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Analysis
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max time kernel
151s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
26/12/2023, 16:10
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
7b9ad5bb7b835f4500d114ab663f5c83.exe
Resource
win7-20231215-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
7b9ad5bb7b835f4500d114ab663f5c83.exe
Resource
win10v2004-20231215-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
7b9ad5bb7b835f4500d114ab663f5c83.exe
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Size
200KB
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MD5
7b9ad5bb7b835f4500d114ab663f5c83
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SHA1
62616ca6da20ab8d3063f9e45baee7d069d97357
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SHA256
d489d66321766c1a201d8925ebff564c80438748da2a156a492806fedad877a9
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SHA512
9b6913b5e15a6ed5351a6a3f6f1b753056ae57a80968a5376e9c599ba08c59f00542ec8fd39b51a5d250c02e4c9ae75deaaa35d8b05720eee5ded34a88d17042
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SSDEEP
3072:QIsMzFaDEKrEgQKfQ2OOOFOWhwO2OOOOOrOOOOhOOOOO3OOOF/7OOOOOMOsOOOi1:
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" biuawik.exe -
Executes dropped EXE 1 IoCs
pid Process 2320 biuawik.exe -
Loads dropped DLL 2 IoCs
pid Process 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe -
Adds Run key to start application 2 TTPs 51 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /k" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /z" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /B" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /D" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /h" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /d" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /L" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /S" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /x" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /g" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /T" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /p" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /m" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /u" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /f" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /w" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /o" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /n" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /j" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /Y" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /Q" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /i" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /v" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /E" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /N" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /K" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /O" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /l" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /e" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /X" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /W" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /c" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /F" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /H" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /M" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /R" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /q" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /r" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /a" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /J" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /U" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /Z" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /s" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /A" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /t" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /C" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /y" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /b" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /I" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /P" biuawik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\biuawik = "C:\\Users\\Admin\\biuawik.exe /G" biuawik.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe 2320 biuawik.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 2320 biuawik.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2516 wrote to memory of 2320 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 28 PID 2516 wrote to memory of 2320 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 28 PID 2516 wrote to memory of 2320 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 28 PID 2516 wrote to memory of 2320 2516 7b9ad5bb7b835f4500d114ab663f5c83.exe 28 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16 PID 2320 wrote to memory of 2516 2320 biuawik.exe 16
Processes
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C:\Users\Admin\AppData\Local\Temp\7b9ad5bb7b835f4500d114ab663f5c83.exe"C:\Users\Admin\AppData\Local\Temp\7b9ad5bb7b835f4500d114ab663f5c83.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2516 -
C:\Users\Admin\biuawik.exe"C:\Users\Admin\biuawik.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
92KB
MD50ee098ee139741fbb1be457ce04a6537
SHA11cabafc872469e8b1d73da48b620205dfba8f1fa
SHA25648cb0854788d1c88dbbfaa75e23af6edb412a88fa65299feb1bc37ee1572a4e9
SHA512de5240c137bf654db3182984426007d5e5f935a7b9c5450375cba29214e7ca6d4487002554eed4bf32bb8fe64d3b7e499b3555cd55f81e560b8babac6f7c3a31
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Filesize
95KB
MD56ef84d292b6736bb2caa2bcdeec04576
SHA1adda8554213c457bfaf070d79e6340c4aedbd69d
SHA25648d48522a77b0b6a34bd010b73bb0105c18f33ec8191398c3d0da9a6d334baaf
SHA512c63005a23f372e1cff27e5bbbcee4d85c39e05e96b619d788043bd31f019a95c34edfb34f764a61a984d63f5974301e27d187878d3bf7adff814ec9e4c207ad7
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Filesize
93KB
MD5285612703cd6e04fd607f6cb009078e5
SHA1838177daed96c4bbce73545f9dd385825579c41d
SHA256e1044136d4a041efaa2cdb35e7953b69c137ad0783117756866ae40f02d7ba2c
SHA51276a49da165ba6a6d69623214ffab1710a22a3ad054a77a8eada015983a21596c16157646df96663f67912121cde32eb15e128c437441c3d69e74df01480e553b