Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
14-08-2024 03:47
Behavioral task
behavioral1
Sample
SolaraV3/BoostrapperV1.16.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
SolaraV3/BoostrapperV1.16.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
Stub.pyc
Resource
win7-20240708-en
Behavioral task
behavioral4
Sample
Stub.pyc
Resource
win10v2004-20240802-en
General
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Target
Stub.pyc
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Size
874KB
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MD5
8fc8d74e4194abe50c77392f4a28fd25
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SHA1
44da8f0194062f5c55c3d074ecdf35eac88f224c
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SHA256
ac1c0112d09abb04a8614ef722126d843a2455b2fb88a70c603eb50bf81e6382
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SHA512
28f80743f5bacddc32f79bf299b35b0e42ba5fb8ad95a0aabb3493af158e3b22e811e58abc1d7deb10620ed35888f96f5a2ab8b02e2ebdcbd78f0e3203db942f
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SSDEEP
24576:/eNheG6sydEQbDKWhad8n67VdKVmMSZO0s:/UQ2d1L4QOH
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-1-5-21-2958949473-3205530200-1453100116-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\pyc_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\pyc_auto_file\ rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.pyc\ = "pyc_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\pyc_auto_file\shell\Read\command rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\.pyc rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\pyc_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_CLASSES\pyc_auto_file\shell rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000_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 2812 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2812 AcroRd32.exe 2812 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2692 wrote to memory of 2580 2692 cmd.exe 31 PID 2692 wrote to memory of 2580 2692 cmd.exe 31 PID 2692 wrote to memory of 2580 2692 cmd.exe 31 PID 2580 wrote to memory of 2812 2580 rundll32.exe 32 PID 2580 wrote to memory of 2812 2580 rundll32.exe 32 PID 2580 wrote to memory of 2812 2580 rundll32.exe 32 PID 2580 wrote to memory of 2812 2580 rundll32.exe 32
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc1⤵
- Suspicious use of WriteProcessMemory
PID:2692 -
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Stub.pyc2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2580 -
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\Stub.pyc"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2812
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD522659fea9d0252ac2d6a1181630e1e9d
SHA10bbf5396c342fe3b2f84cf862414e38a531d8093
SHA2564ed01ad391d90c29457335c31ab741763a1f3772abb1fa9f14ea6c3ed04bcd33
SHA512ff2f877be3b0c1a56660de0cc40616e5efb6877a4f7089ce72d0d3d554397832c5bef085f747ba6ce90ec72fcd3801f7df5e5c71a8085b36a130bbe5287306b5