Analysis
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max time kernel
145s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
22-07-2021 18:07
Static task
static1
Behavioral task
behavioral1
Sample
ER8NSOWUNA.js
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
ER8NSOWUNA.js
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
ER8NSOWUNA.js
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Size
8KB
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MD5
0d75df466a9ab3ec0decd6d186423903
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SHA1
af6f88ff79b19b885650160eb11971d94ce81e10
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SHA256
555b5c53b23a062843fdcafa1296709d36176b22249aef65f207460d4bdbf490
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SHA512
e5d14ff15bdab8bc2c382ea97416e65983836fc86548c2a4f1fb6ee033e3fbd9a37f3de6cc7df631d23d607a8e6ad5c29e4a09e699a33488071152d6268994ad
Score
10/10
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 6 3904 wscript.exe -
Drops startup file 2 IoCs
Processes:
wscript.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ER8NSOWUNA.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ER8NSOWUNA.js wscript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ER8NSOWUNA.js\"" wscript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of WriteProcessMemory 2 IoCs
Processes:
wscript.exedescription pid process target process PID 3904 wrote to memory of 2836 3904 wscript.exe schtasks.exe PID 3904 wrote to memory of 2836 3904 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\ER8NSOWUNA.js1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ER8NSOWUNA.js2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/2836-114-0x0000000000000000-mapping.dmp