Analysis
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max time kernel
94s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-11-2024 13:01
Static task
static1
Behavioral task
behavioral1
Sample
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe
Resource
win7-20240708-en
General
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Target
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe
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Size
57KB
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MD5
200a6c6846002ae2b9291e41fa9f8c17
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SHA1
711392307d01fc3c71579a74b06f07cf6d67a3b3
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SHA256
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c
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SHA512
ff85709b9e0d76f429286cbee238f8c3614756f90c63fc14f8e24dc0b83033b70aba974b9ec544331f3fa094f0f1ea24ccd4a071940e623a5be7ff5d89477801
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SSDEEP
1536:amZ+4hcuX5uZ79jmvFQTXnz9yQ/PFBhl15:amZ+luXwy2f9LDhD5
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:
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe -
Executes dropped EXE 1 IoCs
Processes:
biudfw.exepid Process 3372 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:
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exebiudfw.execmd.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.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:
4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exedescription pid Process procid_target PID 3180 wrote to memory of 3372 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 87 PID 3180 wrote to memory of 3372 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 87 PID 3180 wrote to memory of 3372 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 87 PID 3180 wrote to memory of 3084 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 88 PID 3180 wrote to memory of 3084 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 88 PID 3180 wrote to memory of 3084 3180 4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe"C:\Users\Admin\AppData\Local\Temp\4a9b5551e62974c62d274323b1902155645660d6d0ad6bfd7ba6f604d47b136c.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3180 -
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:3372
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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:3084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
57KB
MD57b20c856a1eca2218a30a9d99f57d0e7
SHA139b39aebd1ab4664eab9701908c927213a7be950
SHA256cb7d5737e85559d419c99fa5954812b03306ccb6be2d4e19e90e8c57c24460e6
SHA51216e436df27cd74ed123e8cb3a4ecd79f65d2c226a484fbf4a6c16a3d8510453f4fc9fd902d901a77c1aa95b9ebc9e6c08c89b64d6e117abeba437756095389e7
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Filesize
512B
MD526625b4ca7658f7ba4dc7d982782323c
SHA1574aa314998c39e683675ccf457b0305341a4aaf
SHA256c494e0ffeee72023dac244366c08072f677ba328ba805f9e480abc2824e99283
SHA5125a9af4c6be10240dec0d33b37bc6f6836f1db5d0a2a9dd158d63848a8a97dad68e2d9217aca2b2d1cf122d9534aba0d23b247f6686c4ff934bd7035a927d9b9d
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Filesize
338B
MD54465c00a26c2cb9529aa52dd6e6e0b43
SHA17f8a7e9572fa17fe499e38ffc665335cb2d2c05c
SHA256f1f4c579677ee843eb0bf07b42170b41e80432ff0f09d6cbea07abc261aea4ad
SHA512f52cbbbea43180ba74425ed41429adfb53b736b967c4d1760e50d939564c1e622a2fc012a44ac26fb2d1ff8f96a4087d9e1e2dcc4a8c66354995b5e31255e13f