Analysis
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max time kernel
89s -
max time network
77s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
07-11-2024 18:39
Behavioral task
behavioral1
Sample
636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe
Resource
win7-20240903-en
General
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Target
636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe
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Size
59KB
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MD5
efd495722840bb313ca2fa9db1b724e0
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SHA1
ed6649f06f7a8553f03dc6648ec8a0be1bc2e5b3
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SHA256
636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056a
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SHA512
c3a416d202b44899e10b412c131f85f01be667cb10986d072e0be5aa5fdc9d1250bf07b00886d6f8b3f088cb77515abe39492f107dbec9e7e474d33550ce3665
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SSDEEP
1536:6W82C0Db1edMckBI1kmJAhTPY6pnouy8d:6n25DbaMySmJAhbvoutd
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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Deletes itself 1 IoCs
pid Process 2160 cmd.exe -
Executes dropped EXE 1 IoCs
pid Process 2156 biudfw.exe -
Loads dropped DLL 1 IoCs
pid Process 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe -
resource yara_rule behavioral1/memory/2364-0-0x0000000001330000-0x000000000135C000-memory.dmp upx behavioral1/files/0x0008000000019234-4.dat upx behavioral1/memory/2156-10-0x0000000001220000-0x000000000124C000-memory.dmp upx behavioral1/memory/2364-19-0x0000000001330000-0x000000000135C000-memory.dmp upx behavioral1/memory/2156-22-0x0000000001220000-0x000000000124C000-memory.dmp upx behavioral1/memory/2156-25-0x0000000001220000-0x000000000124C000-memory.dmp upx behavioral1/memory/2156-31-0x0000000001220000-0x000000000124C000-memory.dmp upx -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language biudfw.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2364 wrote to memory of 2156 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 30 PID 2364 wrote to memory of 2156 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 30 PID 2364 wrote to memory of 2156 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 30 PID 2364 wrote to memory of 2156 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 30 PID 2364 wrote to memory of 2160 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 31 PID 2364 wrote to memory of 2160 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 31 PID 2364 wrote to memory of 2160 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 31 PID 2364 wrote to memory of 2160 2364 636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe"C:\Users\Admin\AppData\Local\Temp\636f62090d65675be20e6ea64127d760c390f043bae8bf777221982c4a54056aN.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364 -
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:2156
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C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2160
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
512B
MD5b4a86880004da8726288d7ec954885a8
SHA11bab1cfbdc2c540246210bc7852f8fe7e8357b31
SHA256c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46
SHA51222758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4
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Filesize
340B
MD5aaafcd6a3ecb49728947aeac3c474076
SHA171cb04a557ff0acc49b4a2feb6b0d8c43ce56dae
SHA2568919962339bd5af66892ce18e8c15c47ee38b1efa49aa4e7e14a01f51ee65bee
SHA512885be2378c459d4552555ad379d7e352d0638643a76370ddc1408b533a194b68b5c405dd1ac98546593924d28a29b1043771ea9b9aa6b3005abf119b7da5f668
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Filesize
59KB
MD57ac778740b8b5f59ab7d5b9f5e7f104a
SHA1bd7c43e2c2d469b32db096d087eef8e377f1b805
SHA256a6429052e023ef98527ba85f18849c19a502de09d62bd8136e89ca59bf48a74c
SHA5122cf8e15431ca7a286a09311faa33a47238606369bd34d5da23a2458013570f7bab8bab66a19ccba92b8453a6f9da13b13f7711e6ca5f2d18b5682c0644288c1b