nanocore | e33a790854091478f63dbb3aa9cd465d8b72e2fe8276a6ef11eb05219425179a

Analysis

max time kernel
118s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 10:07

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General

Target

INVOICE.rtf
Size

79KB
MD5

d3a5532e4cccbf16de85fc3defd1fd27
SHA1

66db633b15618b652921f74f642354bcdf0fee66
SHA256

e33a790854091478f63dbb3aa9cd465d8b72e2fe8276a6ef11eb05219425179a
SHA512

41513ae7e53ac7bd1fc9c22b61a46a8c5ec46b6b96cf57bfac979feb47876439256e8062d36c7e8e857dc24544c85e590ca4f0268812c29514a7cfdbf9014a3e
SSDEEP

768:rwAbZSibMX9gRWjtwAbZSibMX9gRWjtwAbZSibMX9gRWjCd4tDquh0lOpznXsaEG:rwAlRkwAlRkwAlRstmuhXpznc6TPzVd

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

tzitziklishop3.ddns.net:1663

Mutex

fbf9faaf-f2bf-43ae-91ec-07031d9e9f20

Attributes

activate_away_mode
true
backup_connection_host
tzitziklishop3.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-11-24T23:15:19.996809436Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1663
default_group
NEW JOY
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
fbf9faaf-f2bf-43ae-91ec-07031d9e9f20
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
tzitziklishop3.ddns.net
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	2548	EQNEDT32.EXE
6	2548	EQNEDT32.EXE

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2880	big62293.exe
1600	big62293.exe

Loads dropped DLL 2 IoCs

pid	Process
2548	EQNEDT32.EXE
2548	EQNEDT32.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DDP Subsystem = "C:\\Program Files (x86)\\DDP Subsystem\\ddpss.exe"	big62293.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	big62293.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2880 set thread context of 1600	2880	big62293.exe	35

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DDP Subsystem\ddpss.exe	big62293.exe
File opened for modification	C:\Program Files (x86)\DDP Subsystem\ddpss.exe	big62293.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Office loads VBA resources, possible macro or embedded object present

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2124	schtasks.exe
2372	schtasks.exe

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2548	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.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\""	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.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\""	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.EXE

Modifies registry class 64 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\mhtmlfile	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\ = "&Edit"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	WINWORD.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"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\ = "&Edit"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\ShellEx	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	WINWORD.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"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit	WINWORD.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\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	WINWORD.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"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe	WINWORD.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"	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2876	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
240	powershell.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe
1600	big62293.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1600	big62293.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	240	powershell.exe
Token: SeDebugPrivilege	1600	big62293.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	WINWORD.EXE
2876	WINWORD.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2880	2548	EQNEDT32.EXE	29
PID 2548 wrote to memory of 2880	2548	EQNEDT32.EXE	29
PID 2548 wrote to memory of 2880	2548	EQNEDT32.EXE	29
PID 2548 wrote to memory of 2880	2548	EQNEDT32.EXE	29
PID 2876 wrote to memory of 2732	2876	WINWORD.EXE	32
PID 2876 wrote to memory of 2732	2876	WINWORD.EXE	32
PID 2876 wrote to memory of 2732	2876	WINWORD.EXE	32
PID 2876 wrote to memory of 2732	2876	WINWORD.EXE	32
PID 2880 wrote to memory of 240	2880	big62293.exe	33
PID 2880 wrote to memory of 240	2880	big62293.exe	33
PID 2880 wrote to memory of 240	2880	big62293.exe	33
PID 2880 wrote to memory of 240	2880	big62293.exe	33
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 2880 wrote to memory of 1600	2880	big62293.exe	35
PID 1600 wrote to memory of 2124	1600	big62293.exe	36
PID 1600 wrote to memory of 2124	1600	big62293.exe	36
PID 1600 wrote to memory of 2124	1600	big62293.exe	36
PID 1600 wrote to memory of 2124	1600	big62293.exe	36
PID 1600 wrote to memory of 2372	1600	big62293.exe	38
PID 1600 wrote to memory of 2372	1600	big62293.exe	38
PID 1600 wrote to memory of 2372	1600	big62293.exe	38
PID 1600 wrote to memory of 2372	1600	big62293.exe	38

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\INVOICE.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2732

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Roaming\big62293.exe
  "C:\Users\Admin\AppData\Roaming\big62293.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\big62293.exe"
    3⤵
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:240
- - C:\Users\Admin\AppData\Roaming\big62293.exe
    "C:\Users\Admin\AppData\Roaming\big62293.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1600
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp35FE.tmp"
      4⤵
      Creates scheduled task(s)
      PID:2124
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "DDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp366D.tmp"
      4⤵
      Creates scheduled task(s)
      PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

T1203

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp35FE.tmp

Filesize
1KB

MD5
8bea017d4abf60466095032ca4584643

SHA1
2c080ff74f4d12152e2360d3e5a8e773448697a6

SHA256
37f772288b75d966cb376824b9a3bc5b224c7e7e5eb199249ddf4e147cf58f2a

SHA512
f90b198043ceab4229f30c73614c787e0418be0253889e430c62f162d3e3ff98fa12c983ccb08dfe2ccb2088559644a4e73b7c482fab3c70d43b05542c9113d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp366D.tmp

Filesize
1KB

MD5
8e2d5fba24ae8a54087d8e6cadc188c1

SHA1
548555025543b4773b8f36301f5fa5003e1c85dc

SHA256
f8a3739cca23897792b42a11a21adcce745201fa19f8d84ec66a6e0c5e519759

SHA512
9246583d7b08152cd73dc40254013e1ae4b8c93603dbb1f4e6b82624e14b134c59de6c8039b588f14075602768a388121e985f886322ae5fb9ec2eee94d4ea3d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

Filesize
20KB

MD5
c8275818df79a2c0178f5a45104f53c0

SHA1
ffe72da87b1c4fc315d647dd0fc35c4f5c9c9561

SHA256
ad730146aba1c1c70c2f61f1c534dc50b8d862211d74c1ece75dcf5dfe1d5df1

SHA512
2b08d537da193b6683a96fbf685e5d860a7b5b04a06e1092b408393cdf176181e98ddbba2aac6e32fe45f7f70b5b9b1248a192c59b248930b9b6ae747aae5ed5

Download Submit
\Users\Admin\AppData\Roaming\big62293.exe

Filesize
658KB

MD5
1b5ad20b8a289ce7526dceea7c91f5f3

SHA1
447d20bdbc1aa6258b00949def3d2410409e4ea1

SHA256
ee58fa913b4f5d0527453664b762b848404c19c23369ab6c4c893d55adbdde4b

SHA512
83af90542f6470f5a712ca4bb0768341994567f50af030e169f5502f8ec5ddbe70ca7d33cae1f0ab50aba1f6d7101818302a84edb79b0cf79085fdc8e4183c31

Download Submit
memory/240-65-0x000000006A9F0000-0x000000006AF9B000-memory.dmp

Filesize
5.7MB

Download
memory/240-80-0x000000006A9F0000-0x000000006AF9B000-memory.dmp

Filesize
5.7MB

Download
memory/240-69-0x0000000002B90000-0x0000000002BD0000-memory.dmp

Filesize
256KB

Download
memory/240-71-0x0000000002B90000-0x0000000002BD0000-memory.dmp

Filesize
256KB

Download
memory/240-68-0x0000000002B90000-0x0000000002BD0000-memory.dmp

Filesize
256KB

Download
memory/240-67-0x000000006A9F0000-0x000000006AF9B000-memory.dmp

Filesize
5.7MB

Download
memory/1600-48-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-78-0x0000000000440000-0x000000000045E000-memory.dmp

Filesize
120KB

Download
memory/1600-98-0x0000000004A30000-0x0000000004A70000-memory.dmp

Filesize
256KB

Download
memory/1600-50-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1600-54-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-57-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-97-0x000000006B1C0000-0x000000006B8AE000-memory.dmp

Filesize
6.9MB

Download
memory/1600-60-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-63-0x000000006B1C0000-0x000000006B8AE000-memory.dmp

Filesize
6.9MB

Download
memory/1600-64-0x0000000004A30000-0x0000000004A70000-memory.dmp

Filesize
256KB

Download
memory/1600-44-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-95-0x0000000000DB0000-0x0000000000DC4000-memory.dmp

Filesize
80KB

Download
memory/1600-94-0x0000000000E00000-0x0000000000E2E000-memory.dmp

Filesize
184KB

Download
memory/1600-93-0x0000000000D90000-0x0000000000D9E000-memory.dmp

Filesize
56KB

Download
memory/1600-92-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/1600-91-0x0000000000D30000-0x0000000000D40000-memory.dmp

Filesize
64KB

Download
memory/1600-90-0x0000000000D20000-0x0000000000D34000-memory.dmp

Filesize
80KB

Download
memory/1600-77-0x00000000003F0000-0x00000000003FA000-memory.dmp

Filesize
40KB

Download
memory/1600-46-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1600-79-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/1600-89-0x0000000000D10000-0x0000000000D1E000-memory.dmp

Filesize
56KB

Download
memory/1600-88-0x0000000000CC0000-0x0000000000CCC000-memory.dmp

Filesize
48KB

Download
memory/1600-84-0x0000000000590000-0x00000000005A2000-memory.dmp

Filesize
72KB

Download
memory/1600-85-0x00000000005E0000-0x00000000005FA000-memory.dmp

Filesize
104KB

Download
memory/1600-86-0x00000000007E0000-0x00000000007EE000-memory.dmp

Filesize
56KB

Download
memory/1600-87-0x0000000000850000-0x0000000000862000-memory.dmp

Filesize
72KB

Download
memory/2876-82-0x000000007113D000-0x0000000071148000-memory.dmp

Filesize
44KB

Download
memory/2876-2-0x000000007113D000-0x0000000071148000-memory.dmp

Filesize
44KB

Download
memory/2876-0-0x000000002FE51000-0x000000002FE52000-memory.dmp

Filesize
4KB

Download
memory/2876-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2876-119-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2880-33-0x0000000001190000-0x000000000123A000-memory.dmp

Filesize
680KB

Download
memory/2880-34-0x000000006B240000-0x000000006B92E000-memory.dmp

Filesize
6.9MB

Download
memory/2880-35-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

Filesize
256KB

Download
memory/2880-40-0x0000000000580000-0x000000000059C000-memory.dmp

Filesize
112KB

Download
memory/2880-42-0x00000000005C0000-0x00000000005D2000-memory.dmp

Filesize
72KB

Download
memory/2880-43-0x00000000053F0000-0x000000000546A000-memory.dmp

Filesize
488KB

Download
memory/2880-59-0x000000006B240000-0x000000006B92E000-memory.dmp

Filesize
6.9MB

Download