Analysis
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max time kernel
174s -
max time network
179s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
14/10/2023, 10:01
Static task
static1
Behavioral task
behavioral1
Sample
NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll
Resource
win7-20230831-en
windows7-x64
Behavioral task
behavioral2
Sample
NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll
Resource
win10v2004-20230915-en
windows10-2004-x64
General
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Target
NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll
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Size
25KB
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MD5
0465a6b8d40c8a81f983baa94dd2bc20
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SHA1
c8273bb4e4ce24f9e242bd71381a6cced672ee8f
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SHA256
200b498de73fed1259f9268d6f0e75f8079ea4634f98864d335a342a735c1f1a
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SHA512
6ade7bbcc3166e1e7062cb149f727a0b9aad552d838b94484aba62de97d13449d90c21f516ba3fe41d4c92909266da596e0a777f7ec0dc33f718d682d7fd5ebd
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SSDEEP
768:VrHFI0/T/ltj9LEPgf2cTeXsulEt8f30MFseM:pHFJ3pLPf2qeXsoFFM
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 2664 rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
pid Process 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\msvcr.dll rundll32.exe File opened for modification C:\Windows\msvcr.dll rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process 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 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} = "NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll,1285097749,1563368310,-1814625877" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InProcServer32 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe 2664 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1484 wrote to memory of 4800 1484 rundll32.exe 85 PID 1484 wrote to memory of 4800 1484 rundll32.exe 85 PID 1484 wrote to memory of 4800 1484 rundll32.exe 85 PID 4800 wrote to memory of 2664 4800 rundll32.exe 87 PID 4800 wrote to memory of 2664 4800 rundll32.exe 87 PID 4800 wrote to memory of 2664 4800 rundll32.exe 87
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1484 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\NEAS.0465a6b8d40c8a81f983baa94dd2bc20_JC.dll,#12⤵
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4800 -
C:\Windows\SysWOW64\rundll32.exerundll32 "C:\Windows\msvcr.dll",_RunAs@03⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2664
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
25KB
MD50465a6b8d40c8a81f983baa94dd2bc20
SHA1c8273bb4e4ce24f9e242bd71381a6cced672ee8f
SHA256200b498de73fed1259f9268d6f0e75f8079ea4634f98864d335a342a735c1f1a
SHA5126ade7bbcc3166e1e7062cb149f727a0b9aad552d838b94484aba62de97d13449d90c21f516ba3fe41d4c92909266da596e0a777f7ec0dc33f718d682d7fd5ebd
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Filesize
25KB
MD50465a6b8d40c8a81f983baa94dd2bc20
SHA1c8273bb4e4ce24f9e242bd71381a6cced672ee8f
SHA256200b498de73fed1259f9268d6f0e75f8079ea4634f98864d335a342a735c1f1a
SHA5126ade7bbcc3166e1e7062cb149f727a0b9aad552d838b94484aba62de97d13449d90c21f516ba3fe41d4c92909266da596e0a777f7ec0dc33f718d682d7fd5ebd