Analysis
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max time kernel
28s -
max time network
138s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
26-03-2023 06:11
Behavioral task
behavioral1
Sample
impvqfag.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
General
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Target
impvqfag.exe
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Size
168KB
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MD5
967461d7eaa06cceada0df6b90dc2248
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SHA1
9b0f168f38e990dade84905f8b294e0c83a1a93f
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SHA256
d6d03b39851da54f93d35a89fa243ebc01b45b6f7ed5590605d64bda89fd293d
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SHA512
117873b1ca7cf78f4579611f16bc5479b12a63acfec99bd3021b67de5336254337f7c9e5f8fc202dc26109ca2dd3f1e689d15e989662a5cf1dac45d1322aafff
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SSDEEP
3072:KDBXmfDngnSzsevIJqg5IOQI0HQFdWjhf7ybH0WRgg/:EXmfDgbGg5IOQIAhTybDgg
Malware Config
Signatures
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Deletes itself 1 IoCs
Processes:
cmd.exepid process 1700 cmd.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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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
impvqfag.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 impvqfag.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString impvqfag.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1856 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
impvqfag.exepid process 1376 impvqfag.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
impvqfag.exedescription pid process Token: SeDebugPrivilege 1376 impvqfag.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
impvqfag.execmd.exedescription pid process target process PID 1376 wrote to memory of 1700 1376 impvqfag.exe cmd.exe PID 1376 wrote to memory of 1700 1376 impvqfag.exe cmd.exe PID 1376 wrote to memory of 1700 1376 impvqfag.exe cmd.exe PID 1376 wrote to memory of 1700 1376 impvqfag.exe cmd.exe PID 1700 wrote to memory of 1856 1700 cmd.exe timeout.exe PID 1700 wrote to memory of 1856 1700 cmd.exe timeout.exe PID 1700 wrote to memory of 1856 1700 cmd.exe timeout.exe PID 1700 wrote to memory of 1856 1700 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\impvqfag.exe"C:\Users\Admin\AppData\Local\Temp\impvqfag.exe"1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /C timeout 5 & del "C:\Users\Admin\AppData\Local\Temp\impvqfag.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 53⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1376-54-0x0000000000610000-0x0000000000650000-memory.dmpFilesize
256KB