Analysis
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max time kernel
152s -
max time network
42s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
02-10-2022 00:04
Static task
static1
Behavioral task
behavioral1
Sample
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe
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Size
232KB
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MD5
63462bdc5731c41e3ca9f43dc746a0d1
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SHA1
2b319e955be645fd8f53b3c180a409207eedcfad
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SHA256
bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501
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SHA512
e9099671754941259e6f7d886407a6293088c75d52c1dec3b32e29a5114d5c9687bef3b3b53fe7e1e920a1ab285b6fc25dbbfa56286d257641c1c626a5892a9d
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SSDEEP
3072:o/XVlhzmlvIirAvyMZe0EVv64pWCyiHCXV/u0h:zzOyMwTVv62WCyiHCXV/u0
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" pukel.exe -
Executes dropped EXE 1 IoCs
pid Process 1988 pukel.exe -
Loads dropped DLL 2 IoCs
pid Process 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /e" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /n" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /h" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /t" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /v" pukel.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /z" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /u" bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /l" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /k" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /f" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /o" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /m" pukel.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /j" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /p" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /i" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /x" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /c" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /w" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /r" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /s" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /d" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /u" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /g" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /y" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /b" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /a" pukel.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\pukel = "C:\\Users\\Admin\\pukel.exe /q" pukel.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe 1988 pukel.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 1988 pukel.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 900 wrote to memory of 1988 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 27 PID 900 wrote to memory of 1988 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 27 PID 900 wrote to memory of 1988 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 27 PID 900 wrote to memory of 1988 900 bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe"C:\Users\Admin\AppData\Local\Temp\bf3b8dd2e537753481118332440da4ae8d07f8da0f99809486a8da82a4312501.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:900 -
C:\Users\Admin\pukel.exe"C:\Users\Admin\pukel.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
PID:1988
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
232KB
MD5f52c91b65a1eb293567a7eecb79daf06
SHA137038ce875a427a50a057ba54aff35bbde026395
SHA256b5cc9995b208a52460b8c1d567e5c5f4958b7ee7ac99efebd050b3e17a58425f
SHA512aa0aead7c2a176092b91b93ca7bff16e70bbef91b22f37eb43d1844afd698aa85e2459066d5d3c4e3f32af4e873f365f70cbef380800e06ef6661fd98c4aab21
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Filesize
232KB
MD5f52c91b65a1eb293567a7eecb79daf06
SHA137038ce875a427a50a057ba54aff35bbde026395
SHA256b5cc9995b208a52460b8c1d567e5c5f4958b7ee7ac99efebd050b3e17a58425f
SHA512aa0aead7c2a176092b91b93ca7bff16e70bbef91b22f37eb43d1844afd698aa85e2459066d5d3c4e3f32af4e873f365f70cbef380800e06ef6661fd98c4aab21
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Filesize
232KB
MD5f52c91b65a1eb293567a7eecb79daf06
SHA137038ce875a427a50a057ba54aff35bbde026395
SHA256b5cc9995b208a52460b8c1d567e5c5f4958b7ee7ac99efebd050b3e17a58425f
SHA512aa0aead7c2a176092b91b93ca7bff16e70bbef91b22f37eb43d1844afd698aa85e2459066d5d3c4e3f32af4e873f365f70cbef380800e06ef6661fd98c4aab21
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Filesize
232KB
MD5f52c91b65a1eb293567a7eecb79daf06
SHA137038ce875a427a50a057ba54aff35bbde026395
SHA256b5cc9995b208a52460b8c1d567e5c5f4958b7ee7ac99efebd050b3e17a58425f
SHA512aa0aead7c2a176092b91b93ca7bff16e70bbef91b22f37eb43d1844afd698aa85e2459066d5d3c4e3f32af4e873f365f70cbef380800e06ef6661fd98c4aab21