000000000BC000-memory.dmpFilesize
176KB
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memory/1828-96-0x0000000000090000-0x00000000000BC000-memory.dmpFilesize
176KB
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memory/1828-99-0x0000000000870000-0x0000000000900000-memory.dmpFilesize
576KB
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memory/1828-95-0x0000000002180000-0x0000000002483000-memory.dmpFilesize
3.0MB
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memory/1828-93-0x0000000000D70000-0x0000000000D7E000-memory.dmpFilesize
56KB
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memory/1828-91-0x0000000000D70000-0x0000000000D7E000-memory.dmpFilesize
56KB
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memory/1828-89-0x0000000000D70000-0x0000000000D7E000-memory.dmpFilesize
56KB