Analysis
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max time kernel
93s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
16-12-2024 03:38
Static task
static1
Behavioral task
behavioral1
Sample
b164e643c2d8fdb91002dbc3cb445d39e54246e2373a9756f2280ad5ff585b74N.dll
Resource
win7-20240903-en
General
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Target
b164e643c2d8fdb91002dbc3cb445d39e54246e2373a9756f2280ad5ff585b74N.dll
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Size
256KB
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MD5
b838ca54e54cd92aaeaed413b57a43c0
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SHA1
75910bf07c400d133168de2e529ae17495addcae
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SHA256
b164e643c2d8fdb91002dbc3cb445d39e54246e2373a9756f2280ad5ff585b74
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SHA512
dc1c604a162e0a6ddbb28f65d461fb45d421c25378aedc2af6881ac77b5a000e87680acaaa0c08aa035101bf9054b232d6b1c48130fe5869fa73ae9194900bb4
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SSDEEP
3072:QKomU8Ty/v/eSPZwozPixqI13GKkjPmIb8GTuXHHetkqcqvnhzduNC:foSTE4xqI+P5TuXHHel/VgNC
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3724 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
resource yara_rule behavioral2/files/0x000c000000023b2e-3.dat upx behavioral2/memory/3724-4-0x0000000000400000-0x000000000045B000-memory.dmp upx behavioral2/memory/3724-7-0x0000000000400000-0x000000000045B000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 5108 3724 WerFault.exe 84 -
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 rundll32mgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1040 wrote to memory of 2344 1040 rundll32.exe 83 PID 1040 wrote to memory of 2344 1040 rundll32.exe 83 PID 1040 wrote to memory of 2344 1040 rundll32.exe 83 PID 2344 wrote to memory of 3724 2344 rundll32.exe 84 PID 2344 wrote to memory of 3724 2344 rundll32.exe 84 PID 2344 wrote to memory of 3724 2344 rundll32.exe 84
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b164e643c2d8fdb91002dbc3cb445d39e54246e2373a9756f2280ad5ff585b74N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1040 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b164e643c2d8fdb91002dbc3cb445d39e54246e2373a9756f2280ad5ff585b74N.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3724 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3724 -s 2644⤵
- Program crash
PID:5108
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3724 -ip 37241⤵PID:116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
105KB
MD5dfb5daabb95dcfad1a5faf9ab1437076
SHA14a199569a9b52911bee7fb19ab80570cc5ff9ed1
SHA25654282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0
SHA5125d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8