Analysis
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max time kernel
91s -
max time network
93s -
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 13:29
Static task
static1
Behavioral task
behavioral1
Sample
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe
Resource
win7-20240903-en
General
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Target
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe
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Size
65KB
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MD5
7b21ff621233c2d543b7df119a3dca70
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SHA1
56cd210cdc0d22d11683f108ff50abbd178c342e
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SHA256
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04
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SHA512
04833a0eb479f874be05280a7198ed41e63e94ac5f6d3c54fe4df3100a68194537b3b41a2ace2186b1315858cb56dc071952149fb0b890f5c32d04d5191be0bc
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SSDEEP
1536:6bQx5oPsr2vFxDPhAvzgAQzFZ77MzeTm/j:6bQRSHpAvzyf7MzeTYj
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:
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe -
Executes dropped EXE 1 IoCs
Processes:
biudfw.exepid process 4756 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:
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exebiudfw.execmd.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.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:
f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exedescription pid process target process PID 4324 wrote to memory of 4756 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe biudfw.exe PID 4324 wrote to memory of 4756 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe biudfw.exe PID 4324 wrote to memory of 4756 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe biudfw.exe PID 4324 wrote to memory of 1004 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe cmd.exe PID 4324 wrote to memory of 1004 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe cmd.exe PID 4324 wrote to memory of 1004 4324 f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe"C:\Users\Admin\AppData\Local\Temp\f485252fe6ce56b04634ae86940df732cb2eb6b2f8dcddc485654bb9d2e79b04N.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4324 -
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:4756
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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:1004
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD5f26b64215ace5b3a1d2ab5c4dcb15ea7
SHA13dde1e4312a52e7cdc7e5e53c74957e3d594b722
SHA256b4f1e1d7bf3987c54441fb1d29738038be4d1068d7c0b8aaf70f95bde855b718
SHA51265368201a05d8cf883828122ff2799fcb6f1a12f8dc1fa2b204e4e4c4030655398c7920ec03ef7737750fffafe4d98cad66fc653a2cd394a1aed8b529890db1f
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Filesize
512B
MD5efd90b3ac908d5482af367de3a82184a
SHA1de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA25644f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA5126e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02
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Filesize
340B
MD5e6bc1aaf2bd0ff5487ce9e2223955c9f
SHA106ec20c695a580777e5a796b0de082cf09f456c8
SHA256db22ad13bbbac880ec611debedb44f2f5a43b20a927f1c03d1ef4bb900995a53
SHA5126260aeaf0b4767b9740d969a53fab43a293fa2e34f833773964db1973825bce0a762394763fd0725ec21eba3bac6f34da39a8975e0fbf7277e8e72cb9ea8e9b3