Analysis
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max time kernel
95s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05/10/2024, 01:53
Static task
static1
Behavioral task
behavioral1
Sample
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
Resource
win10v2004-20240802-en
General
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Target
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll
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Size
544KB
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MD5
003dbddc2b4d41825a920081a907eaf0
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SHA1
166ff4158ec03a589660017ed0ba35c0ca31e79e
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SHA256
b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64
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SHA512
09fe14395b4a0b0cf2413403701d639f6a0b23224fc80f96177199b80fb92eaed5168cc0a91689111f7967f5044c7733a277b74f20553b281900cf1b44277f6f
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SSDEEP
12288:DhpUrEIZJqr1AkBWwNa5R0EYl795/amaX3QXaPKU5gqKQ:D/jG01NHXaPOvQ
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2008 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Program crash 2 IoCs
pid pid_target Process procid_target 3220 2716 WerFault.exe 82 1648 2008 WerFault.exe 83 -
System Location Discovery: System Language Discovery 1 TTPs 2 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4612 wrote to memory of 2716 4612 rundll32.exe 82 PID 4612 wrote to memory of 2716 4612 rundll32.exe 82 PID 4612 wrote to memory of 2716 4612 rundll32.exe 82 PID 2716 wrote to memory of 2008 2716 rundll32.exe 83 PID 2716 wrote to memory of 2008 2716 rundll32.exe 83 PID 2716 wrote to memory of 2008 2716 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:4612 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b9d10140a4b19ca6327d7e319cf9bd88c897cdb7440b08bb9a82aebae1817e64N.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2008 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 4004⤵
- Program crash
PID:1648
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 6363⤵
- Program crash
PID:3220
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2716 -ip 27161⤵PID:1392
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2008 -ip 20081⤵PID:2356
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
84KB
MD5797ea3998080a8d64bd071ac749c2285
SHA124e7d2db6d27265a936c72b16a14b31910a55df6
SHA256cc2bd6be44d951965e960882aa128f0aa18e805e33a4cf99952ca5387007a1a5
SHA5128656020cd52e46902058ce6eca6d823e8a84228cef10c30af05c48353c159e510baed333e19c29d25bd9e6e0a5bcdcfa1dcf053cf8544ad4bfe11392efdc088c