Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10_x64 -
resource
win10-en -
submitted
20/09/2021, 10:56
Static task
static1
Behavioral task
behavioral1
Sample
Overdue Payment.js
Resource
win7v20210408
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Overdue Payment.js
Resource
win10-en
0 signatures
0 seconds
General
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Target
Overdue Payment.js
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Size
204KB
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MD5
5745363d82b1904ef54b914325d9b69f
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SHA1
5559ccd311497703b8092a51f6cd9301238ad401
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SHA256
7790518717f1e1c674361b4b26955a522541d6f56b73ad27bae7ec9f078c4ce3
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SHA512
389bc5ac5e8c816610c9bb089694a66ed9840ef4383248f91e84136f98811477c936ac6b503768a2a6ce0047981b9a10b304bb4fd777ec9ce7c4207963d101ec
Score
10/10
Malware Config
Signatures
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WSHRAT Payload 2 IoCs
resource yara_rule behavioral2/files/0x000500000001ab2d-116.dat family_wshrat behavioral2/files/0x000500000001ab2e-117.dat family_wshrat -
Blocklisted process makes network request 30 IoCs
flow pid Process 3 4008 wscript.exe 4 4008 wscript.exe 5 3944 wscript.exe 6 3944 wscript.exe 8 3944 wscript.exe 10 3944 wscript.exe 13 3944 wscript.exe 15 3944 wscript.exe 16 3944 wscript.exe 17 3944 wscript.exe 18 3944 wscript.exe 19 3944 wscript.exe 20 3944 wscript.exe 21 3944 wscript.exe 22 3944 wscript.exe 29 3944 wscript.exe 33 3944 wscript.exe 34 3944 wscript.exe 35 3944 wscript.exe 36 3944 wscript.exe 37 3944 wscript.exe 38 3944 wscript.exe 39 3944 wscript.exe 40 3944 wscript.exe 41 3944 wscript.exe 42 3944 wscript.exe 43 3944 wscript.exe 44 3944 wscript.exe 45 3944 wscript.exe 46 3944 wscript.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Overdue Payment.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Overdue Payment.js wscript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Overdue Payment = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Overdue Payment.js\"" wscript.exe Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Overdue Payment = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Overdue Payment.js\"" wscript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Overdue Payment = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Overdue Payment.js\"" wscript.exe Key created \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Overdue Payment = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Overdue Payment.js\"" wscript.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 7 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Script User-Agent 4 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 5 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 6 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 3 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 4 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4008 wrote to memory of 3944 4008 wscript.exe 69 PID 4008 wrote to memory of 3944 4008 wscript.exe 69
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Overdue Payment.js"1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4008 -
C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Overdue Payment.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3944
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