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Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
26/07/2024, 18:42
Static task
static1
Behavioral task
behavioral1
Sample
cs+changer.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
cs+changer.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral3
Sample
loader-o.pyc
Resource
win7-20240704-en
Behavioral task
behavioral4
Sample
loader-o.pyc
Resource
win10v2004-20240709-en
General
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Target
loader-o.pyc
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Size
72KB
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MD5
427092cafbc4040445f9f440c49c0ec3
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SHA1
4b63e190d1ca0ddd742158fb23f55a58d05c1784
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SHA256
a515198d56a2213a7050c49fdbfab762024fc381f68e1267a0a89259d4bac2a9
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SHA512
99954365492b2a7d96ca67fddf68079729f367e8a89c951c088c8fd3ee61f0e09f182a1acfa4d9d1a711989bf4d5472ac2caf5a259baf4bbf2220150edfb7f79
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SSDEEP
768:dFaRsuM9ZGw1ql4az5w2GZgDH6dLOctnCceIWtYVHtGSsTmgvxmkR9gCvOT:dFaR+9ZG0azhoOcIrEVNMbv/9aT
Malware Config
Signatures
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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 1 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 AcroRd32.exe -
Modifies registry class 9 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_Classes\Local Settings rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\.pyc rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3450744190-3404161390-554719085-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2968 AcroRd32.exe 2968 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2696 wrote to memory of 2852 2696 cmd.exe 31 PID 2696 wrote to memory of 2852 2696 cmd.exe 31 PID 2696 wrote to memory of 2852 2696 cmd.exe 31 PID 2852 wrote to memory of 2968 2852 rundll32.exe 32 PID 2852 wrote to memory of 2968 2852 rundll32.exe 32 PID 2852 wrote to memory of 2968 2852 rundll32.exe 32 PID 2852 wrote to memory of 2968 2852 rundll32.exe 32
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\loader-o.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\loader-o.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\loader-o.pyc"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2968
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