Analysis
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max time kernel
120s -
max time network
93s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
31/10/2024, 04:29
Behavioral task
behavioral1
Sample
f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe
Resource
win10v2004-20241007-en
General
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Target
f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe
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Size
15KB
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MD5
f662c9c1cdf777db6a73dd0c2eef4b40
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SHA1
61bad3b005cc136d514cd3ec5ae86428142bc1ad
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SHA256
f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58
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SHA512
d1d9e0b046f04a0c8cb02e3402866440a3373c9bdc431fdde01dfd552735a9dbbac96dcc16af0e4d9a2d07a4a78f29526e5fc25a4e03c74be808dc3a6b4bb944
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SSDEEP
384:IO3qdXlIQV0YXd45xuYiMcRWnPbeVGWLwbbb9:IO3EVdV0YXd4DuicNV3C
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.
pid Process 2544 attrib.exe -
Deletes itself 1 IoCs
pid Process 2492 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 1588 iuyhost.exe -
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
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resource yara_rule behavioral1/memory/328-0-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/files/0x000b000000012029-3.dat upx behavioral1/memory/328-6-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/memory/1588-7-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/memory/1588-10-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/memory/1588-13-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/memory/1588-16-0x0000000000400000-0x0000000000414000-memory.dmp upx -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\Debug\iuyhost.exe f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe File opened for modification C:\Windows\Debug\iuyhost.exe attrib.exe File created C:\Windows\Debug\iuyhost.exe f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language iuyhost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language attrib.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 328 wrote to memory of 2544 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 30 PID 328 wrote to memory of 2544 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 30 PID 328 wrote to memory of 2544 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 30 PID 328 wrote to memory of 2544 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 30 PID 328 wrote to memory of 2492 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 33 PID 328 wrote to memory of 2492 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 33 PID 328 wrote to memory of 2492 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 33 PID 328 wrote to memory of 2492 328 f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe 33 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2544 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe"C:\Users\Admin\AppData\Local\Temp\f9aefb1b37168ea33f607f053bbc7b7d2113ca98260b5be9627cd77cbe560f58N.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:328 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\iuyhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Views/modifies file attributes
PID:2544
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F9AEFB~1.EXE > nul2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2492
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C:\Windows\Debug\iuyhost.exeC:\Windows\Debug\iuyhost.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1588
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
15KB
MD52aa6f27b55fadf142b533db785a22647
SHA11921dcd93a69896eb466dda650bd52402be8e815
SHA256942df5db5279dd708a7b777e2ff3ee6c746913e5871b825dd9b209db1cc338ad
SHA512f05cab0a08f82be1040c2732d982e2d186f8be86a710b7decd950a0e5c710b6f755e954e231a8528e2ff85e15f8f50b71201959bc22aa7827a7070e2acab9e0c