Analysis
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max time kernel
141s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20231020-en -
resource tags
arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system -
submitted
11/11/2023, 10:45
Static task
static1
Behavioral task
behavioral1
Sample
e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe
Resource
win10v2004-20231020-en
General
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Target
e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe
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Size
194KB
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MD5
a65a1b9b45b85f5b8b9fd09bf8295511
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SHA1
977bf54b60813c6a429d24f50839646d0ae83fba
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SHA256
e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76
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SHA512
f830fdde7327af98146177d9ada645caf10132cb2f47f24a564d3c38e6b15496b631c58974cd5ca70206010459ff5b20b84fc7901ccf99158dcd6f96a7a57427
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SSDEEP
6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOU:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXx
Malware Config
Signatures
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Deletes itself 1 IoCs
pid Process 2856 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 2284 zskhost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Debug\zskhost.exe e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe File opened for modification C:\Windows\Debug\zskhost.exe e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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
description pid Process Token: SeIncBasePriorityPrivilege 2516 e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2516 wrote to memory of 2856 2516 e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe 29 PID 2516 wrote to memory of 2856 2516 e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe 29 PID 2516 wrote to memory of 2856 2516 e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe 29 PID 2516 wrote to memory of 2856 2516 e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe"C:\Users\Admin\AppData\Local\Temp\e9fdc7c9f967ae208a63fffd55b08876761bfe4d6b769fb442b1e45289879e76.exe"1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\E9FDC7~1.EXE > nul2⤵
- Deletes itself
PID:2856
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C:\Windows\Debug\zskhost.exeC:\Windows\Debug\zskhost.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2284
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
194KB
MD5515c4a7f4f89c052c885e5fdad968a9d
SHA1828acc7108ee8b775209e7732b0aa762ab24b02e
SHA2563394f9556c233cd3293f2f0dea0b1b0cd2a458386064fb921cd69855b92bf77f
SHA5123c68842747a0acad8f42cba6fe16f3410fa3909bba9572ea2303b33d5d45f316e022f5075faf6227b0a797c851fd8113de740198f44aef38799f1426dac63482
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Filesize
194KB
MD5515c4a7f4f89c052c885e5fdad968a9d
SHA1828acc7108ee8b775209e7732b0aa762ab24b02e
SHA2563394f9556c233cd3293f2f0dea0b1b0cd2a458386064fb921cd69855b92bf77f
SHA5123c68842747a0acad8f42cba6fe16f3410fa3909bba9572ea2303b33d5d45f316e022f5075faf6227b0a797c851fd8113de740198f44aef38799f1426dac63482