Analysis
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max time kernel
148s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
26-07-2024 20:44
Static task
static1
Behavioral task
behavioral1
Sample
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe
Resource
win7-20240704-en
General
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Target
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe
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Size
61KB
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MD5
1991fa7f68eb51bda59c016cc5736385
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SHA1
857090a6439901aeca151e45507eace8d00589b0
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SHA256
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d
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SHA512
3d73f857024b2fb20e338c4fae0d0db4c7562e3a7a8bb36db066ccf85fb14fb322996cc13d373926ae6de2215c8dad0bf7e95c91d34d96e674deaba7f239b239
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SSDEEP
1536:saTkcl2v/z0thjkh6+uYLo31d0JuPrROVz:Jo0cAthu6+FQ0JuPkz
Malware Config
Extracted
urelas
218.54.47.76
218.54.47.77
218.54.47.74
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe -
Executes dropped EXE 1 IoCs
Processes:
biudfw.exepid process 4664 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:
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exebiudfw.execmd.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language biudfw.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exedescription pid process target process PID 1028 wrote to memory of 4664 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe biudfw.exe PID 1028 wrote to memory of 4664 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe biudfw.exe PID 1028 wrote to memory of 4664 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe biudfw.exe PID 1028 wrote to memory of 2348 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe cmd.exe PID 1028 wrote to memory of 2348 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe cmd.exe PID 1028 wrote to memory of 2348 1028 3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe"C:\Users\Admin\AppData\Local\Temp\3a27f0e0ce51850fadf827aa71ac6980c8e86a8faeaa7d4af268aed4af76c54d.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1028 -
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:4664 -
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:2348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD5bb4b322fee271a5a631167637e39aa3d
SHA1b576d43438a586af45bda3fd1714244b0157e040
SHA256abc847b9f97d6702fc3872445ed1ae61b51e48308104f7aff8e52c9d1e5e8416
SHA51262778cc497600e8e8415cd3a66ec1122dd036fde603b19fefe0a4ee3d951a9cf3ee1b85b97e5ac7c3f3a41062d11ff5ef1c2d6856ef53dfd71403d6ff9d83c7b
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Filesize
512B
MD5657ce9e5dd337971e44dfb9cb3fbf7dd
SHA1026734083afaa4b7d298781b26a72ac9b67ac831
SHA2563138d6a5526aaa3cb120adb309f2a27d5fec03c8aa088268a1c7f378dd722472
SHA51279aab9648bb19ebe5946dd9edd7e11a70ea7b340a1c7539ccff3d3d13de2932bf5ea9077c079208e09bf5d632f00541e52d4926c5c80f86741effb8d86acd26d
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Filesize
338B
MD5b2f167d976fbab4ebcad72be5625f596
SHA10a79af93d0857c93a01cfd402228775c49949abb
SHA256a9465f51a25bf51cb3447e223c87bcc83f651554147eecc3f2436af2b2244c4c
SHA512f62fa12998f5c82f99068b9d9e82977fa35a02ccdd4bfdc7c97015b2e5ccc63a3294f9eec1b8c7a74908d3451750d157c5a8c0631c0ffc5e0cccff358125dee6