Analysis
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max time kernel
185s -
max time network
117s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
02-12-2022 00:26
Static task
static1
Behavioral task
behavioral1
Sample
d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe
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Size
140KB
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MD5
3193db93a537528782b1ba428b370980
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SHA1
7271acf3a4accdd81749a9015d0a42b28a3d717b
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SHA256
d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6
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SHA512
4500ebb4e1e99885d106fd3260553db1ad9da9e47fa5c926ce37178895d1c9582400b9a40090b60a49c49dd260230d93f076065be1cdfaf2e14085778488a3e6
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SSDEEP
1536:f+NQe6VtKycXYAcANSU+MNG5ipzqNbCa34YaI77UsMJn1ogCnzqLcTJLO01DvqKF:IZeKyEYnAz4R77UsMJn1oyfG+gx
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-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe Set value (int) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" nunas.exe -
Executes dropped EXE 1 IoCs
pid Process 788 nunas.exe -
Loads dropped DLL 2 IoCs
pid Process 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /p" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /f" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /a" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /h" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /b" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /q" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /l" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /v" nunas.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /g" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /e" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /k" nunas.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /y" d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /t" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /c" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /w" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /o" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /i" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /d" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /m" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /s" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /u" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /x" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /j" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /z" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /r" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /n" nunas.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\nunas = "C:\\Users\\Admin\\nunas.exe /y" nunas.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 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe 788 nunas.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 788 nunas.exe 788 nunas.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 932 wrote to memory of 788 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 28 PID 932 wrote to memory of 788 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 28 PID 932 wrote to memory of 788 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 28 PID 932 wrote to memory of 788 932 d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.exe"C:\Users\Admin\AppData\Local\Temp\d05d40d34639e9a5d782cf87d5c7117ff2496fd69648f9ccfe999cdb0d6617b6.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:932 -
C:\Users\Admin\nunas.exe"C:\Users\Admin\nunas.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:788
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
140KB
MD58d9ac466b84ca26fc8eb726f91d2ebb5
SHA1ee626e31d52da5c65421961b8bce8dc14f1fe077
SHA256b2f8eaf893fcfe957ffb35bb73ccba20fc2cfa59c83618efaf538479304dae4c
SHA51286f9418742b7d7232da06101ce3b341fbac7e9018554c205404ced97620021467ab2d6e2cd2e68dfea7837a72217b9b669aa28d8a6549b63c8d8c7f2d9981a06
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Filesize
140KB
MD58d9ac466b84ca26fc8eb726f91d2ebb5
SHA1ee626e31d52da5c65421961b8bce8dc14f1fe077
SHA256b2f8eaf893fcfe957ffb35bb73ccba20fc2cfa59c83618efaf538479304dae4c
SHA51286f9418742b7d7232da06101ce3b341fbac7e9018554c205404ced97620021467ab2d6e2cd2e68dfea7837a72217b9b669aa28d8a6549b63c8d8c7f2d9981a06
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Filesize
140KB
MD58d9ac466b84ca26fc8eb726f91d2ebb5
SHA1ee626e31d52da5c65421961b8bce8dc14f1fe077
SHA256b2f8eaf893fcfe957ffb35bb73ccba20fc2cfa59c83618efaf538479304dae4c
SHA51286f9418742b7d7232da06101ce3b341fbac7e9018554c205404ced97620021467ab2d6e2cd2e68dfea7837a72217b9b669aa28d8a6549b63c8d8c7f2d9981a06
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Filesize
140KB
MD58d9ac466b84ca26fc8eb726f91d2ebb5
SHA1ee626e31d52da5c65421961b8bce8dc14f1fe077
SHA256b2f8eaf893fcfe957ffb35bb73ccba20fc2cfa59c83618efaf538479304dae4c
SHA51286f9418742b7d7232da06101ce3b341fbac7e9018554c205404ced97620021467ab2d6e2cd2e68dfea7837a72217b9b669aa28d8a6549b63c8d8c7f2d9981a06