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Analysis
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max time kernel
145s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
10/10/2023, 19:47
Static task
static1
Behavioral task
behavioral1
Sample
NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe
Resource
win10v2004-20230915-en
General
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Target
NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe
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Size
58KB
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MD5
b9d3a4cc85f9a26015fe4479d0812e49
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SHA1
d34eb58d54d120c7243c882d54baa96e75e2b06a
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SHA256
b4ef2c05e5bda32c7ac5d7e2a6f2bcb9df4727c7dd44f8e86ee0e32f2a54a05f
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SHA512
cfd4630d71900487358df8d3f938cca5138db90a3dac1b02e4868e81308942b23dafd3d7826cccacbca836a45dd740534fd959087eb2f5367d59c559ba5d6f3d
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SSDEEP
768:MDcpEBMLfQcubV5wGE96YyXDTLdNSSS583:MDcfLfIbtEbyXfZb
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 3060 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1045988481-1457812719-2617974652-1000\Control Panel\International\Geo\Nation NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe -
Executes dropped EXE 1 IoCs
pid Process 4040 riyhost.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\Debug\riyhost.exe NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe File opened for modification C:\Windows\Debug\riyhost.exe NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe File opened for modification C:\Windows\Debug\riyhost.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 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4400 wrote to memory of 3060 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 85 PID 4400 wrote to memory of 3060 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 85 PID 4400 wrote to memory of 3060 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 85 PID 4400 wrote to memory of 4168 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 89 PID 4400 wrote to memory of 4168 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 89 PID 4400 wrote to memory of 4168 4400 NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe 89 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 3060 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.b9d3a4cc85f9a26015fe4479d0812e49_JC.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4400 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\riyhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:3060
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\NEASB9~1.EXE > nul2⤵PID:4168
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C:\Windows\Debug\riyhost.exeC:\Windows\Debug\riyhost.exe1⤵
- Executes dropped EXE
PID:4040
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD5d94f17009f3041774d1e9371e021916a
SHA123d0323948a3e52dc73a420bbde82ed1ba81ffba
SHA256dde5d5e13526efc4cec62257822844b89f0f4d728d4633059734112bacd3d784
SHA512a48f2c24907d494114f7b3a26c30c83a90740dab95b7b953f97173f6d49ea559d6d671639c7ffaf369384ae2eb49095aa3a632493720004ee8e6c9dd60ae1d23
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Filesize
58KB
MD5d94f17009f3041774d1e9371e021916a
SHA123d0323948a3e52dc73a420bbde82ed1ba81ffba
SHA256dde5d5e13526efc4cec62257822844b89f0f4d728d4633059734112bacd3d784
SHA512a48f2c24907d494114f7b3a26c30c83a90740dab95b7b953f97173f6d49ea559d6d671639c7ffaf369384ae2eb49095aa3a632493720004ee8e6c9dd60ae1d23