Analysis
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max time kernel
150s -
max time network
147s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
21-04-2021 13:20
Static task
static1
Behavioral task
behavioral1
Sample
receipt.js
Resource
win7v20210408
Behavioral task
behavioral2
Sample
receipt.js
Resource
win10v20210410
General
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Target
receipt.js
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Size
210KB
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MD5
0d18f9a0a1605a34247be8918dd3d360
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SHA1
1046c9c221468b1a8725d9e958ddf20b0ec3a6c1
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SHA256
3001d3aea048d4624a808d041a483d0b5142772fa19412c1177e83ffc2e543de
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SHA512
cc32e93e876ff536475cec9a0ceea4014d443b994dfe4c7be899745c15001ed86d6dc66e79fc281af0d1b4acaa35cb7f2c30df7f1f48a2cb6fbc8d79c35d7011
Malware Config
Signatures
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WSHRAT Payload 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\receipt.js family_wshrat -
Blocklisted process makes network request 43 IoCs
Processes:
wscript.exewscript.exeflow pid process 3 1652 wscript.exe 4 1652 wscript.exe 7 1980 wscript.exe 8 1980 wscript.exe 13 1980 wscript.exe 14 1980 wscript.exe 15 1980 wscript.exe 16 1980 wscript.exe 17 1980 wscript.exe 18 1980 wscript.exe 19 1980 wscript.exe 21 1980 wscript.exe 22 1980 wscript.exe 23 1980 wscript.exe 24 1980 wscript.exe 25 1980 wscript.exe 26 1980 wscript.exe 28 1980 wscript.exe 29 1980 wscript.exe 30 1980 wscript.exe 31 1980 wscript.exe 32 1980 wscript.exe 33 1980 wscript.exe 35 1980 wscript.exe 36 1980 wscript.exe 37 1980 wscript.exe 38 1980 wscript.exe 39 1980 wscript.exe 40 1980 wscript.exe 42 1980 wscript.exe 43 1980 wscript.exe 44 1980 wscript.exe 45 1980 wscript.exe 46 1980 wscript.exe 47 1980 wscript.exe 49 1980 wscript.exe 50 1980 wscript.exe 51 1980 wscript.exe 52 1980 wscript.exe 53 1980 wscript.exe 54 1980 wscript.exe 56 1980 wscript.exe 57 1980 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\receipt.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\receipt.js wscript.exe -
Adds Run key to start application 2 TTPs 8 IoCs
Processes:
wscript.exewscript.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\receipt = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\receipt.js\"" wscript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\receipt = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\receipt.js\"" wscript.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\receipt = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\receipt.js\"" wscript.exe Key created \REGISTRY\MACHINE\software\microsoft\windows\currentversion\run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\receipt = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\receipt.js\"" wscript.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\software\microsoft\windows\currentversion\run 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.
Processes:
flow ioc 12 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.
Processes:
description flow ioc 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) HTTP User-Agent header 7 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 8 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
wscript.exedescription pid process target process PID 1652 wrote to memory of 1980 1652 wscript.exe wscript.exe PID 1652 wrote to memory of 1980 1652 wscript.exe wscript.exe PID 1652 wrote to memory of 1980 1652 wscript.exe wscript.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\receipt.js1⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\receipt.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\receipt.jsMD5
0d18f9a0a1605a34247be8918dd3d360
SHA11046c9c221468b1a8725d9e958ddf20b0ec3a6c1
SHA2563001d3aea048d4624a808d041a483d0b5142772fa19412c1177e83ffc2e543de
SHA512cc32e93e876ff536475cec9a0ceea4014d443b994dfe4c7be899745c15001ed86d6dc66e79fc281af0d1b4acaa35cb7f2c30df7f1f48a2cb6fbc8d79c35d7011
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memory/1980-60-0x0000000000000000-mapping.dmp