Analysis
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max time kernel
94s -
max time network
135s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2024 12:57
Static task
static1
Behavioral task
behavioral1
Sample
4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe
Resource
win7-20241010-en
General
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Target
4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe
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Size
60KB
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MD5
33c97f302b62404d9c4e22d3797230bb
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SHA1
3bd9acec1077b777e3a2712ade0ce22f06da97f1
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SHA256
4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4
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SHA512
cafc0113e0ddb94ec98746cb91ed4304794ab6f9b940a7c32d6bf32cd14a35415eb3c7da6019ed2736402cb9beca7a0a6a0623e88f9bd78c6d15eeac2158f222
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SSDEEP
768:n5mhew0GpSyMe6hwUkdwJzh+qciaQRENEzxZbARtR06g2wqp4YPeznellmqGwxPB:nK0GjMeQG3iaQREuVZ6ro29p4YxbKdG
Malware Config
Extracted
urelas
218.54.47.76
218.54.47.77
218.54.47.74
Signatures
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Urelas family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe -
Executes dropped EXE 1 IoCs
Processes:
biudfw.exepid process 1840 biudfw.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 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
biudfw.execmd.exe4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language biudfw.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exedescription pid process target process PID 3632 wrote to memory of 1840 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe biudfw.exe PID 3632 wrote to memory of 1840 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe biudfw.exe PID 3632 wrote to memory of 1840 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe biudfw.exe PID 3632 wrote to memory of 2704 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe cmd.exe PID 3632 wrote to memory of 2704 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe cmd.exe PID 3632 wrote to memory of 2704 3632 4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe"C:\Users\Admin\AppData\Local\Temp\4d0607085b086c0998c07ee05ec1e6b21681f77b9fb56f4f3b84f56bc6a343f4.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3632 -
C:\Users\Admin\AppData\Local\Temp\biudfw.exe"C:\Users\Admin\AppData\Local\Temp\biudfw.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1840
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "2⤵
- System Location Discovery: System Language Discovery
PID:2704
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD597950cb74fe9357a0375f25ee9b6b043
SHA1b7b0897d292b8f28ade19445201e2cbcbfd2ea78
SHA256f2480c725731d5a4e55cbd32338a3b708b7a2b5a9cd476a38996a4d87fac9e44
SHA51283a03e3354da6c17dcf77e0fb04abf6c166f7e5351b72fd0dbdd9ad0f76437cded46fe6f5140d0803e970427eb2dcc96d26a8684b3b0c9717b8c674b58c9c74f
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Filesize
512B
MD555e10a9af74d3f3fa5ae3cb7ff5ad9d4
SHA1449221fd8d7196a54de2bd583625d8d1b64db56a
SHA256a945a44cfe50423c01f26a16445ed177a347052e791364a9cb7de6bcaa18f3c1
SHA5124af5ba74467b4c61302ea9571f19346c05f911843f2c6153fcd9a7340f9bc6e1f8867cdb72ec7ba0dc4930199aa5c302711ad5da9fd35241839418f6e70a515a
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Filesize
338B
MD59221763c43b505386a0961002dc42795
SHA12ba91ca049972187c5f7370bcd6919fce53c9add
SHA2564a9a554ffa29d3469e1e9fdf195ad5356d0e78ca194abfd122694d9ed60fc7ce
SHA5127a92c104bd360043c9970b8519ae316877de72821268848e2793ec61678ccf2ce9fb311161755c067b2ea3cdc8c04fea5bd4e61364df24b7590a941caa5eba01