Analysis
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max time kernel
104s -
max time network
218s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
26/03/2025, 15:54
Static task
static1
Behavioral task
behavioral1
Sample
HOLIDAY ADVISORY_pdf.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
HOLIDAY ADVISORY_pdf.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240903-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20250314-en
General
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Target
$PLUGINSDIR/System.dll
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Size
11KB
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MD5
6f5257c0b8c0ef4d440f4f4fce85fb1b
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SHA1
b6ac111dfb0d1fc75ad09c56bde7830232395785
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SHA256
b7ccb923387cc346731471b20fc3df1ead13ec8c2e3147353c71bb0bd59bc8b1
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SHA512
a3cc27f1efb52fb8ecda54a7c36ada39cefeabb7b16f2112303ea463b0e1a4d745198d413eebb3551e012c84a20dcdf4359e511e51bc3f1a60b13f1e3bad1aa8
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SSDEEP
96:zPDYcJ+nx4vVp76JX7zBlkCg21Fxz4THxtrqw1at0JgwLEjo+OB3yUVCdl/wNj+y:zPtkuWJX7zB3kGwfy0nyUVsxCjOM61u
Malware Config
Signatures
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Program crash 1 IoCs
pid pid_target Process procid_target 5940 5436 WerFault.exe 85 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3084 wrote to memory of 5436 3084 rundll32.exe 85 PID 3084 wrote to memory of 5436 3084 rundll32.exe 85 PID 3084 wrote to memory of 5436 3084 rundll32.exe 85
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3084 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:5436 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5436 -s 6123⤵
- Program crash
PID:5940
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5436 -ip 54361⤵PID:5024