Analysis
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max time kernel
103s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
03/04/2025, 23:03
Static task
static1
Behavioral task
behavioral1
Sample
Employee Performance Report_pdf.exe
Resource
win10v2004-20250314-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20250314-en
General
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Target
$PLUGINSDIR/System.dll
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Size
12KB
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MD5
cff85c549d536f651d4fb8387f1976f2
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SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
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SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
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SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
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SSDEEP
192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
Malware Config
Signatures
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Program crash 1 IoCs
pid pid_target Process procid_target 3936 3636 WerFault.exe 89 -
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 3520 wrote to memory of 3636 3520 rundll32.exe 89 PID 3520 wrote to memory of 3636 3520 rundll32.exe 89 PID 3520 wrote to memory of 3636 3520 rundll32.exe 89
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:3520 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:3636 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 6123⤵
- Program crash
PID:3936
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3636 -ip 36361⤵PID:3456