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Analysis
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max time kernel
118s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
21/02/2024, 19:53
Behavioral task
behavioral1
Sample
creal.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
creal.exe
Resource
win10v2004-20240221-en
Behavioral task
behavioral3
Sample
creal.pyc
Resource
win7-20240220-en
Behavioral task
behavioral4
Sample
creal.pyc
Resource
win10v2004-20240221-en
General
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Target
creal.pyc
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Size
49KB
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MD5
156359611afe30c92b1eea1dc3c8234f
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SHA1
2aed1d8a56c6f0a4489c921474362769e21a439b
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SHA256
e3c2c462f098f00425cbe737f8878880c90ebebe48966d42694db87d89a331fc
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SHA512
b1341f750734c783f246d4843794b7aa04552fed5805f73f0f2405f2334ad524ed5cbbaa548309632c1630542e83fd2e1c834a8024d8dbf17d7b582a08283a71
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SSDEEP
1536:zr1GFEfrLPpZ73YU725iZc8QQmGw9HRpN:zhGFEDLfYUUiibN
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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Modifies registry class 9 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2508 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2508 AcroRd32.exe 2508 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2856 wrote to memory of 2664 2856 cmd.exe 29 PID 2856 wrote to memory of 2664 2856 cmd.exe 29 PID 2856 wrote to memory of 2664 2856 cmd.exe 29 PID 2664 wrote to memory of 2508 2664 rundll32.exe 30 PID 2664 wrote to memory of 2508 2664 rundll32.exe 30 PID 2664 wrote to memory of 2508 2664 rundll32.exe 30 PID 2664 wrote to memory of 2508 2664 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\creal.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2856 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\creal.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2664 -
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\creal.pyc"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2508
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD51d722d15c3fbeecbf2afd2d5987cd2ea
SHA133811eed4619e5fa8d369c1d8a03f092d694fe08
SHA256de859c059e3edf9e0f017d0167982d32bb0e06551a0dd47777c3a20817dcef9d
SHA512bddbec6783dca56af3e6607c061dad1a6a6296a92cea8198606d2670fb2534a223a4d8b2a410ce6210527615c85f02b410c25b7ffd85942b4020f686bd4206ae