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Analysis
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max time kernel
148s -
max time network
159s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
11/10/2023, 19:30
Static task
static1
Behavioral task
behavioral1
Sample
1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
Resource
win10v2004-20230915-en
General
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Target
1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe
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Size
198KB
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MD5
2b2b2cb2b03c3536bd0799beaed21ea3
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SHA1
eca02c9c6e9131c6e4a3a69b4680e2be5a298fff
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SHA256
1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f
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SHA512
d504066ac6683da2a309055cce3c18d3b5dec9e62eb842a8403ca919d3431e9023f89e5c9ebb23e9d01623091210d80e45340ff077736db5f2c4882f42598de6
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SSDEEP
6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOo:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXX5
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 2252 zskhost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\Debug\zskhost.exe 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe File opened for modification C:\Windows\Debug\zskhost.exe 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.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 2076 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2076 wrote to memory of 2620 2076 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe 29 PID 2076 wrote to memory of 2620 2076 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe 29 PID 2076 wrote to memory of 2620 2076 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe 29 PID 2076 wrote to memory of 2620 2076 1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe"C:\Users\Admin\AppData\Local\Temp\1a8313a18bf33e53d0d9f4cb255ad260490b511732f04bd8c1b5aa5bcbabca5f.exe"1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1A8313~1.EXE > nul2⤵PID:2620
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C:\Windows\Debug\zskhost.exeC:\Windows\Debug\zskhost.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2252
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
198KB
MD579ea5cd3debfa51260539d89fab55afa
SHA11cf71635b91164c4cbaed1988af75be949d4d1d2
SHA256bd95dfcf92728a649877c49ac1fc117c1e03c023c3debb0ba4f49acde4e484c7
SHA51283feedbb07cd0e7b674ce5f605ae7fd5d288acb3b69f516426c4c9d3585eaeabdbc8dce8d16fba7da272c38d8408225e1177c688a57303ff0cc41493219f8b4c