Analysis
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max time kernel
94s -
max time network
97s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
12-10-2024 00:09
Static task
static1
Behavioral task
behavioral1
Sample
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe
Resource
win7-20241010-en
General
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Target
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe
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Size
64KB
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MD5
87eafb7b0a72609e785257925dc1c3ed
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SHA1
f95e8cfdf9043b8694bdcfca02284d38aedb0f1f
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SHA256
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc
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SHA512
1477387391dcafac0d27825ace964a6d422e51702a33bcaf5868888f1201d83045855f21eb73c7fb49c473779f71eb956dc564a4265ab75faa19976075966131
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SSDEEP
1536:6bQx5oPsr2vFxDPhAvzgAQzFZ77MzeTm/7:6bQRSHpAvzyf7MzeTY7
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:
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe -
Executes dropped EXE 1 IoCs
Processes:
biudfw.exepid process 2804 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:
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exebiudfw.execmd.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.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:
8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exedescription pid process target process PID 4248 wrote to memory of 2804 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe biudfw.exe PID 4248 wrote to memory of 2804 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe biudfw.exe PID 4248 wrote to memory of 2804 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe biudfw.exe PID 4248 wrote to memory of 1388 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe cmd.exe PID 4248 wrote to memory of 1388 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe cmd.exe PID 4248 wrote to memory of 1388 4248 8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe cmd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe"C:\Users\Admin\AppData\Local\Temp\8e4d91bf0dbee54a2a9f2280f8cbeff946919b6e8b44fc8e5163c3f824cc06bc.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248 -
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:2804
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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:1388
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD57f552cb504df509996ff3881a797562f
SHA1a683ecf5de73092b28e90a1eb4dc8f89ff8bf17e
SHA2561d9569844a03fd53c2e43e8c64ff10380c62c3928d18aedb48ed302134244d8c
SHA512cc8570d02772080917db2f9829937a0eb53e882b8f41a292ceda13e13a9b321cd7d5146672520685acacb9c43471c7ffe58f7be08c5f4d791e3756ef26aada64
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Filesize
512B
MD5efd90b3ac908d5482af367de3a82184a
SHA1de9f01d2ed0247b7b347e55c5a09721a60147fb9
SHA25644f3db1bb73bb207a88008ae28d0399f888b5714ccccb2056f4148b4455e693d
SHA5126e3355f895af1d81887d5750033c5a139e4a0e1c2c928aeef1fd37f9c191e754b1f524d252c229ea5e744dbef4dd0a8240d9d3443651d42de198e82a197afb02
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Filesize
338B
MD5ca924d4b88a01a30062207c12f11646a
SHA171aa72755cd58918ae9af3cc588db2ed7a9e19a1
SHA256f6e5fc49e2ed487d335a5885a87d2e36da4be512939186548d1b0a823e21dc68
SHA512bc1086536a44aa8a52e165b3425d3bc8ba12973dcb04bbea23bdc8f2a7deef4ceb5ea8b6148a32962dd96c6f8153de5599119a8c455f688cea2b54c6a9cc13f0