Analysis
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max time kernel
147s -
max time network
156s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
02-09-2021 08:37
Static task
static1
Behavioral task
behavioral1
Sample
SOLICITUD_99768674________.pdf.js
Resource
win7-en
Behavioral task
behavioral2
Sample
SOLICITUD_99768674________.pdf.js
Resource
win10v20210408
General
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Target
SOLICITUD_99768674________.pdf.js
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Size
207KB
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MD5
607e7ae85b834c95db9a85d479751580
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SHA1
185d69ebb99a415f47c83936c3a4ae3da12f7aa6
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SHA256
9ef3d03530f8deac1764f12fe8260303fe8a5838e2858999674bf08cf90369e9
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SHA512
65c5b4c95a5fe4ca6470a5abd6ef4de2f77fc2ed0638f914227190939d92378109216ea772ebf685858550c9d10586a6660642ae30ea26d3c8833e2ea77e2825
Malware Config
Signatures
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Blocklisted process makes network request 17 IoCs
Processes:
WScript.exeflow pid process 10 3568 WScript.exe 18 3568 WScript.exe 20 3568 WScript.exe 21 3568 WScript.exe 22 3568 WScript.exe 23 3568 WScript.exe 24 3568 WScript.exe 25 3568 WScript.exe 26 3568 WScript.exe 27 3568 WScript.exe 28 3568 WScript.exe 29 3568 WScript.exe 30 3568 WScript.exe 31 3568 WScript.exe 32 3568 WScript.exe 33 3568 WScript.exe 34 3568 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\CDImfLjZVm.js WScript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CDImfLjZVm.js WScript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
WScript.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\CDImfLjZVm.js\"" WScript.exe Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run WScript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4056 4052 WerFault.exe javaw.exe -
Modifies registry class 1 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings wscript.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
WerFault.exepid process 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe 4056 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 4056 WerFault.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
wscript.exedescription pid process target process PID 640 wrote to memory of 3568 640 wscript.exe WScript.exe PID 640 wrote to memory of 3568 640 wscript.exe WScript.exe PID 640 wrote to memory of 4052 640 wscript.exe javaw.exe PID 640 wrote to memory of 4052 640 wscript.exe javaw.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\SOLICITUD_99768674________.pdf.js1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\CDImfLjZVm.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
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C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\rudaoklehj.txt"2⤵
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4052 -s 3603⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\CDImfLjZVm.jsMD5
3c42714a2658cc70b45e715b97896d61
SHA111bdbbe7fe227bf2b06663c4e840c3db2c09200c
SHA25613a0e50640c3bcfbe873da3a4a6483aabfd48cac75840e6b6c4991beb4468df1
SHA512c42cff63543040f6c27d2fd69f2d54d9a69f5674ee842890c657cf1dc674fa5b59aa9d7fc7823a6b984a2930a66287b88f1b7ec87d9ea3bc0ccc1408ec798f5a
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C:\Users\Admin\AppData\Roaming\rudaoklehj.txtMD5
2e458a59025b390fbdf7d3717314b507
SHA1d5a84f501bfa81682ebde5e31a68794140141785
SHA2566b723bd260b53c68c716ef218c78718d3e99ab4d4238a4bd823fd0cd6ec8007b
SHA5122b463bc4ef98264560abad47053549c463fc9ee098c97cd60d58c959ba67f4ddf2ca60856f6564802a9f056740fbedbb6bdc829388c136c13b334563465d1f22
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memory/3568-114-0x0000000000000000-mapping.dmp
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memory/4052-116-0x0000000000000000-mapping.dmp