Resubmissions
31/10/2022, 22:55
221031-2wcfbadhf831/10/2022, 22:53
221031-2t11wsdhf2925/09/2022, 04:01
220925-elhg9adbc81015/09/2022, 10:54
220915-mzjapsgeej9Analysis
- max time kernel
91s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
15/09/2022, 10:54
Behavioral task
behavioral1
Sample
bgdwubmodm.dll
Resource
win7-20220812-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
bgdwubmodm.dll
Resource
win10v2004-20220812-en
8 signatures
150 seconds
Behavioral task
behavioral3
Sample
l4jb9w049j00h704k2exk46qooo.exe
Resource
win7-20220901-en
0 signatures
150 seconds
Behavioral task
behavioral4
Sample
l4jb9w049j00h704k2exk46qooo.exe
Resource
win10v2004-20220812-en
0 signatures
150 seconds
General
- Target bgdwubmodm.dll
- Size 10.3MB
- Sample220915-mzjapsgeej
- SHA256 3da15b7582aa2e324d7e8a18ca4610fb20f69985b09f1c1490e6a99dcde6e305
- MD5 186b119d39e666a41a602ff6c9605b70
- SHA1 99599a7c7620265b9e30dc1b7028b34ec274464c
- SHA512 be22de499169903b83d6c3c44c6368bda91de8ab636c331424e99cbe01b38cf593a08e293c5f57ab4a4fde9f2a032deef5d94c6664014f02f71a948af5e3ab75
- SSDEEP 196608:z11cSFf1gPigUZNY4QBvM602Nrbjlhmmm+j8C7q44KoORtSDtYUcV5znDYsE18FO:p1jUMNDskkrFhmmHwCWOoOHSDtYUcVRe
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe - Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe -
resource yara_rule behavioral2/memory/2688-134-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-135-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-136-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-137-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-138-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-139-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-140-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-141-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-142-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-143-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-144-0x00000000021B0000-0x0000000003D34000-memory.dmp themida behavioral2/memory/2688-145-0x00000000021B0000-0x0000000003D34000-memory.dmp themida -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 2688 rundll32.exe - Program crash 1 IoCs
pid pid_target Process procid_target 4772 2688 WerFault.exe 78 - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2688 rundll32.exe 2688 rundll32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2672 wrote to memory of 2688 2672 rundll32.exe 78 PID 2672 wrote to memory of 2688 2672 rundll32.exe 78 PID 2672 wrote to memory of 2688 2672 rundll32.exe 78
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bgdwubmodm.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2672 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\bgdwubmodm.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2688 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 7763⤵
- Program crash
PID:4772
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2688 -ip 26881⤵PID:3456