Analysis
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max time kernel
120s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
25/09/2024, 18:43
Behavioral task
behavioral1
Sample
b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll
Resource
win7-20240903-en
windows7-x64
8 signatures
120 seconds
Behavioral task
behavioral2
Sample
b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll
Resource
win10v2004-20240802-en
windows10-2004-x64
9 signatures
120 seconds
General
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Target
b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll
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Size
118KB
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MD5
eae8fbfe3746e73089d4301f762e3970
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SHA1
5e5da4c2f64a1f57e524bcf9d81f58154ef9bbf6
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SHA256
b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438
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SHA512
6510efddf29afd8af9343b48c364499972944871be36300353d72d7e13f8c23c764d9ab0826c233868470e1e29e6ee107b280570f2dcec54dd5b6423aed5f1d1
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SSDEEP
1536:78DDS7LFiLjnavBSsOnOonMaPJtSNBeAt94nouy8Af206g:eIFYjnav4bnOAMaWeAt2outKG
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 4396 rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
pid Process 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe -
resource yara_rule behavioral2/memory/2320-0-0x0000000010000000-0x000000001001F000-memory.dmp upx behavioral2/files/0x00090000000234ab-4.dat upx behavioral2/memory/2320-6-0x0000000010000000-0x000000001001F000-memory.dmp upx behavioral2/memory/4396-7-0x0000000010000000-0x000000001001F000-memory.dmp upx -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\msisue.dll rundll32.exe File opened for modification C:\Windows\msisue.dll rundll32.exe -
Access Token Manipulation: Create Process with Token 1 TTPs 1 IoCs
pid Process 4396 rundll32.exe -
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 rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7B3AC3FA-B695-41b6-BAA0-860EB5EB6FD6}\{F69EB73C-700A-42c9-8F9D-E8C4ABC27EF3} = "b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll,1314612079,-85730467,-1814625877" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32 rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9} rundll32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe 4396 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3964 wrote to memory of 2320 3964 rundll32.exe 82 PID 3964 wrote to memory of 2320 3964 rundll32.exe 82 PID 3964 wrote to memory of 2320 3964 rundll32.exe 82 PID 2320 wrote to memory of 4396 2320 rundll32.exe 83 PID 2320 wrote to memory of 4396 2320 rundll32.exe 83 PID 2320 wrote to memory of 4396 2320 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3964 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438N.dll,#12⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Windows\SysWOW64\rundll32.exerundll32 "C:\Windows\msisue.dll",_RunAs@163⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Access Token Manipulation: Create Process with Token
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4396
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
118KB
MD5eae8fbfe3746e73089d4301f762e3970
SHA15e5da4c2f64a1f57e524bcf9d81f58154ef9bbf6
SHA256b4506ff88bb8bc6cfb8eeb9da6991e009fbd99e393c132604cfb50d15b209438
SHA5126510efddf29afd8af9343b48c364499972944871be36300353d72d7e13f8c23c764d9ab0826c233868470e1e29e6ee107b280570f2dcec54dd5b6423aed5f1d1