Analysis
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max time kernel
111s -
max time network
94s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
14-11-2024 02:21
Static task
static1
Behavioral task
behavioral1
Sample
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe
Resource
win10v2004-20241007-en
General
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Target
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe
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Size
75KB
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MD5
bc6b454fd9aa7c4bed3337850e889490
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SHA1
f9cbf696ce757f0a1146f2f77fc7143766a382f1
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SHA256
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706ac
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SHA512
554c1304361bf8d669dd02462bf5b70e65659d04a2a56683fb9991436f8988d349d558e6b99853ed892b84a71597063d37423201d0ff2f08a58a2a5c6513c011
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SSDEEP
768:bDcpEBlLfQcubgEp1Ayk96XyXXPdtldE9aHNWnnnl000e999vddddIyyyOwkkkkT:bDcWLfIbgEp10gyX/dtnTHNWnnn6Y
Malware Config
Signatures
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Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
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Deletes itself 1 IoCs
Processes:
cmd.exepid Process 2980 cmd.exe -
Executes dropped EXE 1 IoCs
Processes:
zskhost.exepid Process 3024 zskhost.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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Drops file in Windows directory 3 IoCs
Processes:
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exeattrib.exedescription ioc Process File created C:\Windows\Debug\zskhost.exe 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe File opened for modification C:\Windows\Debug\zskhost.exe 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe File opened for modification C:\Windows\Debug\zskhost.exe attrib.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exeattrib.exezskhost.execmd.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language zskhost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
zskhost.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 zskhost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz zskhost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exedescription pid Process Token: SeIncBasePriorityPrivilege 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exedescription pid Process procid_target PID 2812 wrote to memory of 2928 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 30 PID 2812 wrote to memory of 2928 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 30 PID 2812 wrote to memory of 2928 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 30 PID 2812 wrote to memory of 2928 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 30 PID 2812 wrote to memory of 2980 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 33 PID 2812 wrote to memory of 2980 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 33 PID 2812 wrote to memory of 2980 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 33 PID 2812 wrote to memory of 2980 2812 49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe 33 -
Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe"C:\Users\Admin\AppData\Local\Temp\49cc4a9b9c6a3ffab8832a6f41b8a1ccc6025d7cc1e948025c9e24eb921706acN.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\zskhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2928
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\49CC4A~1.EXE > nul2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2980
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C:\Windows\Debug\zskhost.exeC:\Windows\Debug\zskhost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:3024
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
75KB
MD5e061cef12b3a10e54973fbf81e688ccd
SHA17c12d0f08c738f183bd3f3d195d567486f8e2529
SHA2565969848a1cd52978c8c2da4452b6d0d2b2fad928d407dde419e16ec4f7887b3a
SHA5124c58e02944ca90181e8a71cbff888ffa30228f6196a7bd9421bac26b07ee649b8d0df6497b068fd2b3368d709d1c17d60f328cf716b2413d54fa90a9628e6745