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Analysis
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max time kernel
141s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20231025-en -
resource tags
arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system -
submitted
31/10/2023, 22:08
Static task
static1
Behavioral task
behavioral1
Sample
NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
Resource
win7-20231025-en
Behavioral task
behavioral2
Sample
NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
Resource
win10v2004-20231023-en
General
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Target
NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
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Size
58KB
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MD5
5a6f2bef8250643387465d7b88a73d00
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SHA1
36c16e4a6e1234c65a675a2c20a1542e1e759658
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SHA256
52c6f26d5b3c4221b662d94ccabf1074de5673f4d114ea195b7bd1b697b8c806
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SHA512
74d9bb86f5f46ece7ae9197fefd4ab2858e3b685d00984df8e4c4dcdb30c2c7211476a23ffdb9f7f07dc4eb00fad67043529a5ea7e5fc142da666bd5baaef9a2
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SSDEEP
384:+5rDuuOFpEauMLfQDb2pproT/z4m5m1GJE6Al6z8yXDTLhrwnT:MDcpEBMLfQcubV5wGE96YyXDTLdoT
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 2968 attrib.exe -
Deletes itself 1 IoCs
pid Process 2660 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 2352 zskhost.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\Debug\zskhost.exe NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe File opened for modification C:\Windows\Debug\zskhost.exe NEAS.5a6f2bef8250643387465d7b88a73d00_JC.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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Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2164 wrote to memory of 2968 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 28 PID 2164 wrote to memory of 2968 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 28 PID 2164 wrote to memory of 2968 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 28 PID 2164 wrote to memory of 2968 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 28 PID 2164 wrote to memory of 2660 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 31 PID 2164 wrote to memory of 2660 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 31 PID 2164 wrote to memory of 2660 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 31 PID 2164 wrote to memory of 2660 2164 NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe 31 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2968 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe"1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\zskhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:2968
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\NEAS5A~1.EXE > nul2⤵
- Deletes itself
PID:2660
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C:\Windows\Debug\zskhost.exeC:\Windows\Debug\zskhost.exe1⤵
- Executes dropped EXE
PID:2352
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD5a732b3f8576e022e4dd9e12c239c6c80
SHA1070c147e90ab6885940521c5596e99d4b14ace6f
SHA256423e8c9ce3d92052bcb2dc3e795dc38cf8e36915c5ce0bb134c39f94ea6d4102
SHA512aff24c8b4dabae7a91c0677bb0b89d05f334aaa87c9c267833eb20eb25d3a0cbb3c81511b47d880fec4dab40e5464831e1e12ae6d5ce5eafe944c5e9597b31d1
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Filesize
58KB
MD5a732b3f8576e022e4dd9e12c239c6c80
SHA1070c147e90ab6885940521c5596e99d4b14ace6f
SHA256423e8c9ce3d92052bcb2dc3e795dc38cf8e36915c5ce0bb134c39f94ea6d4102
SHA512aff24c8b4dabae7a91c0677bb0b89d05f334aaa87c9c267833eb20eb25d3a0cbb3c81511b47d880fec4dab40e5464831e1e12ae6d5ce5eafe944c5e9597b31d1