Analysis
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max time kernel
91s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 09:06
Behavioral task
behavioral1
Sample
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe
Resource
win10v2004-20220901-en
General
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Target
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe
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Size
361KB
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MD5
11237374706a36f4f556e6afa6feec71
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SHA1
689f06cf6772a9bb6ea5eeb4764bf962f81a6080
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SHA256
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2
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SHA512
3084502dcc04451ee51ed820318cbed89f96f3c5bb6abcbddb4bb6526f913e61b5fee1ed7636ad12d16e17ee41d954516e2c18859afac39789ff441debaa9886
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SSDEEP
6144:EttBiR4jOsq9aEsiUscu5H2wXXDdGMzWdvV0ZkrrC7/Z8p4xpfgMS8GXelP:E04WoEsiUo5H2OXoMzwvV0GraGCp4Mu
Malware Config
Signatures
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ACProtect 1.3x - 1.4x DLL software 2 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule C:\Windows\SysWOW64\msinaz32.dll acprotect C:\Windows\SysWOW64\msinaz32.dll acprotect -
Processes:
resource yara_rule behavioral2/memory/4396-132-0x0000000000400000-0x000000000046B000-memory.dmp upx behavioral2/memory/4396-134-0x0000000000400000-0x000000000046B000-memory.dmp upx C:\Windows\SysWOW64\msinaz32.dll upx C:\Windows\SysWOW64\msinaz32.dll upx behavioral2/memory/5012-140-0x0000000010000000-0x0000000010086000-memory.dmp upx behavioral2/memory/4396-141-0x0000000000400000-0x000000000046B000-memory.dmp upx -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 5012 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSIDLL = "C:\\Windows\\SysWOW64\\rundll32.exe msinaz32.dll,rbNCrnSwdubl" a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in System32 directory 2 IoCs
Processes:
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exedescription ioc process File created C:\Windows\SysWOW64\msinaz32.dll a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe File opened for modification C:\Windows\SysWOW64\msinaz32.dll a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 788 4396 WerFault.exe a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exepid process 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exedescription pid process target process PID 4396 wrote to memory of 5012 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe rundll32.exe PID 4396 wrote to memory of 5012 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe rundll32.exe PID 4396 wrote to memory of 5012 4396 a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe"C:\Users\Admin\AppData\Local\Temp\a290d756e3d27c0e84b07b316b228568b618a092aae6ff4abdf0f8a16e2db5b2.exe"1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe msinaz32.dll,rbNCrnSwdubl2⤵
- Loads dropped DLL
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4396 -s 6842⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4396 -ip 43961⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Windows\SysWOW64\msinaz32.dllFilesize
172KB
MD5f1495e1d8577d92f47d842b5a13bbbe4
SHA1d16c0db41258901fa83b16fedaaaaedbe7cee1d3
SHA256149ac596ec3e31105008cb71178102cd118dbe6b4e3cac52305d9a4fe53f4c9f
SHA5124543cd7776fe717c9e16c46834d31828f8d30bde30576b056b5d4503a1896402c98be8dfee2f6bd69d93f1b2f21bd57c62b0fbdaac14135707fe9410a67f36df
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C:\Windows\SysWOW64\msinaz32.dllFilesize
172KB
MD5f1495e1d8577d92f47d842b5a13bbbe4
SHA1d16c0db41258901fa83b16fedaaaaedbe7cee1d3
SHA256149ac596ec3e31105008cb71178102cd118dbe6b4e3cac52305d9a4fe53f4c9f
SHA5124543cd7776fe717c9e16c46834d31828f8d30bde30576b056b5d4503a1896402c98be8dfee2f6bd69d93f1b2f21bd57c62b0fbdaac14135707fe9410a67f36df
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memory/4396-132-0x0000000000400000-0x000000000046B000-memory.dmpFilesize
428KB
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memory/4396-133-0x00000000022A0000-0x00000000022FA000-memory.dmpFilesize
360KB
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memory/4396-134-0x0000000000400000-0x000000000046B000-memory.dmpFilesize
428KB
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memory/4396-135-0x0000000002830000-0x00000000028B6000-memory.dmpFilesize
536KB
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memory/4396-138-0x0000000002830000-0x00000000028B6000-memory.dmpFilesize
536KB
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memory/4396-141-0x0000000000400000-0x000000000046B000-memory.dmpFilesize
428KB
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memory/5012-136-0x0000000000000000-mapping.dmp
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memory/5012-140-0x0000000010000000-0x0000000010086000-memory.dmpFilesize
536KB