Analysis
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max time kernel
146s -
max time network
161s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
07-07-2021 09:02
Static task
static1
Behavioral task
behavioral1
Sample
4.js
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
4.js
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
4.js
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Size
9KB
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MD5
b5e34472d72474569a2332ce317f4cc1
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SHA1
209017707d1e40faa9ec527e2128ef25de4b76ce
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SHA256
99d7b67e0d011b22fe3e491445fe0a6dab5e6999d8f7fb99ec505d434255d712
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SHA512
2d18a8be9a19fa77336d950c18257039f4fe5165c354aae253efba0509c72a879a6ccbf3ec2275345deeed39d31227ae95ff7c56fa1583919e715ad6f5ba0094
Score
10/10
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 6 3540 wscript.exe -
Drops startup file 2 IoCs
Processes:
wscript.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4.js wscript.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4.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\I0ZIRGD8RJ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\4.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 3540 wrote to memory of 1528 3540 wscript.exe schtasks.exe PID 3540 wrote to memory of 1528 3540 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\4.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\4.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/1528-114-0x0000000000000000-mapping.dmp