Resubmissions
22/08/2024, 14:53
240822-r9gxvavhpn322/08/2024, 14:49
240822-r631xasfrh522/08/2024, 14:35
240822-ryadmasckd9Analysis
- max time kernel
1466s - max time network
1479s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system - submitted
22/08/2024, 14:35
Static task
static1
Behavioral task
behavioral1
Sample
capcut_capcutpc_invitefission_1.2.4_installer (1).exe
Resource
win11-20240802-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/BgWorker.dll
Resource
win11-20240802-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20240802-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/deviceregister_shared.dll
Resource
win11-20240802-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/downloader_nsis_plugin.dll
Resource
win11-20240802-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/shell_downloader.dll
Resource
win11-20240802-en
General
- Target $PLUGINSDIR/BgWorker.dll
- Size 2KB
- Sample240822-ryadmasckd
- SHA256 50f735ab8f3473423e6873d628150bbc0777be7b4f6405247cddf22bb00fb6be
- MD5 33ec04738007e665059cf40bc0f0c22b
- SHA1 4196759a922e333d9b17bda5369f14c33cd5e3bc
- SHA512 2318b01f0c2f2f021a618ca3e6e5c24a94df5d00154766b77160203b8b0a177c8581c7b688ffe69be93a69bc7fd06b8a589844d42447f5060fb4bcf94d8a9aef
- MD5 SHA1 SHA512
Malware Config
Signatures
- Program crash 1 IoCs
pid pid_target Process procid_target 2116 1216 WerFault.exe 81 - 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 1980 wrote to memory of 1216 1980 rundll32.exe 81 PID 1980 wrote to memory of 1216 1980 rundll32.exe 81 PID 1980 wrote to memory of 1216 1980 rundll32.exe 81
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1980 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#12⤵
- System Location Discovery: System Language Discovery
PID:1216 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1216 -s 4523⤵
- Program crash
PID:2116
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1216 -ip 12161⤵PID:3840