Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 07:09
Behavioral task
behavioral1
Sample
AAFK.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
AAFK.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
AAFK.pyc
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
AAFK.pyc
Resource
win10v2004-20240508-en
General
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Target
AAFK.pyc
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Size
1KB
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MD5
cbfef6a2ac0c6bad19c45315f4670716
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SHA1
044654a5f335d798790132b7f41f3092a072d1d5
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SHA256
a7d75b554906becb45362a1ccbccc4927c3b5720adfca6c09f1c0b3f765cc99f
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SHA512
fe99980016f135f1cf42dd6457928cb992b5661c1ce78b541f0e36f25c9b81fe5519328639985eba44ce6184c57e5cca9721ab36126fc388804bbe2ef7eda8dc
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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell rundll32.exe Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file rundll32.exe Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2932 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2932 AcroRd32.exe 2932 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1308 wrote to memory of 2696 1308 cmd.exe 29 PID 1308 wrote to memory of 2696 1308 cmd.exe 29 PID 1308 wrote to memory of 2696 1308 cmd.exe 29 PID 2696 wrote to memory of 2932 2696 rundll32.exe 30 PID 2696 wrote to memory of 2932 2696 rundll32.exe 30 PID 2696 wrote to memory of 2932 2696 rundll32.exe 30 PID 2696 wrote to memory of 2932 2696 rundll32.exe 30
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\AAFK.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:1308 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\AAFK.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2696 -
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\AAFK.pyc"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2932
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD5b8cf8f8d1e95ee0eeeefeefba3856ec3
SHA1cb1543dea8416197bf4aefb77aadbac83f1f8aca
SHA25605cd24299c39fac2cc6754c2b7fd432cf9ca8b905052850202df7fc6e75eae20
SHA512cde45639a2e58835749d8b15bee1c79b2233701158447af89cfa5525d27c0d922dedc5e58e0e609501c0256ab61c911453355a6ed2c2f0b2fb7ac713eb2463ef